App Review
YAZIO Review
Fuel Nutrition Team • March 1, 2026
Our Rating
Below Average4/ 10
0510
Pain points
| Pain point | What shows up in iOS reviews |
|---|---|
| Nutrition values don't match package labels | Users report calorie and macro data from the database diverging meaningfully from what's printed on the package. |
| Unhelpful errors when adding new foods | Attempting to log a custom food triggers "data doesn't add up" messages with no actionable guidance — blocking the entry entirely. |
| Calendar breaks after updates | Multiple reviews report the history calendar stopping work after updates, making it impossible to review prior days until a patch arrives. |
| Duplicate and phantom food entries | Users report food entries appearing multiple times after logging once, with totals showing significantly over target for no apparent reason. |
| Gamification that doesn't function as described | "Diamond chest" rewards either don't trigger or trigger on conditions users can't reconcile with the stated rules. |
| Subscription auto-renew surprises | Users report being charged after forgetting to cancel trials; key features including the camera logging function have moved behind Pro. |
| Cross-device data loss | Switching to a new phone causes recipe and logging history to fail to load, with no clear recovery path provided. |
YAZIO is one of the most visually polished nutrition trackers in the App Store — clean type, smooth transitions, an "AI" badge on everything, an interface that looks like it belongs in a design portfolio. The frustration is that the data underneath that surface is less reliable than the design implies. Nutrition values don't match package labels. Custom food entries hit vague errors that can't be resolved. Post-update, the calendar breaks and you can't review your own history. Phantom entries inflate your totals overnight. Switch phones, and your history may simply not load. In a category where the entire value proposition is "trust the numbers," these aren't cosmetic problems.
Fuel makes Apple Health the backbone of your data rather than a proprietary backend that can drop it. Everything Fuel writes — food, nutrients, liquids, even workouts — goes into Apple Health, so your history travels with your phone, your data doesn't vanish between app updates, and you're never dependent on YAZIO's servers for continuity. The AI logger is tested for accuracy against competitors, and when something's wrong you correct it in natural language — no cryptic dead-end error. The daily health score gives you real-time pacing; there's no gamified chest reward logic to decode. And the free tier is transparent: one full week of AI coaching, daily and weekly reviews, and a clear preview of what Pro unlocks — no auto-renew surprise after a feature demo.
Verdict
YAZIO looks the part but fails where it counts — data accuracy, reliability after updates, and cross-device continuity. Fuel uses Apple Health as the source of truth so your data is stable, portable, and auditable — not held hostage by a proprietary backend that drops it on a phone switch.