# WatchFit vs Subintervals

WatchFit and Subintervals both sit at 4.9 stars, but that hides the real split: 100% of Subintervals's written reviews are positive against 82% of WatchFit's. Subintervals also leads on update cadence (weekly vs every 3 weeks). WatchFit's advantage is ratings volume (34 vs 2). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. WatchFit sells 5 in-app purchases, starting at $1.99 per month and Subintervals sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for WatchFit against 5.0 for Subintervals. That said, the two scores are not equally well evidenced: WatchFit has 34 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 82% of WatchFit's written reviews are positive against 100% of Subintervals's.

WatchFit ships an update every 3 weeks, Subintervals weekly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | WatchFit | Subintervals |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (34 ratings)](https://appshunter.io/ios/app/watchfit-custom-watch-workout/id6464086175/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/subintervals/id6479748688/reviews)** |
| Number of ratings | **34** | 2 |
| Positive reviews | 81.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 17 MB | 109 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Mathieu Savaria](https://appshunter.io/developer/1530993084) | [Inaki Arroyo Nebreda](https://appshunter.io/developer/1736987639) |

## What reviewers say

### WatchFit

[App page](https://appshunter.io/ios/app/watchfit-custom-watch-workout/id6464086175)

Create and schedule custom workouts directly on your Apple Watch. Tailor intervals, warm-ups, and cool-downs with time or distance-based steps. Receive real-time alerts for pace and heart rate to optimize your training.

**Highlights:** Custom workout creation, Apple Watch integration, Interval and phase customization, Time and distance-based steps, Heart rate and pace alerts, Calendar integration, No account required

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WatchFit Premium | $1.99 | per month |
| WatchFit Premium | $9.99 | per year |
| WatchFit Premium (Special) | Free | one-time |
| WatchFit Premium (Sale) | $9.99 | one-time |
| WatchFit Premium (Lifetime) | $19.99 | one-time |


### Subintervals

[App page](https://appshunter.io/ios/app/subintervals/id6479748688)

Visualize your training data with detailed displays and interactive graphs. Customize your analysis and sync seamlessly with intervals.icu for up-to-the-minute insights into activities, events, and performance metrics.

**Highlights:** Detailed activity and event visualization, Interactive performance graphs, Seamless intervals.icu sync, Customizable data analysis, Actionable training insights

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $3.99 | one-time |
| Lunch | $11.99 | one-time |
| Big Thanks | $17.99 | one-time |
| Sponsor | $44.99 | one-time |


## Frequently asked questions

### Is WatchFit free?

WatchFit is free to download, with in-app purchases available.

### Is Subintervals free?

Subintervals is free to download, with in-app purchases available.

### Which has better reviews, WatchFit or Subintervals?

Subintervals is rated higher. WatchFit averages 4.9 out of 5 from 34 ratings, while Subintervals averages 5.0 from 2 ratings.

### Do WatchFit or Subintervals have ads?

Neither WatchFit nor Subintervals shows ads.

### Which is updated more often, WatchFit or Subintervals?

WatchFit ships an update every 3 weeks, and Subintervals weekly. Most recently, WatchFit was updated on October 25, 2026 and Subintervals on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*