YAZIO vs Fastic 2026: Best Fasting App to Pay For
ChatGPT 
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Perplexity 
In the 2020 TREAT trial, people on a 16:8 eating window lost no more weight than people instructed to eat three structured meals a day, and neither group showed significant metabolic changes (Lowe et al., JAMA Internal Medicine, 2020). Neither arm got dietary guidance. The fasting timer is only half the equation. What fills the eating window matters just as much as when you stop eating.
As a nutritionist writing for the NutriScan team, I work with users who combine fasting with calorie awareness every day. That research result is one I see play out repeatedly: the app you use to count fasting hours matters less than whether you also track what goes into those hours.
If you search "best fasting app" in 2026, YAZIO and Fastic appear near the top of almost every list. Both support intermittent fasting. Both have millions of users. Both charge for a premium tier. But they are built for different goals, and the one you pay for should depend on what you actually want to accomplish.
TL;DR - YAZIO vs Fastic at a glance
• Best value for most people: YAZIO PRO. It publishes 12-month prices, Fastic mostly does not, and at standard pricing YAZIO is about 40% cheaper than Fastic's highest listed SKU.
• Best for fasting purists: Fastic Plus. A real-time Body Status tracker, a Protein Fasting mode, and a rewards program to stay consistent.
• Price gap: YAZIO's two 12-month SKUs are $23.90 and $47.90. Fastic's highest listed SKU is $79.99, about $56 above YAZIO's cheapest 12-month price.
• Price note: Prices are standard US prices as of mid 2026 and change by region.
• The deciding factor: What fills your eating window. The trial evidence says the timer alone moves very little.
• Free option that does both: revealed near the end. Keep reading.
IMPORTANT
Your comparison plan at a glance.
A quick roadmap so you know where this is heading.
⏱️ Progress 0/4 • ~0 minutes in • Keep going
⏳ Step 1: How the fasting timer works in each app
⏳ Step 2: Calorie and nutrition tracking head-to-head
⏳ Step 3: Pricing, wearables, community, and refunds
🔍 The free app that does both jobs at once, and the eating-window research that explains why that combo wins (revealed near the end)
Quick Verdict 🏆
| What You Need | Pick |
|---|---|
| Fasting + calorie tracking in one app | YAZIO PRO |
| Cheapest confirmed 12-month price | YAZIO PRO ($23.90) |
| Real-time body-stage tracking | Fastic Plus |
| Protein Fasting mode | Fastic Plus |
| Widest published fasting plan library | YAZIO PRO (gated behind PRO) |
| Deepest nutrient breakdown | YAZIO PRO |
| Garmin, Fitbit, Polar or Samsung Health sync | YAZIO PRO |
| No-questions refund guarantee | Fastic Plus |
| AI camera food logging | Both ship it |
Two solid apps, two different goals - the right pick depends on what you actually want to fix
Quick Comparison: YAZIO PRO vs Fastic Plus 📊
| Feature | YAZIO PRO | Fastic Plus |
|---|---|---|
| 12-month price | $23.90 and $47.90 SKUs, both labelled 12 Months | No SKU labelled 12 months; highest listed is $79.99 |
| Monthly price | $11.90 SKU, no duration label | $14.99, labelled 1 month |
| Food database | 4 million+ searchable items | Size not published |
| Fasting plans | 16:8 and 5:2 free; PRO adds 12:12, 1:1 and more | Protein Fasting is the headline; no count published |
| AI camera logging | AI food recognition, now part of PRO | Food Scanner and Restaurant Menu Scanner; advanced version in Plus |
| Nutrition detail | Macros plus fatty acids, fibre, sugar, salt, vitamins, minerals | Calories and macros |
| Barcode scanner | Free tier | Not named on either store listing |
| Recipes | 3,000+ (PRO) | 4,500+ (Plus) |
| Fasting body stages | Written guidance on ketosis and autophagy | Real-time Body Status tracker |
| Community | None in-app | AI chat free; Fasting Buddies and challenges in Plus |
| Wearable sync | Fitbit, Garmin, Polar, Samsung Health (Android only) | Google Fit and Apple Health |
| Refund policy | Deferred to Apple/Google | Feel Good Guarantee - 14 days, no conditions |
| App Store rating | 4.7/5, 50K ratings | 4.8/5, 246K ratings |
| Play rating | 4.4/5, 843K reviews | 4.4/5, 421K reviews |
| Downloads | 50M+ on Play, 100M+ people claimed | 10M+ on Play, 30M+ downloads claimed |
Prices are standard US prices as of mid 2026 and change by region. Store ratings checked 7 August 2026.
