# Just One vs Flow90

The clearest difference is in-app purchases: Flow90 at none against Just One's 3. Just One's advantage is iOS requirement (17.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Just One sells 3 in-app purchases, starting at $1.99 per month. Flow90 asks for nothing beyond the download.

## The numbers

| Metric | Just One | Flow90 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 4 MB | 16 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Diego Garcia-Viana](https://appshunter.io/developer/1867220680) | [Alexandra Jager](https://appshunter.io/developer/6778360245) |

## What reviewers say

### Just One

[App page](https://appshunter.io/ios/app/just-one-focus-time/id6759597616)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $1.99 | per month |
| Annual Premium Subscription | $9.99 | per year |
| Lifetime Premium Subscription | $14.99 | one-time |


### Flow90

[App page](https://appshunter.io/ios/app/flow90/id6778360123)

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

**In-app purchases:** none


## Frequently asked questions

### Is Just One free?

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

### Is Flow90 free?

Flow90 is free to download, with no in-app purchases.

### Do Just One or Flow90 have ads?

Neither Just One nor Flow90 shows ads.

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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.*