# Lyn vs Kotobot

Lyn and Kotobot are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Lyn sells 3 in-app purchases, starting at $4.99 per month and Kotobot sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Lyn against 5.0 for Kotobot. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Lyn ships an update every 3 weeks, Kotobot fortnightly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Lyn | Kotobot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/lyn-ai-tutor-and-study-help/id6740411879/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/kotobot/id6761619551/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 90 MB | 50 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thuemmler AI GmbH](https://appshunter.io/developer/1772217985) | [Evan Li](https://appshunter.io/developer/1794009358) |

## What reviewers say

### Lyn

[App page](https://appshunter.io/ios/app/lyn-ai-tutor-and-study-help/id6740411879)

This AI-powered tutor provides instant help with school subjects, homework, and exam preparation. It offers step-by-step explanations, transforms study materials into flashcards, and includes a voice mentor for interactive learning.

**Highlights:** AI tutor for all school subjects, Homework assistance and explanation, Convert study materials to flashcards, Voice mentor and language practice, Spaced repetition flashcards, Personalized learning projects

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nachhilfe Mentor Pro | $4.99 | per month |
| Nachhilfe Mentor Pro | $6.99 | per month |
| Nachhilfe Mentor Pro | $49.99 | per year |


### Kotobot

[App page](https://appshunter.io/ios/app/kotobot/id6761619551)

Master Japanese and Chinese vocabulary with contextual learning and spaced repetition. Focus on real sentences, native audio, and illustrations to ensure long-term retention without the hassle of creating your own study materials.

**Highlights:** Learn vocabulary in context, Native speaker audio, Illustrations for meaning, Spaced repetition algorithm, Multiple card types, Curated vocabulary paths

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kotobot Pro Monthly | $14.99 | per month |
| Kotobot Pro Yearly | $83.99 | per year |


## Frequently asked questions

### Is Lyn free?

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

### Is Kotobot free?

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

### Which has better reviews, Lyn or Kotobot?

Lyn and Kotobot are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Lyn or Kotobot have ads?

Neither Lyn nor Kotobot shows ads.

### Which is updated more often, Lyn or Kotobot?

Lyn ships an update every 3 weeks, and Kotobot fortnightly. Most recently, Lyn was updated on November 4, 2026 and Kotobot on October 31, 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.*