# LeitnerAI vs OnLeitner

The clearest difference is in-app purchases: LeitnerAI at none against OnLeitner's 1. LeitnerAI also leads on iOS requirement (16.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OnLeitner sells 1 one-off in-app purchase. LeitnerAI asks for nothing beyond the download.

LeitnerAI ships an update every 3 weeks, OnLeitner fortnightly. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | LeitnerAI | OnLeitner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/leitnerai-simple-anki/id6755983344/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 5 MB | 5 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [Amir Faghihi](https://appshunter.io/developer/1857837795) | [Ruben Gonzalez](https://appshunter.io/developer/1885517252) |

## What reviewers say

### LeitnerAI

[App page](https://appshunter.io/ios/app/leitnerai-simple-anki/id6755983344)

This application uses the Leitner system to help users learn and memorize vocabulary. Words are sorted into boxes based on mastery, with AI assisting in creating an optimal learning path. It focuses on efficient study by prioritizing difficult words.

**Highlights:** Leitner system for spaced repetition, Vocabulary memorization, AI-generated learning paths, Progress tracking through study boxes, Focus on difficult words

**Features:** Vision Pro support

**In-app purchases:** none


### OnLeitner

[App page](https://appshunter.io/ios/app/onleitner/id6760651622)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OnLeitner Premium | $0.99 | one-time |


## Frequently asked questions

### Is LeitnerAI free?

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

### Is OnLeitner free?

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

### Do LeitnerAI or OnLeitner have ads?

Neither LeitnerAI nor OnLeitner shows ads.

### Which is updated more often, LeitnerAI or OnLeitner?

LeitnerAI ships an update every 3 weeks, and OnLeitner fortnightly. Most recently, LeitnerAI was updated on October 8, 2026 and OnLeitner on October 9, 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.*