# Intervals One vs Round

The clearest difference is in-app purchases: Round at none against Intervals One's 3. Round also leads on update cadence (every 9 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Intervals One sells 3 in-app purchases, starting at $1.99 per month. Round asks for nothing beyond the download.

Intervals One ships an update every 4 months, Round every 9 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Intervals One | Round |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/round-hiit-workout-timer/id6757195833/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | — | Free |
| Size | 64 MB | 37 MB |
| Requires iOS | **17.0** | 17.2 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Ninety Six Software Ltd](https://appshunter.io/developer/1728731100) | [Ryosuke Nakayama](https://appshunter.io/developer/1865209768) |

## What reviewers say

### Intervals One

[App page](https://appshunter.io/ios/app/intervals-one-interval-timer/id6741439106)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Annual | $14.99 | per year |
| Pro Lifetime | $19.99 | one-time |


### 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


## Frequently asked questions

### Is Intervals One free?

Intervals One is free to download, with in-app purchases available.

### Is Round free?

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

### Do Intervals One or Round have ads?

Neither Intervals One nor Round shows ads.

### Which is updated more often, Intervals One or Round?

Intervals One ships an update every 4 months, and Round every 9 days. Most recently, Intervals One was updated on October 30, 2026 and Round on November 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.*