# InterFit vs HIIT Interval Timer & Tracker

The clearest difference is in-app purchases: InterFit at none against HIIT Interval Timer & Tracker's 4. HIIT Interval Timer & Tracker's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (12.0 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. HIIT Interval Timer & Tracker sells 4 in-app purchases, starting at $1.99 per 7 days. InterFit asks for nothing beyond the download.

InterFit ships an update every 2 months, HIIT Interval Timer & Tracker every 3 weeks. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | InterFit | HIIT Interval Timer & Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 4 MB | 57 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EUNHWAN LEE](https://appshunter.io/developer/1720138693) | [Ech-Chafai Kadri](https://appshunter.io/developer/1789520174) |

## What reviewers say

### InterFit

[App page](https://appshunter.io/ios/app/interfit/id6741092302)

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

**In-app purchases:** none


### HIIT Interval Timer & Tracker

[App page](https://appshunter.io/ios/app/hiit-interval-timer-and-tracker/id6742692409)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $1.99 | per 7 days |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $19.99 | per year |
| Pro Access | $19.99 | one-time |


## Frequently asked questions

### Is InterFit free?

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

### Is HIIT Interval Timer & Tracker free?

HIIT Interval Timer & Tracker is free to download, with in-app purchases available.

### Do InterFit or HIIT Interval Timer & Tracker have ads?

Neither InterFit nor HIIT Interval Timer & Tracker shows ads.

### Which is updated more often, InterFit or HIIT Interval Timer & Tracker?

InterFit ships an update every 2 months, and HIIT Interval Timer & Tracker every 3 weeks. Most recently, InterFit was updated on September 17, 2026 and HIIT Interval Timer & Tracker on September 10, 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.*