YAZIO wins on: published 12-month pricing, database size, nutrient depth, wearable coverage, and download scale.
Fastic wins on: real-time body-stage tracking, recipe volume, the Protein Fasting mode, community features, and refund protection.
Figure 1: Our own weighting of each app's strengths, scored from the feature sets both vendors publish. YAZIO stretches toward price clarity, database size, and tracker integrations. Fastic stretches toward body-stage tracking and refund protection. Both ship AI camera logging, so neither runs away with that axis.
YAZIO at a Glance
YAZIO launched as a calorie counter and added intermittent fasting features over the years. Its AI food recognition came later, free for everyone at launch and now part of YAZIO PRO. YAZIO says it is trusted by more than 100 million people; Google Play alone counts 50M+ downloads.
The free tier is usable on its own. You get a food diary, macro tracking, the full 4 million-item database, the barcode scanner, food ratings, a water tracker with reminders, and support for 16:8 and 5:2 fasting. The PRO upgrade adds:
- Over 3,000 recipes created and tested by YAZIO's nutrition experts, plus unlimited grocery lists you can build straight from a recipe
- AI food tracking via photo scan
- Smart food rating, which scores food quality beyond calories
- Detailed nutrient breakdowns covering fatty acids, fibre, sugar, salt, vitamins and minerals
- Future meal planning, a mood tracker, extended statistics, weekend calories, and a customizable diary
- All fasting plans, including 16:8, 12:12, 5:2 and 1:1
- Automatic activity sync with Fitbit, Garmin, Polar and Samsung Health (Android only)
PRO SKUs on the US App Store in 2026:
- $11.90, sold as the monthly tier, though Apple shows no duration label on it
- $23.99 for 3 months ($8.00/mo)
- $34.99 for 6 months ($5.83/mo)
- $23.90 and $47.90, both labelled 12 Months
Ten SKUs run concurrently, which means YAZIO is discounting, so treat any single figure as a snapshot. Separately, yazio.com runs a 20% discount on the 12-month plan without an influencer code, which takes the $47.90 tier to $38.32.
YAZIO is based in Erfurt, Germany. EU users get a 14-day withdrawal right on website purchases. Students get 40% off the 12-month plan through Student Beans, which brings the standard $47.90 tier down to $28.74.
Fortune's Best Intermittent Fasting Apps of 2026 roundup (updated July 29, 2026) named YAZIO "Best Intermittent Fasting App with Calorie Tracking", scored it 4/5, and said it "bridges the gap between fasting and everyday nutrition."
IMPORTANT
Checkpoint: here's where you are right now.
Quick status update so you always know the next best move.
⏱️ Progress 1/4 • ~1 minute in • Keep going
✅ Step 1: How the fasting timer works (you've seen both apps at a glance)
👉 Step 2: Calorie and nutrition tracking head-to-head (you're here)
⏳ Step 3: Pricing, wearables, community, and refunds
🧩 The free app that does both jobs (coming soon)
Fastic at a Glance
Fastic was built as a fasting app first. Its central feature is Body Status tracking, a timer that visualizes how your body responds to the fast in real time and names the phases it passes through, including fat burning and ketosis. Fastic does not publish the hour thresholds it uses for those phases.
That visual feedback is one of Fastic's strongest assets. Watching a stage flip over during a long fast pushes you to hold the window in a way a plain countdown does not.
Fastic claims over 30 million downloads across platforms; Google Play alone shows 10M+. It holds 4.8/5 from 246K App Store ratings and 4.4/5 from 421K Play reviews, both checked 7 August 2026. The free tier covers the fasting timer, a food and calorie tracker, Body Status stage tracking, water and step tracking, and an AI chat assistant called Fasty.
Fastic Plus SKUs on the US App Store in 2026:
- $14.99, labelled 1 month
- $27.99, labelled 3 months
- $12.99, $19.99, $29.99, $39.99 and $79.99, none of them carrying a duration
Ten SKUs run at once and only two say how long they last, so $79.99 is best read as the ceiling rather than a confirmed annual list price. Check the App Store for the price you are actually offered.
