# CleanLung vs MassAI

The clearest difference is in-app purchases: CleanLung at none against MassAI's 3. CleanLung also leads on update cadence (every 4 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MassAI sells 3 in-app purchases, starting at $9.99 per month. CleanLung asks for nothing beyond the download.

CleanLung ships an update every 4 days, MassAI every 6 weeks. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CleanLung | MassAI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Size | 38 MB | 179 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Lee Yahav](https://appshunter.io/developer/1851414009) | [Yair Luzon](https://appshunter.io/developer/1849450075) |

## What reviewers say

### CleanLung

[App page](https://appshunter.io/ios/app/cleanlung/id6755426221)

**Features:** macOS Compatibility

**In-app purchases:** none


### MassAI

[App page](https://appshunter.io/ios/app/massai/id6756226316)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $9.99 | per month |
| MassPro | $9.99 | per month |
| Premium | $59.99 | per 6 months |


## Frequently asked questions

### Is CleanLung free?

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

### Is MassAI free?

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

### Do CleanLung or MassAI have ads?

Neither CleanLung nor MassAI shows ads.

### Which is updated more often, CleanLung or MassAI?

CleanLung ships an update every 4 days, and MassAI every 6 weeks. Most recently, CleanLung was updated on October 7, 2026 and MassAI on October 25, 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.*