# Data Rhythm vs Focus One

The clearest difference is iOS requirement: Data Rhythm at 16.6 against Focus One's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Data Rhythm ships an update every 3 weeks, Focus One every 2 weeks. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Data Rhythm | Focus One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 17 MB | 6 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Masaki Hayashi](https://appshunter.io/developer/1609931545) | [BYNET](https://appshunter.io/developer/1811735131) |

## What reviewers say

### Data Rhythm

[App page](https://appshunter.io/ios/app/data-rhythm/id1639696025)

**Features:** macOS Compatibility

**In-app purchases:** none


### Focus One

[App page](https://appshunter.io/ios/app/focus-one-adhd-and-focus-timer/id6756911974)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Data Rhythm free?

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

### Is Focus One free?

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

### Do Data Rhythm or Focus One have ads?

Both Data Rhythm and Focus One show ads.

### Which is updated more often, Data Rhythm or Focus One?

Data Rhythm ships an update every 3 weeks, and Focus One every 2 weeks. Most recently, Data Rhythm was updated on October 9, 2026 and Focus One on September 30, 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.*