# Flashcards.ai Study Cards vs OpeningBook

The clearest difference is in-app purchases: Flashcards.ai Study Cards at none against OpeningBook's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OpeningBook sells 1 one-off in-app purchase. Flashcards.ai Study Cards asks for nothing beyond the download.

## The numbers

| Metric | Flashcards.ai Study Cards | OpeningBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Size | 15 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Infinite Wave Media, LLC](https://appshunter.io/developer/495187294) | [Zhenghong Peng](https://appshunter.io/developer/6797348186) |

## What reviewers say

### Flashcards.ai Study Cards

[App page](https://appshunter.io/ios/app/flashcardsai-study-cards/id6804744424)

**In-app purchases:** none


### OpeningBook

[App page](https://appshunter.io/ios/app/openingbook/id6805625863)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Training Mode | $3.99 | one-time |


## Frequently asked questions

### Is Flashcards.ai Study Cards free?

Flashcards.ai Study Cards is free to download, with no in-app purchases.

### Is OpeningBook free?

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

### Do Flashcards.ai Study Cards or OpeningBook have ads?

Neither Flashcards.ai Study Cards nor OpeningBook 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.*