# RhythmFit Timer vs HIIT Trainer

The clearest difference is update cadence: HIIT Trainer at every 2 days against RhythmFit Timer's weekly. HIIT Trainer also leads on iOS requirement (16.0 vs 18.4). On price, ads, in-app purchases and device support there is nothing between them.

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

RhythmFit Timer ships an update weekly, HIIT Trainer every 2 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | RhythmFit Timer | HIIT Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Size | 2 MB | 14 MB |
| Requires iOS | 18.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Jian Kai Wang](https://appshunter.io/developer/1809893436) | [巧 唐](https://appshunter.io/developer/6790363579) |

## What reviewers say

### RhythmFit Timer

[App page](https://appshunter.io/ios/app/rhythmfit-timer/id6744947444)

**Features:** macOS Compatibility

**In-app purchases:** none


### HIIT Trainer

[App page](https://appshunter.io/ios/app/hiit-trainer-interval-timer/id6790511820)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RhythmFit Timer free?

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

### Is HIIT Trainer free?

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

### Do RhythmFit Timer or HIIT Trainer have ads?

Neither RhythmFit Timer nor HIIT Trainer shows ads.

### Which is updated more often, RhythmFit Timer or HIIT Trainer?

RhythmFit Timer ships an update weekly, and HIIT Trainer every 2 days. Most recently, RhythmFit Timer was updated on November 8, 2026 and HIIT Trainer on November 5, 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.*