App Review
Lifesum Review
Fuel Nutrition Team • March 1, 2026
Our Rating
Below Average4/ 10
0510
Pain points
| Pain point | What shows up in iOS reviews |
|---|---|
| AI pivot perceived as regression | Users describe the update as "fixing something that wasn't broken" — less accurate, less personal, and harder to trust than what came before. |
| Meal structure and per-meal calories disappeared | The old meal-slot structure was replaced by a flat list; meals get mis-assigned and per-meal calorie breakdowns are gone. |
| AI logging accuracy and correctability problems | Text tracking is reported as "not always accurate," and the ability to adjust and verify individual entries was removed in the update. |
| Feature instability across updates | Multiple reviews report the AI food tracker breaking entirely after updates, or reverting to old behavior without explanation. |
| Food entry failures for paid users | Paying subscribers report being unable to add foods or create private diet menu items — directly undermining the calorie math they're paying for. |
| Free tier feels like a locked demo | Recipes, diet plans, and meaningful personalization sit behind subscription, leaving free users with little more than a basic calorie counter. |
Lifesum's trajectory is genuinely unusual in the app space: a company took a product its most engaged users found valuable and deliberately replaced the part they valued most.
The AI logging pivot wasn't a feature addition on top of the existing structured meal-entry flow — it replaced it. What users had organized their nutrition habits around — meal slots, per-meal calorie visibility, the ability to find and verify each entry — was swapped for a text-input interface that reviews describe as less accurate and without the correction workflows that made the old version trustworthy. The result is a product that now serves its marketing sheet better than it serves the daily logging needs of real users.
Fuel treats the AI and the control layer as inseparable by design. The AI speeds up logging — photo, text, or voice — but the output is never locked in: you correct, refine, and guide the result with natural language until it accurately reflects what you ate. Meal structure and per-meal calorie visibility are clear in the daily view. The live health score gives you five-dimensional pacing at a glance (calories, macro quality, micronutrients, limits, movement), the morning recap tells you how yesterday landed, and the weekly review with an explicit action plan tells you what to adjust next week. The free tier — one full week of AI coaching, daily and weekly reviews, a preview of plan progress — demonstrates the whole system live rather than showing you what's locked.
Verdict
Lifesum broke the UX that made it useful and hasn't reliably fixed it. If you want AI logging that's genuinely correctable — with meal structure preserved and a coaching loop that doesn't regress between updates — Fuel is what Lifesum was trying to become.