Comparison

Calorie Diff vs Fuse

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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)

About

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.

Highlights
  • 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
Features
Read full description

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

Calorie Diff4 screens
Fuse4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Calorie Diff ships an update fortnightly, Fuse weekly. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Calorie Diff versus Fuse: the parameters behind the verdict, then further details
ParameterCalorie DiffFuse
PriceFree — better$1.99
Rating5.0 (2 ratings) — better—
Positive reviews—50.0% of reviews
Number of ratings2 — better—
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size28 MB18 MB
Age rating4+4+
DeveloperReme Le HaneStoprocent

Customer experience

Calorie Diff

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Fuse

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Calorie Diff

No in-app purchases

None

Fuse

No in-app purchases

Questions

Is Calorie Diff free?
Calorie Diff is free to download, with no in-app purchases.
Is Fuse free?
Fuse costs $1.99, with no in-app purchases.
Do Calorie Diff or Fuse have ads?
Neither Calorie Diff nor Fuse shows ads.
Which is updated more often, Calorie Diff or Fuse?
Calorie Diff ships an update fortnightly, and Fuse weekly. Most recently, Calorie Diff was updated on October 27, 2026 and Fuse on October 31, 2026.

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