# AI for Scientist vs PHD Helper

The clearest difference is in-app purchases: AI for Scientist at none against PHD Helper's 1. On price and iOS requirement there is nothing between them.

Both are free to download. PHD Helper sells 1 one-off in-app purchase. AI for Scientist asks for nothing beyond the download.

## The numbers

| Metric | AI for Scientist | PHD Helper |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Size | 1 MB | 41 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | **iPhone** | — |
| Age rating | 4+ | 4+ |
| Developer | [Sichen Li](https://appshunter.io/developer/1873800175) | [Lauren Gilman](https://appshunter.io/developer/1880124860) |

## What reviewers say

### AI for Scientist

[App page](https://appshunter.io/ios/app/ai-for-scientist/id6758586221)

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

**In-app purchases:** none


### PHD Helper

[App page](https://appshunter.io/ios/app/phd-helper/id6760105075)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me A Coffee | $4.99 | one-time |


## Frequently asked questions

### Is AI for Scientist free?

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

### Is PHD Helper free?

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

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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.*