# Round vs Interval Timer (Simple)

The clearest difference is in-app purchases: Round at none against Interval Timer (Simple)'s 1. Interval Timer (Simple)'s advantage is iOS requirement (15.1 vs 17.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Interval Timer (Simple) sells 1 one-off in-app purchase. Round asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 24, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Round | Interval Timer (Simple) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/round-hiit-workout-timer/id6757195833/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free | — |
| Size | 34 MB | 28 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryosuke Nakayama](https://appshunter.io/developer/1865209768) | [Domett Xing](https://appshunter.io/developer/1876098022) |

## What reviewers say

### Round

[App page](https://appshunter.io/ios/app/round-hiit-workout-timer/id6757195833)

This interval timer is designed for high-intensity interval training (HIIT), Tabata, and circuit workouts. It allows users to create custom routines with multiple exercises and track their progress. The app offers haptic alerts and can be controlled from an Apple Watch.

**Highlights:** Customizable interval routines, HIIT, Tabata, and circuit training support, Apple Watch control, Haptic alerts for round changes, Visual arc timer, Workout progress tracking, Apple Health integration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Interval Timer (Simple)

[App page](https://appshunter.io/ios/app/interval-timer-simple/id6758968811)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $6.99 | one-time |


## Frequently asked questions

### Is Round free?

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

### Is Interval Timer (Simple) free?

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

### Do Round or Interval Timer (Simple) have ads?

Neither Round nor Interval Timer (Simple) shows ads.

### Which is updated more often, Round or Interval Timer (Simple)?

Round ships an update weekly, and Interval Timer (Simple) weekly. Most recently, Round was updated on September 24, 2026 and Interval Timer (Simple) on September 5, 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.*