# DIET 2025 vs Stephen AI

The clearest difference is in-app purchases: DIET 2025 at none against Stephen AI's 2. DIET 2025 also leads on iOS requirement (13.4 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Stephen AI sells 2 in-app purchases, starting at $9.99 per month. DIET 2025 asks for nothing beyond the download.

## The numbers

| Metric | DIET 2025 | Stephen AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 days |
| Size | 48 MB | 63 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Canadian Nuclear Society](https://appshunter.io/developer/1566632045) | [Prabhjot Singh](https://appshunter.io/developer/6800407972) |

## What reviewers say

### DIET 2025

[App page](https://appshunter.io/ios/app/diet-2025/id6753082845)

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

**In-app purchases:** none


### Stephen AI

[App page](https://appshunter.io/ios/app/stephen-ai-smart-study-tutor/id6800407970)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stephen Pro Monthly | $9.99 | per month |
| Stephen Pro Yearly | $71.90 | per year |


## Frequently asked questions

### Is DIET 2025 free?

DIET 2025 is free to download, with no in-app purchases.

### Is Stephen AI free?

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

### Do DIET 2025 or Stephen AI have ads?

Neither DIET 2025 nor Stephen AI 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.*