# 嗯背单词JP vs Imiru

The clearest difference is in-app purchases: Imiru at none against 嗯背单词JP's 3. Imiru also leads on review sentiment (94% vs 69%) and rating (5.0 vs 4.8). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 嗯背单词JP sells 3 in-app purchases, starting at $2.99 per year. Imiru asks for nothing beyond the download.

Imiru holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 18 and 7 respectively. Written reviews point the same way: 69% of 嗯背单词JP's written reviews are positive against 94% of Imiru's.

嗯背单词JP ships an update every 4 days, Imiru weekly. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 嗯背单词JP | Imiru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (18 ratings)](https://appshunter.io/ios/app/jp/id6502523869/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/imiru/id6786283478/reviews)** |
| Number of ratings | **18** | 7 |
| Positive reviews | 69.2% of reviews | **94.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | Freemium | **Free** |
| Size | 771 MB | 55 MB |
| Requires iOS | 16 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [斌斌 沈](https://appshunter.io/developer/1509733863) | [奕舟 颜](https://appshunter.io/developer/1800189948) |

## What reviewers say

### 嗯背单词JP

[App page](https://appshunter.io/ios/app/jp/id6502523869)

This app uses the Leitner Box algorithm for spaced repetition to help you memorize Japanese vocabulary. It offers various learning modes, customizable definitions, and high-quality pronunciation.

**Highlights:** Leitner Box spaced repetition algorithm, iCloud backup and sync, High-quality TTS pronunciation, Three learning modes (quick, spelling, dictation), Editable definitions and examples, Word notes and built-in dictionary

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 赞助会员 | $2.99 | per year |
| 终身会员 | $4.99 | one-time |
| 终身会员 | $6.99 | one-time |


### Imiru

[App page](https://appshunter.io/ios/app/imiru/id6786283478)

Master Japanese katakana loanwords with daily challenges. This app helps you recognize unfamiliar characters by connecting them to their original words, building your vocabulary through engaging practice and progress tracking.

**Highlights:** Daily katakana loanword challenges, Progress tracking with calendar streaks, Replay cards for missed days, XP and level-up system, Cloud sync across devices

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

**In-app purchases:** none


## Frequently asked questions

### Is 嗯背单词JP free?

嗯背单词JP is free to download, with in-app purchases available.

### Is Imiru free?

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

### Which has better reviews, 嗯背单词JP or Imiru?

Imiru is rated higher. 嗯背单词JP averages 4.8 out of 5 from 18 ratings, while Imiru averages 5.0 from 7 ratings.

### Do 嗯背单词JP or Imiru have ads?

Neither 嗯背单词JP nor Imiru shows ads.

### Which is updated more often, 嗯背单词JP or Imiru?

嗯背单词JP ships an update every 4 days, and Imiru weekly. Most recently, 嗯背单词JP was updated on October 13, 2026 and Imiru on October 14, 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.*