# STEM Tutor vs Catchword

The clearest difference is iOS requirement: Catchword at 16.4 against STEM Tutor's 18.2. On price, ads, in-app purchases 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 and Catchword sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | STEM Tutor | Catchword |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 6 MB | 74 MB |
| Requires iOS | 18.2 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Curayt, LLC](https://appshunter.io/developer/1012363586) | [Oleksandr Yasko](https://appshunter.io/developer/6801602518) |

## What reviewers say

### 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 |


### Catchword

[App page](https://appshunter.io/ios/app/catchword-spanish-flashcards/id6801602516)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Catchword Pro Monthly | $9.99 | per month |
| Catchword Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is STEM Tutor free?

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

### Is Catchword free?

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

### Do STEM Tutor or Catchword have ads?

Neither STEM Tutor nor Catchword 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.*