# Focus ADHD vs PUB Reader & WPD File Viewer

The clearest difference is in-app purchases: Focus ADHD at none against PUB Reader & WPD File Viewer's 3. Focus ADHD also leads on iOS requirement (12.4 vs 17.0). PUB Reader & WPD File Viewer's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. PUB Reader & WPD File Viewer sells 3 in-app purchases, starting at $4.99 per month. Focus ADHD asks for nothing beyond the download.

Focus ADHD ships an update every 2 months, PUB Reader & WPD File Viewer weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Focus ADHD | PUB Reader & WPD File Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 29 MB | 42 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Tarik Persad](https://appshunter.io/developer/1761796847) | [EUTOPIX LABS](https://appshunter.io/developer/1896294696) |

## What reviewers say

### Focus ADHD

[App page](https://appshunter.io/ios/app/focus-adhd/id6618147158)

**Features:** macOS Compatibility

**In-app purchases:** none


### PUB Reader & WPD File Viewer

[App page](https://appshunter.io/ios/app/pub-reader-and-wpd-file-viewer/id6799004694)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PubHarbor Pro (Monthly) | $4.99 | per month |
| PubHarbor Pro (Yearly) | $14.99 | per year |
| PubHarbor Pro Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Focus ADHD free?

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

### Is PUB Reader & WPD File Viewer free?

PUB Reader & WPD File Viewer is free to download, with in-app purchases available.

### Do Focus ADHD or PUB Reader & WPD File Viewer have ads?

Neither Focus ADHD nor PUB Reader & WPD File Viewer shows ads.

### Which is updated more often, Focus ADHD or PUB Reader & WPD File Viewer?

Focus ADHD ships an update every 2 months, and PUB Reader & WPD File Viewer weekly. Most recently, Focus ADHD was updated on October 30, 2026 and PUB Reader & WPD File Viewer on October 31, 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.*