# Interval Timer One vs Simple HIIT

The clearest difference is update cadence: Interval Timer One at every 2 months against Simple HIIT's every 31 months. 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.

Interval Timer One ships an update every 2 months, Simple HIIT every 31 months. Both last shipped on October 1, 2026.

## The numbers

| Metric | Interval Timer One | Simple HIIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/interval-timer-one/id6449265364/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 31 months |
| Monetization | Free | — |
| Size | 2 MB | 2 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [jun hyun](https://appshunter.io/developer/1688453095) | [Beesoft Apps](https://appshunter.io/developer/1420966143) |

## What reviewers say

### Interval Timer One

[App page](https://appshunter.io/ios/app/interval-timer-one/id6449265364)

This user-friendly interval timer app simplifies fitness routines by allowing effortless customization of workout durations. It offers intuitive controls for setting intervals, pausing, resuming, and adjusting the timer, ensuring a focused and efficient training experience without unnecessary features.

**Highlights:** Intuitive interval customization, Pause and resume functionality, Adjust timer forward/backward, Uninterrupted timer operation, Plays music without disruption

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple HIIT

[App page](https://appshunter.io/ios/app/simple-hiit-interval-timer/id6449968373)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer One free?

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

### Is Simple HIIT free?

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

### Do Interval Timer One or Simple HIIT have ads?

Neither Interval Timer One nor Simple HIIT shows ads.

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

Interval Timer One ships an update every 2 months, and Simple HIIT every 31 months. Most recently, Interval Timer One was updated on October 1, 2026 and Simple HIIT on October 1, 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.*