# OneTask ADHD Focus Timer vs Just One

The clearest difference is in-app purchases: Just One at none against OneTask ADHD Focus Timer's 2. Just One also leads on update cadence (daily vs weekly) and iOS requirement (15.6 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. OneTask ADHD Focus Timer sells 2 in-app purchases, starting at $4.99 per month. Just One asks for nothing beyond the download.

OneTask ADHD Focus Timer ships an update weekly, Just One daily. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | OneTask ADHD Focus Timer | Just One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Size | 15 MB | 18 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QUANTUMPARADOX STUDIO PRIVATE LIMITED](https://appshunter.io/developer/1095662507) | [Raving Code](https://appshunter.io/developer/1769017948) |

## What reviewers say

### OneTask ADHD Focus Timer

[App page](https://appshunter.io/ios/app/onetask-adhd-focus-timer/id6757357252)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Focus · Gentle Focus Plan | $4.99 | per month |
| Yearly Focus · Gentle Focus Plan | $29.99 | per year |


### Just One

[App page](https://appshunter.io/ios/app/just-one-one-task-at-a-time/id6764329092)

**In-app purchases:** none


## Frequently asked questions

### Is OneTask ADHD Focus Timer free?

OneTask ADHD Focus Timer is free to download, with in-app purchases available.

### Is Just One free?

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

### Do OneTask ADHD Focus Timer or Just One have ads?

Neither OneTask ADHD Focus Timer nor Just One shows ads.

### Which is updated more often, OneTask ADHD Focus Timer or Just One?

OneTask ADHD Focus Timer ships an update weekly, and Just One daily. Most recently, OneTask ADHD Focus Timer was updated on October 2, 2026 and Just One on October 7, 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.*