Plus adds 4,500+ recipes, a personalized daily plan, the Protein Fasting mode, the Fastic Academy, daily and weekly challenges, Fasting Buddies, and the advanced version of the food and menu scanners. There is also a Rewards Program that hands out 12 months of Fastic Plus free, non-renewing; Fastic's terms defer the qualifying conditions to a separate participation document.
Strong refund policy
Fastic's Feel Good Guarantee is unusually explicit. Try Plus free for 14 days, and if it is not right you get the full amount back with no deductions. You do not have to follow a plan, use the timer regularly, update your weight, or hit any result to qualify. Contact Fastic support inside the window to claim it.
Fasting Timer Experience ⏲️
The plan library goes the opposite way to what most comparisons assume. YAZIO's help centre says PRO unlocks all its fasting plans, including 16:8, 12:12, 5:2 and 1:1, with 16:8 and 5:2 available free. Fastic names Protein Fasting as its headline protocol and publishes no count of supported windows on either store listing.
Protein Fasting has research behind it. Arciero et al. in Obesity, 2023 (PMC10107279) found that fasting paired with protein pacing, four evenly spaced meals a day at 20 to 40 g of protein each, beat matched-calorie restriction on weight, total fat and visceral fat. Fastic cites this study on its own store listing. The numbers are in the research section below.
Fastic also explains the stages through its Academy content and its live Body Status view. YAZIO publishes written guidance on ketosis, autophagy and energy use, but shows no live stage visualization, and its timer stays secondary to the food log: it records the window, alerts you at each end, keeps the history.
Verdict: Fastic - for real-time stage feedback and the Protein Fasting mode. YAZIO if you want the wider plan library and are already paying for PRO.
Calorie and Nutrition Tracking 🍽️
This is where YAZIO pulls ahead, though by less than most comparisons claim. Its food database holds over 4 million searchable items, a number YAZIO states itself. Its AI food recognition lets you photograph a meal and get a calorie estimate back.
YAZIO PRO gives you:
- Full macro tracking
- Detailed nutrient breakdowns covering fatty acids, fibre, sugar, salt, vitamins and minerals
- Smart food rating that scores each food by nutritional quality
- Future meal planning, plus unlimited grocery lists you can build from a recipe
Fastic tracks calories and macros too, and it ships two AI camera features rather than none: a Food Scanner that reads a meal from a photo, and a Restaurant Menu Scanner that reads a menu and suggests dishes matching your diet. The advanced version of both sits behind Plus. What Fastic does not publish is a database size, so there is no way to compare coverage directly, and it has no equivalent to YAZIO's vitamin and mineral breakdown.
So YAZIO's edge here is depth. Fastic tells you when to eat and roughly what you ate. YAZIO tells you what you ate down to the micronutrient. For body composition goals, that detail is the part that earns its subscription. If you want to plan those macros before you even open an app, our online macro calculator gives you a starting target in under a minute.
The TREAT trial is the reason this matters. Lowe et al. randomized people to a 16:8 window or three structured meals a day, gave neither group dietary guidance, and found no significant difference in weight between them. The fasting window creates structure. What fills it decides whether results follow.
Verdict: YAZIO - for nutrient depth and database size.
IMPORTANT
Checkpoint: midway progress update.
You're halfway - the decision gets easier from here.
⏱️ Progress 2/4 • ~2 minutes in • Keep going
✅ Step 1: How the fasting timer works (done)
✅ Step 2: Calorie and nutrition tracking (done)
👉 Step 3: Pricing, wearables, community, and refunds (current)
⏳ The free app that does both jobs (next)
Community and Support 👥
Fastic is the only one of the two with a social layer. Free users get Fasty, an AI chat assistant that answers questions instantly. The human side, Fasting Buddies plus the daily and weekly challenges, sits inside Plus, alongside the Fastic Academy. The Rewards Program adds a game-like incentive on top: finish it and you get 12 months of Plus free, which keeps some users logging for months.
YAZIO has no in-app community at all. Fortune's tester scored its accountability 2 out of 5 for exactly that reason. If group motivation is what keeps you consistent, that gap is the whole decision.
