# Lets HIIT vs Gym Timer Pro

The clearest difference is in-app purchases: Gym Timer Pro at none against Lets HIIT's 2. Gym Timer Pro also leads on ads (none vs shown). Lets HIIT's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Lets HIIT sells 2 in-app purchases, starting at $2.49 per month. Gym Timer Pro asks for nothing beyond the download.

Lets HIIT ships an update monthly, Gym Timer Pro every 3 weeks. The most recent releases landed on October 19, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Lets HIIT | Gym Timer Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 35 MB | 2 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BTS Software Development Company Limited](https://appshunter.io/developer/1754895889) | [stefen manage](https://appshunter.io/developer/6780220941) |

## What reviewers say

### Lets HIIT

[App page](https://appshunter.io/ios/app/lets-hiit-tabata-timer/id6505046723)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free Monthly | $2.49 | per month |
| Ad-free Annual | $12.99 | per year |


### Gym Timer Pro

[App page](https://appshunter.io/ios/app/gym-timer-pro-interval-hiit/id6783197889)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lets HIIT free?

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

### Is Gym Timer Pro free?

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

### Do Lets HIIT or Gym Timer Pro have ads?

Lets HIIT shows ads; Gym Timer Pro does not.

### Which is updated more often, Lets HIIT or Gym Timer Pro?

Lets HIIT ships an update monthly, and Gym Timer Pro every 3 weeks. Most recently, Lets HIIT was updated on October 19, 2026 and Gym Timer Pro on October 28, 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.*