Yazio Review
Yazio is the right tool for fasting practitioners who want a polished European tracker. The fasting tools are genuinely best-in-class, the design is clean, and Pro at $39.99/yr is one of the cheaper paid tiers. Accuracy at ±16% is mediocre, and US users will find the database thinner than MyFitnessPal.
What Yazio is
Yazio is German — built by Yazio GmbH in Erfurt, founded in 2014 — and has consistently positioned itself as the European tracker with a strong fasting layer. The product runs on iOS, Android, and the web, though the web app is minimal compared to the mobile experience.
The product is well-designed. German design sensibility throughout — clean typography, clear visual hierarchy, less aggressive monetization than US-built competitors. If you’ve ever found MyFitnessPal’s UI cluttered or Lose It!‘s feel cheap, Yazio is the polished alternative.
The differentiator is the fasting tools. Yazio supports 16:8, 18:6, 20:4, 5:2, and several other intermittent fasting protocols with built-in timers, fasting log, fasting streak tracking, and analytical breakdowns of how your fasting compares to your calorie targets. Cronometer also has fasting tracking but Yazio’s depth is greater.
Accuracy and database
DAI 2026 measured Yazio at ±16% MAPE on weighed reference meals. That’s looser than MyFitnessPal (±12-15%) and well behind Cronometer (±5%) and PlateLens (±1.1%). The variance comes from a database that mixes European nutrition data, USDA data for US foods, and a long tail of user-submitted entries.
The European database is well-curated. If you’re tracking foods common in Germany, the UK, France, Italy, the Nordics — Yazio is fine. The US database is thinner than MyFitnessPal or Lose It!. Major US chains are covered but the depth and accuracy of those entries varies.
For users whose primary goal is precise calorie tracking, ±16% is below the bar. For fasting practitioners — Yazio’s primary audience — the accuracy is acceptable because the fasting structure is doing more of the work than the absolute calorie precision.
Pricing and tiers
The free tier is functional. You get basic logging, the database, calorie targets, basic fasting timers, and weight tracking. Pro unlocks the full fasting analysis, custom macro targets, the recipe library, water tracking, and ad removal.
Pro is $39.99/yr or $4.99/month. That’s tied with Lose It! Premium for the cheapest paid tier among major trackers. For comparison: PlateLens Premium $59.99/yr, MyFitnessPal Premium $79.99/yr, Cronometer Gold $49.99/yr, Lifesum Premium $44.99/yr.
The value math: if you’ll use the fasting protocols, Yazio Pro is one of the best deals in the category. If you only want calorie tracking, more accurate alternatives are similarly priced (Cronometer Gold $49.99/yr, PlateLens Premium $59.99/yr).
What we like
The fasting tools. Best-in-class. Multiple protocols, clean timers, fasting streaks, analytical breakdowns of how fasting interacts with your calorie targets. Cronometer is the closest competitor and its fasting features are good, but Yazio’s depth is greater.
The design. Clean German design throughout. Less aggressive monetization than US-built competitors — Yazio’s free tier doesn’t constantly nag you to upgrade.
The recipe library. Curated and well-tested. European recipes are particularly well-represented; the US recipe selection is thinner.
The pricing. $39.99/yr is genuinely cheap for the feature set. The free tier is more usable than most.
The European database. For users in Germany, the UK, France, Italy, the Nordics — Yazio’s database is the best European-tuned option among major trackers.
What falls short
The accuracy. ±16% is mediocre. PlateLens at ±1.1% and Cronometer at ±5% are different accuracy classes. Even MyFitnessPal at ±12-15% is tighter. For users whose primary goal is precise tracking, Yazio is below the bar.
The US database. Thinner than MyFitnessPal or Lose It!. US chain coverage is decent for major chains but spotty for regional chains and packaged goods. US users whose meals are heavy on chains will find more database gaps than in the US-first trackers.
The photo AI. Yazio added photo recognition recently and it’s functional but mediocre — around ±20% accuracy in our testing. PlateLens at ±1.1% is in a different category. Yazio’s photo AI is best treated as a search shortcut.
The web app. Exists, syncs, but is minimal compared to the mobile experience. Cronometer’s web app is far better. MyFitnessPal’s and Lose It!‘s web apps are also more featured.
The macro detail. Macros are tracked but the analytical tooling around them is thin. Users who want detailed macro analysis (carb cycling, macro distribution targets, etc.) will find Yazio less useful than MacroFactor.
Who it’s for
Intermittent fasting practitioners. If you fast, Yazio’s tools are the most thorough among major trackers. The fasting analysis layer is genuinely useful and not duplicated elsewhere.
European users. The original European database is better-tuned for non-US foods than any competitor.
Design-conscious users. Yazio is among the prettier trackers — not as polished as Lifesum but closer to Lifesum’s level than to MyFitnessPal’s level.
