# Stretch Timer Interval HIIT vs One Plank

The clearest difference is in-app purchases: One Plank at none against Stretch Timer Interval HIIT's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Stretch Timer Interval HIIT sells 2 in-app purchases, starting at $3.99 per month. One Plank asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Stretch Timer Interval HIIT | One Plank |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/stretch-timer-interval-hiit/id6482106910/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 259 MB | 10 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NilCraft Inc.](https://appshunter.io/developer/458823527) | [AKITO YAMAZAKI](https://appshunter.io/developer/1879795929) |

## What reviewers say

### Stretch Timer Interval HIIT

[App page](https://appshunter.io/ios/app/stretch-timer-interval-hiit/id6482106910)

This app helps you build and maintain a consistent stretching routine. Customize your workouts with adjustable sets and times, track your progress with a calendar view, and enjoy a user-friendly interface with dark mode support. It's designed to make daily stretching an effortless habit.

**Highlights:** Customizable sets and times, Multiple stretching menus, Calendar history view, Adjustable sound effects, Dark mode support, Automatic backup (premium)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $3.99 | per month |
| Premium features | $39.99 | per year |


### One Plank

[App page](https://appshunter.io/ios/app/one-plank-daily-plank-habit/id6793978852)

**In-app purchases:** none


## Frequently asked questions

### Is Stretch Timer Interval HIIT free?

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

### Is One Plank free?

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

### Do Stretch Timer Interval HIIT or One Plank have ads?

Both Stretch Timer Interval HIIT and One Plank show ads.

### Which is updated more often, Stretch Timer Interval HIIT or One Plank?

Stretch Timer Interval HIIT ships an update every 2 weeks, and One Plank every 2 weeks. Most recently, Stretch Timer Interval HIIT was updated on October 27, 2026 and One Plank on October 25, 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.*