# Simple Interval Timer vs Rounds

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

Both are free to download. Simple Interval Timer sells 2 in-app purchases, starting at $0.99 per month. Rounds asks for nothing beyond the download.

Simple Interval Timer ships an update weekly, Rounds every 2 weeks. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Simple Interval Timer | Rounds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rounds-interval-hiit-timer/id6762529965/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Free |
| Size | 23 MB | 49 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [阳 童](https://appshunter.io/developer/1782546459) | [Nightjar Labs LLC.](https://appshunter.io/developer/1466628290) |

## What reviewers say

### Simple Interval Timer

[App page](https://appshunter.io/ios/app/simple-interval-timer-flexy/id6742375743)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Yearly Premium | $4.99 | per year |


### Rounds

[App page](https://appshunter.io/ios/app/rounds-interval-hiit-timer/id6762529965)

This interval timer app simplifies workout creation for various training styles like HIIT, Tabata, and circuits. Build custom routines by stacking work, rest, and prep blocks, grouping them into rounds, and saving them as presets for quick access. It's designed for gym use, ensuring it won't interrupt your music.

**Highlights:** Customizable workout builder, Stackable work, rest, and prep blocks, Round grouping and repetition, Save and launch preset workouts, Music interruption-free design, Customizable sound profiles

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Interval Timer free?

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

### Is Rounds free?

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

### Do Simple Interval Timer or Rounds have ads?

Neither Simple Interval Timer nor Rounds shows ads.

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

Simple Interval Timer ships an update weekly, and Rounds every 2 weeks. Most recently, Simple Interval Timer was updated on October 9, 2026 and Rounds 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.*