# Interval Training Timer vs JSK Gym

The clearest difference is iOS requirement: JSK Gym at 16.4 against Interval Training Timer's 18.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Interval Training Timer ships an update every 6 weeks, JSK Gym every 3 weeks. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Interval Training Timer | JSK Gym |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 14 MB | 74 MB |
| Requires iOS | 18.5 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [clement gasner](https://appshunter.io/developer/1817607753) | [Ellions AB](https://appshunter.io/developer/1168082082) |

## What reviewers say

### Interval Training Timer

[App page](https://appshunter.io/ios/app/interval-training-timer-hiit/id6736365956)

This app helps users create and manage custom interval training sessions for various fitness activities. It offers pre-recorded workouts, audio/visual cues, and progress tracking to optimize performance and achieve fitness goals.

**Highlights:** Customizable timer settings, Pre-recorded professional workouts, Audio and visual notifications, User-friendly interface, Multilingual support, Workout statistics and progress tracking

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

**In-app purchases:** none


### JSK Gym

[App page](https://appshunter.io/ios/app/jsk-gym/id6815845396)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Training Timer free?

Interval Training Timer is free to download, with no in-app purchases.

### Is JSK Gym free?

JSK Gym is free to download, with no in-app purchases.

### Do Interval Training Timer or JSK Gym have ads?

Neither Interval Training Timer nor JSK Gym shows ads.

### Which is updated more often, Interval Training Timer or JSK Gym?

Interval Training Timer ships an update every 6 weeks, and JSK Gym every 3 weeks. Most recently, Interval Training Timer was updated on October 12, 2026 and JSK Gym 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.*