Neither app advertises one-to-one human dietitian coaching. Fastic markets "expert guidance" under Plus but names no coach behind it, and both are self-serve tools in practice.
Verdict: Fastic - for any kind of built-in accountability.
Wearable and App Integrations ⌚
YAZIO PRO connects to Fitbit, Garmin, Polar and Samsung Health (Samsung Health on Android only) and pulls activities into your diary automatically. Google Fit is not on that list, despite showing up in most comparisons. Fastic names only Google Fit and the Health App, and advertises no third-party tracker support at all.
If you wear a Garmin, a Fitbit or a Polar, YAZIO is the only option of the two. For phone-level step data, both work.
Verdict: YAZIO - for wearable coverage.
Pricing Comparison 💰
Prices are standard US prices as of mid 2026 and change by region. Only SKUs whose duration the store actually states can be turned into a per-day number, so that is all this table carries:
| Plan | Listed price | Cost per day |
|---|---|---|
| YAZIO PRO, 12 months | $23.90 | $0.07/day |
| YAZIO PRO, 12 months | $47.90 | $0.13/day |
| YAZIO PRO, 6 months | $34.99 | $0.19/day |
| YAZIO PRO, 3 months | $23.99 | $0.26/day |
| YAZIO PRO, monthly | $11.90 | $0.39/day |
| Fastic Plus, 3 months | $27.99 | $0.31/day |
| Fastic Plus, 1 month | $14.99 | $0.49/day |
Figure 2: Only the SKUs whose duration the App Store states. YAZIO publishes two 12-month prices; Fastic publishes none, so its $79.99 SKU cannot be plotted as an annual cost.
At the $23.90 SKU, YAZIO costs about seven cents a day. Fastic's five unlabelled SKUs, $12.99 through $79.99, are the reason its annual cost cannot be pinned down: the widest gap you can honestly quote is about $56, between YAZIO's cheapest 12-month SKU and Fastic's highest listed price of any duration. Neither vendor advertises a family or shared plan, and both price by region. For a wider view of what every major tracker costs per year, see our best calorie tracker app to pay for in 2026 guide.
IMPORTANT
Checkpoint: final stretch before the reveal.
One last nudge - the free both-in-one option is next.
⏱️ Progress 3/4 • ~3 minutes in • Keep going
✅ Step 1: How the fasting timer works
✅ Step 2: Calorie and nutrition tracking
✅ Step 3: Pricing, wearables, community, and refunds
✨ The free app that does both jobs (about to reveal)
Who Should Choose YAZIO PRO
- You want both fasting and calorie tracking in one place. YAZIO handles both without a second app.
- You want to know what you are paying. YAZIO labels its 12-month SKUs at $23.90 and $47.90. Fastic makes you guess.
- You use Garmin, Fitbit or Polar. YAZIO's tracker integrations are broader; Fastic advertises none of these.
- You care about micronutrients. Fatty acids, fibre, sugar, salt, vitamins and minerals all show up in PRO. Fastic stops at macros.
- You eat varied meals that need a large database. With 4 million+ items, YAZIO handles restaurant meals, packaged foods, and home cooking well.
- You want the wider fasting plan library. 12:12 and 1:1 alternate-day sit inside PRO alongside 16:8 and 5:2.
- You switched from MyFitnessPal and want calorie tracking. YAZIO is the more natural replacement.
Who Should Choose Fastic Plus
- Intermittent fasting is your main focus, not calorie numbers. Fastic's Body Status view and Fasting Academy are purpose-built around the fast itself.
- You want to watch the fast happen in real time. Fastic visualizes the stages live. YAZIO writes about ketosis and autophagy but shows you nothing on the clock.
- You want a refund guarantee. The Feel Good Guarantee gives you 14 days for a full refund with no usage conditions.
- You want the Protein Fasting mode. It is Fastic's headline protocol and the only one in this comparison with a named trial behind it.
- You want structured challenges with social motivation. Fasting Buddies, the daily and weekly challenges, and the Rewards Program give you external accountability that YAZIO simply does not offer.
- You eat out often. The Restaurant Menu Scanner reads a menu photo and suggests dishes that fit your diet.
The Free App That Does Both Jobs ✨
You have been patient. Here is the part that changes the math.
