# Round vs Fit Chronos

The clearest difference is in-app purchases: Round at none against Fit Chronos's 1. Round also leads on update cadence (weekly vs every 3 months). Fit Chronos's advantage is iOS requirement (15.0 vs 17.2). On price, ads and device support there is nothing between them.

Both are free to download. Fit Chronos sells 1 one-off in-app purchase. Round asks for nothing beyond the download.

Round ships an update weekly, Fit Chronos every 3 months. The most recent releases landed on September 24, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Round | Fit Chronos |
| --- | --- | --- |
| 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** | Every 3 months |
| Monetization | Free | — |
| Size | 34 MB | 66 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryosuke Nakayama](https://appshunter.io/developer/1865209768) | [Mathieu Dupleix](https://appshunter.io/developer/1605868762) |

## 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


### Fit Chronos

[App page](https://appshunter.io/ios/app/fit-chronos/id6774833065)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | one-time |


## Frequently asked questions

### Is Round free?

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

### Is Fit Chronos free?

Fit Chronos is free to download, with in-app purchases available.

### Do Round or Fit Chronos have ads?

Neither Round nor Fit Chronos shows ads.

### Which is updated more often, Round or Fit Chronos?

Round ships an update weekly, and Fit Chronos every 3 months. Most recently, Round was updated on September 24, 2026 and Fit Chronos on September 13, 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.*