# ADHD Focus vs Just One

The clearest difference is in-app purchases: Just One at none against ADHD Focus's 2. Just One also leads on update cadence (daily vs every 3 days) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

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

ADHD Focus ships an update every 3 days, Just One daily. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ADHD Focus | Just One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Size | 32 MB | 18 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Appgineering GbR](https://appshunter.io/developer/1785233826) | [Raving Code](https://appshunter.io/developer/1769017948) |

## 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 |


### 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 ADHD Focus free?

ADHD Focus 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 ADHD Focus or Just One have ads?

Neither ADHD Focus nor Just One shows ads.

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

ADHD Focus ships an update every 3 days, and Just One daily. Most recently, ADHD Focus was updated on October 25, 2026 and Just One on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*