识日 vs PolyEcho
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
识日
This intelligent app aids Japanese learners with smart vocabulary memorization, handwriting practice, and a comprehensive dictionary. It offers systematic 50-sound learning, example sentences with pronunciation and grammar analysis, and engaging review modes to enhance language acquisition.
- Smart vocabulary memorization
- Handwriting and listening practice
- Comprehensive Japanese dictionary
- Systematic 50-sound learning
- Example sentences with grammar analysis
- Engaging review modes
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「识日」是一款专为日语学习者设计的智能学习应用，致力于帮助您轻松掌握日语，无论您是初学者还是有一定基础的学习者，识日都为您提供全面、高效的学习支持。 主要功能： 智能背词：基于艾宾浩斯记忆曲线的学习策略，帮助您高效背诵日语单词，提升词汇量。 手写与听写：学习和复习模块均支持手写输入和听写联系，增强您的记忆效果和语言运用能力。 词汇查询：内置强大的日语词典，快速查询单词的意思、读音和用法，方便您的学习和交流。 50音学习：提供系统化的50音学习模块，让您轻松掌握日语的基础发音规则，打下坚实的基础。 例句发音与语法解析：每个单词均提供JLPT N1到N5不同难度的发音例句，并且做了语法分析帮助您理解语法和用法。 联想词组：通过联想词组加深记忆，帮助您在实际交流中灵活运用。 洗脑循环与复习模式：采用创新的洗脑循环复习模式，结合连连看等趣味游戏，让复习变得轻松有趣。 识日是您日语学习旅程中的得力助手，助您在学习过程中事半功倍。快来下载体验，开启您的日语学习之旅吧！ 功能和数据都在持续进化中，如果有需求和意见可以通过以下方式联系 联系作者 APP内：反馈＆建议 邮箱：phpdai@qq.com 官网：https://www.shiri.app 小红书账号：独立开发Jin 隐私政策: https://www.shiri.app/index/privacy 用户隐私: https://www.shiri.app/index/user
PolyEcho
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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
Verdict
The clearest difference is iOS requirement: PolyEcho at 13.0 against 识日's 15.5. 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
Both are free to download. 识日 sells 2 one-off in-app purchases 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.
识日 ships an update every 9 days, PolyEcho every 5 days. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.
| Parameter | 识日 | PolyEcho |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (601 ratings) — better | — |
| Positive reviews | 94.9% of reviews | — |
| Number of ratings | 601 — better | — |
| Update frequency | Every 9 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 112 MB | 207 MB |
| Age rating | 12+ | 4+ |
| Developer | Hangzhou Jingque Network Technology Co., Ltd. | 楷博 尚 |
Bugs and requests
识日
Reported bugs
7 issues- Notes fail to save despite confirmation message
- Word duplication in study sessions (appearing 2-3 times)
- Audio/pronunciation suddenly stops working
- App crashes or freezes after updates
- Word lookup function is slow
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- Foreign phone numbers rejected during registration
- Flashing animation in memory technique section
Requested features
14 requests- Team/group learning with friend notifications
- Leaderboard system (optional participation)
- Practice exercises and quiz functionality
- Faster or removable word-switching animations
- Local offline dictionary/word lookup
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- Handwriting input method for learning
- Pronunciation buttons for associated words
- Image text recognition from photo library
- Trial membership option
- Friend/buddy system for mutual encouragement
- Randomized word order option
- Email-based registration alternative
- Listening comprehension in review modes
- Manual word categorization shortcuts
PolyEcho
Not enough reviews yet to summarise bugs or requests.
In-app purchases
识日
- 一年会员$9.99
- 终生会员$19.99
PolyEcho
- Monthly Subscription$12.991 Month
- Semi-Annual Subscription$59.996 Months
- Annual Subscription$99.991 Year
- 5-Time Conversation Credit$2.99