The whole YAZIO-vs-Fastic debate assumes you must trade one strength for the other: pay YAZIO for the nutrient depth and lose the live fasting feedback, or pay Fastic for the fast and stop at macros. The TREAT trial is the reason that trade-off matters, because a fasting window on its own moved almost nothing. So the app worth having is the one that covers both sides without making you choose.
That is exactly the gap NutriScan was built to close, and the core of it is free.
What NutriScan combines in one free app
- Intermittent fasting tab with a ring timer and the same protocols both rivals charge for: 14:10, 16:8, 18:6, 20:4, and custom (1-23h). Start and end a fast manually, edit times retroactively within 7 days, and keep a streak when you hit at least 80% of your target.
- AI photo meal scan - point your camera at the plate and get a calorie and macro estimate. Five free scans a week, which is enough to test the scanner on the meals that usually break a food database: your curries, your restaurant plates, your mixed bowls.
- NutriScore quality rating on every meal, so you can see whether your eating window is actually nutritious, not just calorie-controlled.
- NutriBites - ask plain-language questions about your own meal and fasting history and get correlations back (for example, how your fasting days line up with your NutriScore).
Here is the fasting and meal flow inside the app:
NutriScan meal scan - Home > Camera Icon > Crop Picture. Snap the plate, confirm the crop, and the app estimates calories and macros for the eating window.
NutriScan home dashboard - the daily breakdown that tells you what filled your eating window, not just when it opened and closed.
This is the piece the TREAT trial says decides results: a fasting timer keeps the structure, and the photo log plus NutriScore keep the eating window honest. You get the fasting side that makes Fastic appealing and the tracking side that makes YAZIO appealing, in one app, starting at $0.
That moment you realize you do not have to pay two subscriptions to cover both halves of the equation
What Research Says About Fasting and Tracking 🔬
Intermittent fasting has a real evidence base. Varady et al. reviewed it in Cardiometabolic Benefits of Intermittent Fasting, Annual Review of Nutrition, 2021: every form covered, alternate-day fasting, 5:2 and time-restricted eating, produced mild to moderate weight loss of 1 to 8% from baseline and consistent reductions in energy intake of 10 to 30%. The review reports possible cardiometabolic benefits through lower blood pressure, insulin resistance and oxidative stress. It is a narrative review, not a pooled trial count.
The limits are documented just as clearly. In the TREAT trial (Lowe et al., JAMA Internal Medicine, 2020) the 16:8 group lost 0.94 kg over 12 weeks, a small within-group drop, but the difference against the group eating three structured meals a day was not significant, and neither group showed meaningful metabolic change. The trial gave no dietary guidance to either arm, which is roughly what using a fasting app and ignoring the food log looks like.
Protein during the eating window is the other lever. Arciero et al. (Obesity, 2023) paired intermittent fasting with four evenly spaced 20 to 40 g protein meals and beat matched-calorie continuous restriction on weight (-9% vs -5%), total fat (-16% vs -9%), visceral fat (-33% vs -14%) and fat-free mass percentage (6% vs 3%). The eating window has to be nutritionally purposeful, not just calorie-controlled, which is why protein tracking and a food-quality score matter more than the timer itself.
6 Practical Tips for Choosing and Using Either App 💡
- Test the free tier for 7 days before paying. Both YAZIO and Fastic have usable free plans. Track how often you open each app daily. Frequency of use predicts whether the paid version will stick.
- Always choose annual over monthly. YAZIO's $11.90 SKU works out to $142.80 over 12 months against $47.90 for the standard 12-month plan, roughly 3x more. Apple does not label the $11.90 tier with a duration, so confirm it at checkout. The same logic applies to Fastic's $14.99 one-month SKU.
- Compare both YAZIO checkouts. Both the $23.90 and the $47.90 12-month SKUs appear on the App Store listing, and yazio.com separately runs a 20% off code for the 12-month plan. Check both before paying.
- Claim Fastic's Feel Good Guarantee before day 14. Contact Fastic support inside the 14-day window for the full amount back. You do not need to have used the app in any particular way.
- Pair both apps if you are serious about results. Some users run YAZIO for the food log and Fastic for the fasting timer and education. Expect roughly $65 to $130 a year for both, depending on which Fastic SKU you land on, or skip the math and use one free app that covers both.
