# ADHD Focus vs ONE

The clearest difference is in-app purchases: ONE at none against ADHD Focus's 2. ADHD Focus's advantage is update cadence (every 3 days vs every 2 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. ADHD Focus sells 2 in-app purchases, starting at $1.99 per 7 days. ONE asks for nothing beyond the download.

ADHD Focus ships an update every 3 days, ONE every 2 weeks. The most recent releases landed on October 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | ADHD Focus | ONE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Size | 32 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Appgineering GbR](https://appshunter.io/developer/1785233826) | [骋飞 武](https://appshunter.io/developer/6775319022) |

## What reviewers say

### ADHD Focus

[App page](https://appshunter.io/ios/app/adhd-focus-that-one-thing/id6746286274)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThatOneThing Premium (1 week) | $1.99 | per 7 days |
| ThatOneThing Premium (1 year) | $3.99 | per year |


### ONE

[App page](https://appshunter.io/ios/app/one-focus-deep-life-timer/id6777599934)

**In-app purchases:** none


## Frequently asked questions

### Is ADHD Focus free?

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

### Is ONE free?

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

### Do ADHD Focus or ONE have ads?

Neither ADHD Focus nor ONE shows ads.

### Which is updated more often, ADHD Focus or ONE?

ADHD Focus ships an update every 3 days, and ONE every 2 weeks. Most recently, ADHD Focus was updated on October 1, 2026 and ONE on October 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.*