Fat vs iBurndownChart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fat
This app helps manage your health by tracking physical activity and nutrition. It monitors calorie burn, displays activity history, and allows manual input of various health metrics.
- Calorie combustion monitoring
- Basal metabolism tracking
- Activity calendar (3 months)
- Nutrition and body measurement logging
- Calorie balance management
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It is an application integrated into iPhone's health care. This application manages health by referring to health data measured by iPhone and entering health data. · Combustion monitor Browse iPhone walking + run distance and show calories burned together with basal metabolism. Also, add information on energy intake and manage the calorie balance for each time zone. · Active calendar Display activity, nutrition, physical measurement, unhealthy information for 3 months. · Input information Calorie intake, moisture, body weight (BMI), body fat percentage, tobacco, alcohol.
iBurndownChart
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With the help of iBurndown you can systematically lose weight and record your body weight, muscle mass and body fat percentage. The weight is displayed in a burndown chart. The actual course of the weight can be compared with a straight line of constant weight loss rate. The entries are synchronized between devices via iCloud. You also have the option of calculating body mass index (BMI) and basal metabolic rate (BMR) in a fitness view and displaying information on these parameters. The app also calculates the date when you can reach the goal based on the targeted weight loss speed.
Screenshots
Verdict
The clearest difference is update cadence: iBurndownChart at daily against Fat's every 7 months. Fat's advantage is iOS requirement (10.2 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Fat ships an update every 7 months, iBurndownChart daily. The most recent releases landed on September 29, 2026 and September 14, 2026 respectively.
| Parameter | Fat | iBurndownChart |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.2 — better | 16.0 |
| Further details — not scored | ||
| Size | 18 MB | 5 MB |
| Age rating | 12+ | 4+ |
| Developer | MAKOTO SASAKI | Martin Leonard Haufs |
In-app purchases
Fat
No in-app purchases
iBurndownChart
No in-app purchases