- Build a 14-day logging streak from day one. Set a daily reminder and treat the first two weeks as the stretch where the habit either sticks or does not.
Step-by-Step: How to Pick Between Them 🧭
- Decide what matters more - the fast or the food. Live body stages, the Academy, Protein Fasting: start with Fastic. Nutrient depth, database size, wearables: start with YAZIO.
- Check live pricing for your region. Both vendors run several SKUs at once and price by region. Do not assume the figures above are what you will be shown.
- Check which trackers you use. Garmin, Fitbit or Polar: only YAZIO works. Phone step data: both work.
- Try the free tier for a week. Open the app at least twice daily and notice whether the fasting timer actually changes your behavior.
- If you like Fastic, buy the one-month SKU first. At $14.99 it is a low-cost way to test the Academy and the Plus features before you commit to anything longer.
IMPORTANT
Recap: everything you covered this round.
You finished the run - save this for your next subscription decision.
⏱️ Progress 4/4 • ~4 minutes in • Nicely done
✅ Step 1: How the fasting timer works
✅ Step 2: Calorie and nutrition tracking
✅ Step 3: Pricing, wearables, community, and refunds
✅ The free app that does both jobs (revealed - NutriScan)
Conclusion
YAZIO PRO is the better choice for most people in 2026. Its 12-month SKUs are the cheapest confirmed annual prices in this comparison, it tracks fasting and food in one place, it goes deeper on nutrients than anything Fastic publishes, and it connects to more trackers. At $23.90 to $47.90 for 12 months, it is roughly 40% cheaper than Fastic's highest listed SKU at standard pricing.
Fastic Plus earns its price for people who treat intermittent fasting as the practice rather than a calorie-cutting trick. The live Body Status view, the Academy, Protein Fasting, Fasting Buddies and the 14-day Feel Good Guarantee all give committed fasters something YAZIO has no answer to.
But the trials are consistent: a fasting window on its own moves very little. If you want the full picture, meals, fasting windows, and what actually goes into the eating window, NutriScan pairs a free fasting timer with AI photo scanning and a NutriScore on every meal. The timer, NutriScore, micronutrients and meal history are free, and the scanner gives you five scans a week to test it before you pay for anything.
Frequently Asked Questions ❓
Q: Is YAZIO PRO better than Fastic Plus for weight loss?
A: For most users, yes. In the 2020 TREAT trial, people on a 16:8 window lost no more weight than people eating three structured meals a day, and neither arm got dietary guidance. YAZIO PRO gives the deeper nutrition picture, with fatty acids, fibre, sugar, salt, vitamins and minerals alongside macros. Fastic tracks calories and macros too, so the difference is depth, not presence.
Q: What is the main difference between YAZIO and Fastic?
A: YAZIO is primarily a calorie tracking app with fasting features, a 4 million-plus item food database and AI food recognition. Fastic is primarily a fasting app that also tracks calories and macros, ships a Food Scanner and a Restaurant Menu Scanner, and shows a real-time Body Status view of stages like fat burn and ketosis. YAZIO's 12-month SKUs run $23.90 to $47.90; Fastic's highest listed SKU is $79.99.
Q: Does YAZIO have a free trial?
A: Yes, a 7-day free PRO trial, but YAZIO offers it only occasionally and only through yazio.com. You cannot start it inside the app. The free tier stands on its own anyway: food diary, macro tracking, the 4 million-item database, the barcode scanner, food ratings, a water log, and 16:8 and 5:2 fasting support.
Q: Can I use YAZIO and Fastic together?
A: Yes. Some users run Fastic as their fasting timer and education layer while using YAZIO for the food log. Both connect to your phone's health platform, so step and activity data overlaps without conflict. Expect roughly $65 to $130 a year for both, depending on which Fastic SKU you land on, or use one free app that covers both.
Q: Is Fastic safe for long-term use?
A: Fastic is safe for healthy adults. It is developed by Fastic GmbH in Berlin, Germany, and follows German consumer protection standards including EU 14-day withdrawal rights. Apple's listing still shows the legacy HealthVida name, but the copyright line on that same page already reads Fastic GmbH. As with any dietary change, consult your doctor before starting intermittent fasting if you have a chronic condition, take regular medications, or are pregnant or breastfeeding.