Calorie Diff vs Fuse
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calorie Diff
Easily track your daily calorie balance by viewing active, rest, and dietary intake. See your surplus or deficit at a glance, with optional macro tracking and historical data for the past month.
- Calorie surplus/deficit visualization
- Active, Rest, and Dietary calorie tracking
- Optional macro tracking (Carbs, Fats, Protein)
- 7, 14, and 30-day calorie history
- Apple Health integration
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This app is for users like me who want a quick glance at their daily calories. We have many nutrition apps out there, but not all of them display the complete picture, I wanted to easily be able to see whether or not I was sitting in a surplus or a deficit depending on my current training/nutrition goals. My preferred nutrition app only pulls in exercises, ignoring rest and general active calories, only giving part of the picture. This app simply pulls in the Active, Rest and Dietary calories from Apple Health and displays the combined Burned Calories, Consumed Calories and the difference between them. We optionally also display the 3 macros, Carbs, Fats and Protein, this can be enabled in the settings tab, where you will also need to set your goal values per day. On the history tab, you are able to view a list of your calories over the last 7, 14 and 30 days. --------------- Requirements --------------- This app requires that the device has the Apple Health app installed and access to the following permissions: - Active Energy - Resting Energy - Dietary energy Optionally, for those who also wish to view their Macros within the app, we would need the following permissions: - Carbohydrates - Protein - Total Fats ---------------------- Supported languages ---------------------- English German Spanish Hindi Arabic Portuguese French Russian Japanese Korean Malay Vietnamese Turkish Tamil Italian Polish Ukrainian Romanian Dutch Thai Hungarian Czech Swedish Hebrew Slovak Danish Finnish Norwegian Chinese (Simplified)
Fuse
Easily manage your workout data by merging split sessions, trimming unwanted parts, and fixing GPS gaps. You can also change activity types and export your data for other platforms.
- Merge multiple workouts
- Trim workout duration
- Fix GPS gaps by drawing
- Change activity type
- Preview workout details
- Export workouts (FIT/GPX)
- Upload to Strava/Intervals.icu
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Fuse helps you take control of your Apple Health workouts. If a workout gets split mid-session, Fuse lets you merge multiple recordings into one complete activity. If a session includes extra time you don't want, trim it down and save a cleaner version back to Apple Health. Lost GPS signal mid-workout? Draw the missing part of your route on the map and Fuse rebuilds it, distance included. Saved a session as the wrong activity type? Change it in a couple of taps — your route, heart rate, and metrics stay intact. Before making any changes, you can review full workout details — including route data, heart rate, duration, distance, energy, laps, and segments. With Fuse, you can: - Merge multiple Apple Health workouts into a single activity - Trim a workout to keep only the section you want - Fix GPS gaps by drawing the missing route directly on the map - Change a workout's activity type (for example, Indoor Walk to Outdoor Walk) - Preview workouts and see gaps before confirming a merge - Choose whether to keep or remove originals after merging - Upload workouts directly to Strava or Intervals.icu - Export workouts as FIT or GPX files - Browse and filter your workout history by activity type - View full workout details with maps, heart rate charts, and key metrics Fuse is built for athletes who want cleaner records, better exports, and full control over their training data — without unnecessary complexity. Whether you're fixing auto-split sessions, repairing GPS gaps, cleaning up imported workouts, or preparing files for other platforms, Fuse makes your Apple Health workout history easier to manage.
Screenshots
Verdict
The clearest difference is price: Calorie Diff at Free against Fuse's $1.99. Calorie Diff also leads on iOS requirement (13.0 vs 17.0). Fuse's advantage is update cadence (weekly vs fortnightly). On 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
Calorie Diff is free to download; Fuse costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calorie Diff ships an update fortnightly, Fuse weekly. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.
| Parameter | Calorie Diff | Fuse |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Reme Le Hane | Stoprocent |
Customer experience
Calorie Diff
Fuse
In-app purchases
Calorie Diff
No in-app purchases
Fuse
No in-app purchases









