# 檸檬樹 vs MistakeBook

The clearest difference is review sentiment: MistakeBook at 100% against 檸檬樹's 43%. MistakeBook also leads on update cadence (monthly vs every 20 months) and chart position (#197 vs unranked). 檸檬樹's advantage is price (Free vs $1.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

檸檬樹 is free to download; MistakeBook costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

檸檬樹 ships an update every 20 months, MistakeBook monthly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 檸檬樹 | MistakeBook |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1131941339/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Monthly** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#197** |
| Size | 36 MB | 26 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Darcherng Duh](https://appshunter.io/developer/394837303) | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) |

## What reviewers say

### 檸檬樹

[App page](https://appshunter.io/ios/app/id1131941339)

Learn practical Japanese conversation skills through real-life scenarios. This app focuses on how grammar rules combine with emotional responses to form correct Japanese sentences in actual situations. It offers a comprehensive learning experience with grammar explanations, usage examples, and simulated conversations.

**Highlights:** Real-life conversation scenarios, Grammar rule explanations, Expression pattern guidance, Simulated Japanese interactions, Offline reading mode, Adjustable speech speed, Search and bookmarking

**In-app purchases:** none


### MistakeBook

[App page](https://appshunter.io/ios/app/mistakebook-wrong-answer-log/id6770173206)

**Currently charting:** #197 Top Paid · Education (US App Store)

Log and review incorrect answers to improve learning. Organize mistakes by subject and topic, and utilize spaced repetition to reinforce weak areas. Track progress with visual charts and daily check-ins for effective test preparation.

**Highlights:** Log mistakes with photos and notes, Organize by subject and custom tags, Spaced repetition review mode, Ebbinghaus forgetting curve schedule, Progress charts and stats dashboard, Data import/export backup

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

**In-app purchases:** none


## Frequently asked questions

### Is 檸檬樹 free?

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

### Is MistakeBook free?

MistakeBook costs $1.99, with no in-app purchases.

### Do 檸檬樹 or MistakeBook have ads?

Neither 檸檬樹 nor MistakeBook shows ads.

### Which is updated more often, 檸檬樹 or MistakeBook?

檸檬樹 ships an update every 20 months, and MistakeBook monthly. Most recently, 檸檬樹 was updated on October 24, 2026 and MistakeBook on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*