# Booklet vs Kartei

The clearest difference is device support: Kartei at 3 against Booklet's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Booklet sells 2 in-app purchases, starting at $9.99 per month and Kartei sells 9 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Booklet ships an update every 5 days, Kartei every 3 days. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Booklet | Kartei |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 40 MB | 12 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Nikita Vasilyev](https://appshunter.io/developer/1330639822) | [Marc Hammerschmidt](https://appshunter.io/developer/1838149940) |

## What reviewers say

### Booklet

[App page](https://appshunter.io/ios/app/booklet-spaced-repetition/id6738869598)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $44.99 | per year |


### Kartei

[App page](https://appshunter.io/ios/app/kartei-study-flashcards/id6819690804)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kartei AI Monthly | $3.99 | per month |
| Kartei Pro Monthly | $3.99 | per month |
| Kartei Pro + AI Monthly | $5.99 | per month |
| Kartei Pro Yearly | $17.99 | per year |
| Kartei AI Yearly | $24.99 | per year |
| Kartei Pro + AI Yearly | $39.99 | per year |
| 150 AI Pages | $2.99 | one-time |
| 500 AI Pages | $5.99 | one-time |
| Kartei Pro Lifetime | $44.99 | one-time |


## Frequently asked questions

### Is Booklet free?

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

### Is Kartei free?

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

### Do Booklet or Kartei have ads?

Neither Booklet nor Kartei shows ads.

### Which is updated more often, Booklet or Kartei?

Booklet ships an update every 5 days, and Kartei every 3 days. Most recently, Booklet was updated on October 30, 2026 and Kartei on November 10, 2026.

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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.*