书中课堂 vs Delta单词
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
Delta单词
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世界语言，装进口袋 5大洲、10+语系、60+语言、100+词书 纯粹背词，回归简单 背单词最重要的当然是优雅 Polyglot就是你！ 彝语、泰米尔语、尤卡坦玛雅语一网打尽 多词书模式 同时背多个语言是别样的快乐 大千世界，我想看看 学习一种语言，就等于获得了第二个灵魂
Screenshots
Verdict
The clearest difference is in-app purchases: Delta单词 at none against 书中课堂's 8. Delta单词 also leads on update cadence (daily vs monthly). 书中课堂's advantage is iOS requirement (9.3 vs 15.1). On price, ads 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. 书中课堂 sells 8 one-off in-app purchases. Delta单词 asks for nothing beyond the download.
书中课堂 ships an update monthly, Delta单词 daily. The most recent releases landed on September 19, 2026 and September 8, 2026 respectively.
| Parameter | 书中课堂 | Delta单词 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.3 — better | 15.1 |
| Further details — not scored | ||
| Size | 47 MB | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | Hangzhou Dayread Communications Co., Ltd. | 田丰 何 |
In-app purchases
书中课堂
- 1DayreadCoin$0.99
- 6DayreadCoin$0.99
- 45DayreadCoin$6.99
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- 68DayreadCoin$9.99
- 118DayreadCoin$17.99
- 198DayreadCoin$29.99
- 348DayreadCoin$54.99
- 648DayreadCoin$99.99
Delta单词
No in-app purchases
