# Plain AI vs DOS Focus

The clearest difference is in-app purchases: Plain AI at none against DOS Focus's 2. DOS Focus's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. DOS Focus sells 2 in-app purchases, starting at $17.99 per year. Plain AI asks for nothing beyond the download.

## The numbers

| Metric | Plain AI | DOS Focus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/dos-focus/id6754083210/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | — | Freemium |
| Size | 16 MB | 105 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jarle Hansen](https://appshunter.io/developer/563222855) | [Nguyen Vu Thai](https://appshunter.io/developer/1626985836) |

## What reviewers say

### Plain AI

[App page](https://appshunter.io/ios/app/plain-ai/id6753973258)

**Features:** macOS Compatibility

**In-app purchases:** none


### DOS Focus

[App page](https://appshunter.io/ios/app/dos-focus/id6754083210)

Enhance concentration with nostalgic computer sounds and a distraction-free environment. Customize focus sessions, track progress, and personalize your interface with classic DOS themes for improved productivity.

**Highlights:** Retro soundscapes, Customizable focus sessions, Focus progress reports, Classic DOS themes, Offline and minimal design

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Try DOS FOCUS PRO | $17.99 | per year |
| Try DOS FOCUS PRO | $8.99 | one-time |


## Frequently asked questions

### Is Plain AI free?

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

### Is DOS Focus free?

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

### Do Plain AI or DOS Focus have ads?

Neither Plain AI nor DOS Focus 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.*