书中课堂 vs Onsei
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
书中课堂
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日阅通是由浙江清华长三角研究院和中文在线集团共同研发的人工智能图像技术应用，具有多项发明专利，语音笔记与文档融合，让你拥有自己的在线课堂。 RWM文件(Reading Writing Marking)：一种新的文件格式，可播放语音注释，存储容量仅视频文件的千分之五。 1. 扫描纸质文稿：自动连续多页扫描纸质文稿，并将其保存为pdf，可重新排序制作为数字文件，导出到其他应用，即可制作为RWM文件，共享至课堂或分享给朋友。 2. 写字板：在白板上创建RWM文件，分享给好友或共享至课堂。 3. open in：来自其他应用(如微信、QQ)拷贝至日阅通、制作RWM文件。 客服邮箱：service@dayread.cn
Onsei
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Onsei is a Japanese learning app designed for focused daily study. Build vocabulary and grammar with spaced repetition, clear review flows, native audio, and scenario-based practice that helps you turn study into real usage. Features: • Vocabulary and grammar review • Spaced repetition scheduling • Daily study sessions and progress tracking • Japanese audio playback • Optional account sync across devices • Scenario-based practice for everyday situations
Screenshots
Verdict
The clearest difference is update cadence: Onsei at every 10 days against 书中课堂's monthly. 书中课堂's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
书中课堂 ships an update monthly, Onsei every 10 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | 书中课堂 | Onsei |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 34 MB | 33 MB |
| Age rating | 4+ | 12+ |
| Developer | Hangzhou Dayread Communications Co., Ltd. | 鑫 陈 |
In-app purchases
书中课堂
No in-app purchases
Onsei
No in-app purchases
