# Interval Timer HIIT Timer ++ vs Simple Timer

The clearest difference is in-app purchases: Simple Timer at none against Interval Timer HIIT Timer ++'s 1. Simple Timer also leads on ads (none vs shown). Interval Timer HIIT Timer ++'s advantage is update cadence (every 6 days vs every 4 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Interval Timer HIIT Timer ++ sells 1 in-app purchase, starting at $1.99 per 7 days. Simple Timer asks for nothing beyond the download.

Interval Timer HIIT Timer ++ ships an update every 6 days, Simple Timer every 4 weeks. The most recent releases landed on June 11, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | Interval Timer HIIT Timer ++ | Simple Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 4 weeks |
| Size | 6 MB | 24 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Appwallet Technologies Private Limited](https://appshunter.io/developer/1581780855) | [Hyoungil Kim](https://appshunter.io/developer/1694504430) |

## What reviewers say

### Interval Timer HIIT Timer ++

[App page](https://appshunter.io/ios/app/interval-timer-hiit-timer-plus-plus/id6737910658)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HIIT | $1.99 | per 7 days |


### Simple Timer

[App page](https://appshunter.io/ios/app/simple-timer-hiit-tabata/id6744844224)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer HIIT Timer ++ free?

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

### Is Simple Timer free?

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

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

Interval Timer HIIT Timer ++ shows ads; Simple Timer does not.

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

Interval Timer HIIT Timer ++ ships an update every 6 days, and Simple Timer every 4 weeks. Most recently, Interval Timer HIIT Timer ++ was updated on June 11, 2026 and Simple Timer on August 20, 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.*