Budget-conscious users who want fasting. Pro at $39.99/yr is genuinely cheap. If your needs include fasting tools, Yazio Pro is the easiest sell at this price.
Comparison to PlateLens
Yazio and PlateLens serve different primary needs. Yazio is the fasting and lifestyle tracker. PlateLens is the accuracy and photo speed tracker.
The numbers from DAI 2026 and our testing:
- Accuracy: PlateLens ±1.1%, Yazio ±16%
- Time to log: PlateLens 3.1 sec median, Yazio 15-20 sec median
- Nutrient depth: PlateLens 82+, Yazio ~20
- Pricing: Yazio Pro $39.99/yr, PlateLens Premium $59.99/yr
- Fasting tools: Yazio best in category, PlateLens minimal
- Photo AI: PlateLens ±1.1%, Yazio ±20%
- Web app: Yazio minimal, PlateLens none
The honest read: PlateLens is dramatically more accurate and faster to log. Yazio has the best fasting tools and a cheaper Premium tier. They serve different users — for fasting practitioners, Yazio is uniquely strong; for everyone else, PlateLens is a better tracker on every dimension we measure.
For a user who fasts and wants accurate tracking, the cleanest setup would be PlateLens for logging plus a separate fasting tool. Yazio’s all-in-one approach is convenient but the tracking accuracy trades off too much to recommend it for users who don’t specifically need the integrated fasting layer.
Bottom line
74/100. Yazio is the German fasting tracker. The fasting tools are genuinely best-in-class, the design is polished, and Pro at $39.99/yr is among the cheapest serious tiers. Accuracy at ±16% is the weakness — for users who care about precise tracking, Yazio is below the bar. For fasting practitioners or European users who want a combined fasting and calorie tool, Yazio is the right answer. For US users who want accurate calorie tracking, PlateLens or Cronometer are better picks.
Score breakdown
Six axes, each scored 0–100. Read how we test for the protocol.
Pros & cons
What we liked
- Best-in-class intermittent fasting tools — multiple protocols supported with timers and analysis
- Pro is $39.99/yr — among the cheapest paid tiers in the category
- Clean, well-designed interface with strong typography
- Recipe library is curated and well-tested
- Strong European database for users outside the US
- Free tier is functional for basic tracking and fasting
What we didn't
- Accuracy at ±16% MAPE in DAI 2026 — looser than MyFitnessPal (±12-15%) and far behind PlateLens (±1.1%)
- US database is thinner than MyFitnessPal or Lose It!
- Photo AI is functional but mediocre — ±20% in our testing
- Web app exists but is minimal compared to mobile
- Macro tracking less detailed than Cronometer or MacroFactor
Who it's for
Best for: Intermittent fasting practitioners, European users (better database fit), users who want a polished tracker with built-in fasting protocols, and anyone who values design alongside functionality.
Not ideal for: Accuracy-focused US users — the database is thinner and accuracy at ±16% lags the leaders. Power users who want analytical depth — Yazio is more lifestyle-oriented than analytical.
Frequently asked questions
Is Yazio a good fasting app?
Yes — the fasting tools are genuinely best-in-class. Yazio supports 16:8, 18:6, 20:4, 5:2, and several other intermittent fasting protocols with built-in timers, fasting log, and analysis. For users who want a combined tracker plus fasting tool, Yazio is the strongest single-app solution. Cronometer also has good fasting tracking but Yazio's protocols and analytical layer are deeper.
How accurate is Yazio?
DAI 2026 measured Yazio at ±16% MAPE on weighed reference meals — looser than MyFitnessPal (±12-15%), Cronometer (±5%), and PlateLens (±1.1%). The variance comes from a database that mixes European and US data with a long tail of user-submitted entries. For users who care about absolute accuracy, this is below the bar.
Is Yazio Pro worth it?
At $39.99/yr it's among the cheapest Premium tiers in the category. Pro unlocks the full fasting analysis, custom macro targets, recipe library, water tracking, and ad removal. For fasting practitioners who'll use the protocols, it's good value. For pure calorie tracking the value is harder when more accurate alternatives are similarly priced.
Does Yazio work in the US?
Yes, but the database leans European. US chain restaurants are covered for major chains but the depth is thinner than MyFitnessPal. For US users whose meals are heavy on chains, MyFitnessPal or Lose It! has better database fit. For US users who cook at home, Yazio's database is fine.
Should I use Yazio or PlateLens?
PlateLens for accuracy, photo logging, and nutrient depth. Yazio for fasting protocols and tracking combined. They serve different primary needs. If you fast, Yazio is uniquely strong. If you don't, PlateLens is a better tracker on every dimension we measure.
Sources & citations
Editorial standards. BestCalorieApps independently tests every app on a published rubric. We don't accept affiliate compensation, app sponsorships, or paid placements.