# KEEP PLANK vs HIIT Timer

The clearest difference is in-app purchases: KEEP PLANK at none against HIIT Timer's 3. KEEP PLANK also leads on update cadence (daily vs every 3 months) and iOS requirement (16.0 vs 18.2). HIIT Timer's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. HIIT Timer sells 3 in-app purchases, starting at $0.49 per month. KEEP PLANK asks for nothing beyond the download.

KEEP PLANK ships an update daily, HIIT Timer every 3 months. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | KEEP PLANK | HIIT Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 3 months |
| Size | 20 MB | 21 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tatsuyuki shibuya](https://appshunter.io/developer/1639823174) | [KAZUNORI WAKAMATSU](https://appshunter.io/developer/1721880240) |

## What reviewers say

### KEEP PLANK

[App page](https://appshunter.io/ios/app/keep-plank/id6670267717)

**Features:** macOS Compatibility

**In-app purchases:** none


### HIIT Timer

[App page](https://appshunter.io/ios/app/hiit-timer-workout-and-tabata/id6749171654)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium plan (1 month) | $0.49 | per month |
| Premium plan (annual) | $5.99 | per year |
| PremiumPlan(one-time purchase) | $14.99 | one-time |


## Frequently asked questions

### Is KEEP PLANK free?

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

### Is HIIT Timer free?

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

### Do KEEP PLANK or HIIT Timer have ads?

KEEP PLANK shows ads; HIIT Timer does not.

### Which is updated more often, KEEP PLANK or HIIT Timer?

KEEP PLANK ships an update daily, and HIIT Timer every 3 months. Most recently, KEEP PLANK was updated on October 6, 2026 and HIIT Timer on October 14, 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.*