# Lectures.AI vs STEM Tutor

The clearest difference is in-app purchases: Lectures.AI at none against STEM Tutor's 1. STEM Tutor's advantage is iOS requirement (18.2 vs 26.1). On price, ads and device support there is nothing between them.

Both are free to download. STEM Tutor sells 1 in-app purchase, starting at $0.99 per month. Lectures.AI asks for nothing beyond the download.

## The numbers

| Metric | Lectures.AI | STEM Tutor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 48 MB | 6 MB |
| Requires iOS | 26.1 | **18.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ellorra Mohanty](https://appshunter.io/developer/1862628760) | [Curayt, LLC](https://appshunter.io/developer/1012363586) |

## What reviewers say

### Lectures.AI

[App page](https://appshunter.io/ios/app/lecturesai/id6757114709)

**Features:** macOS Compatibility

**In-app purchases:** none


### STEM Tutor

[App page](https://appshunter.io/ios/app/stem-tutor/id6759301043)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STEM Tutor Premium | $0.99 | per month |


## Frequently asked questions

### Is Lectures.AI free?

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

### Is STEM Tutor free?

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

### Do Lectures.AI or STEM Tutor have ads?

Neither Lectures.AI nor STEM Tutor 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.*