Comparison

嗯背单词JP vs PolyEcho

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

嗯背单词JP

Free

📚 Education

★ 4.818 ratingsView app →

About

嗯背单词JP

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

Read full description

一个可以和教材同步学习的日语背单词 App，原书课时，原书释义，原书顺序。 ● 收录教材《新标准日本语》《大家的日本语》《综合日语》《新编日语教程》《新编日语重排本》《日语综合教程》《新经典日本语》《新日本语教程》《新时代大学日语》《新发现日本语》《日语完全教程》《JLPT红宝书》《JLPT绿宝书》《日语四六级单词》《日语考研 203 单词》 ● iCloud 自动备份与同步 - 支持 iPad 和 iOS 学习进度同步 - 学习进度，单词笔记，释义编辑等永久保存在你的 iCloud 账号 ● 教学级发音质量 - 所有单词发音使用日本商用级 TTS 软件 Voicepeak 生成，发音清晰，语调准确 - 使用内置 Voicevox TTS 引擎播放例句发音，超过 20 个人物，40 多种语调可选 ● 三种学习模式 - 速记模式，适合只需要听懂和看懂的用户 - 拼写模式，适合需要深度记忆并使用日语输入的用户 - 听写模式，适合需要记住完整释义，参加 JLPT 考试的用户以上三种模式可以独立使用，也可以根据需要混搭 ● 自由编辑释义 - 释义有错漏，还在等更新？ - 你可以编辑词性，释义，例句在内的所有内容 ● 我们还有这些功能 - 单词笔记 - 在线查词 - 内置词典 - 我的生词本 - 单词随身听 ● 联系我（们) 邮　件：superwhitecosmos@gmail.com ● 服务协议用户协议: https://github.com/WhiteCosmos/Tougher-App-Support/blob/main/TermsOfService 隐私政策: https://github.com/WhiteCosmos/Tougher-App-Support/blob/main/Privacy%20Policy

About

PolyEcho

Read full description

学外语不想再从香蕉苹果天气问路开始？让我们直接从自己感兴趣的话题开始，让ai把任何外语的内容都降低到能理解的程度，直接把自己丢入另一语言的世界里吧！【核心功能】 1. 单词学习，采用延伸出各种文化含义的词典，单词组成的最小语境故事，让单词成为另一语言世界鲜活的向导，不再是无意义的符号 2. AI对话功能,将各种有趣但外语学习者难以全然理解的内容转换成易于理解的对话，回到人类的对话本能，辅以AI的润色讲解与翻译，让人们得以在新技术的帮助下，直接补足自己的语言水平开始进行有意义的对话，进行更有意义、成就感的学习。【使用条款】：https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

嗯背单词JP4 screens

PolyEcho4 screens

Verdict

The call

The clearest difference is iOS requirement: PolyEcho at 13.0 against 嗯背单词JP's 16. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 嗯背单词JP sells 3 in-app purchases, starting at $2.99 per year and PolyEcho sells 4 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

嗯背单词JP ships an update every 4 days, PolyEcho every 5 days. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 9 level

嗯背单词JP versus PolyEcho: the parameters behind the verdict, then further details
Parameter	嗯背单词JP	PolyEcho
Price	Free	Free
Rating	4.8 (18 ratings) — better	—
Positive reviews	69.2% of reviews	—
Number of ratings	18 — better	—
Update frequency	Every 4 days — better	Every 5 days
Ads	No	No
In-app purchases	Yes	Yes
Monetization	Freemium	—
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	16	13.0 — better
Further details — not scored
Size	771 MB	207 MB
Age rating	4+	4+
Developer	斌斌沈	楷博尚

In-app purchases

3 purchases

嗯背单词JP

Subscriptions1

赞助会员$2.991 Year

One-time2

终身会员$4.99
终身会员$6.99

4 purchases

PolyEcho

Subscriptions3

Monthly Subscription$12.991 Month
Semi-Annual Subscription$59.996 Months
Annual Subscription$99.991 Year

One-time1

5-Time Conversation Credit$2.99

Questions

Is 嗯背单词JP free?

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

Is PolyEcho free?

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

Do 嗯背单词JP or PolyEcho have ads?

Neither 嗯背单词JP nor PolyEcho shows ads.

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

嗯背单词JP ships an update every 4 days, and PolyEcho every 5 days. Most recently, 嗯背单词JP was updated on October 3, 2026 and PolyEcho on September 30, 2026.