CHM阅读器专业版 vs sound
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CHM阅读器专业版
Easily view CHM files on your iPhone or iPad. This professional reader supports opening documents from various sources, offers quick navigation via table of contents, and includes full-text search. Enjoy comfortable reading with Dark Mode support.
- Open CHM files from Files, Mail, Safari
- Automatic table of contents parsing
- Full-text search
- Dark Mode support
- View help documents and tech manuals
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应用描述 CHM阅读器专业版 一款专注于 CHM电子文档阅读 的专业阅读工具。 无论是软件开发手册、API接口文档、学习资料，还是个人收藏的电子书，都可以通过 CHM阅读器专业版轻松打开。 无需复杂操作，将你的文档导入设备，即可随时随地开始阅读。 专业CHM阅读体验 支持微软 CHM（Compiled HTML Help）格式： 完整解析CHM目录结构 快速浏览章节内容 支持文本搜索 方便查看技术文档 保留原始文档结构 让传统帮助文件也能在移动设备上拥有舒适的阅读体验。 服务条款: https://chennw.github.io/GuoXue/chmreaderSupport.html
sound
This app helps you focus and learn with a Pomodoro timer and white noise generator. Track your progress with detailed statistics and enjoy a seamless experience with dark mode and dynamic island support.
- Pomodoro focus mode
- Customizable timer and sound alerts
- White noise sound library
- Focus time statistics
- Home screen widgets
- Dark mode and Dynamic Island support
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sound-time 是一款专为高效工作与学习设计的轻量化 iOS 应用，集番茄钟、白噪音、数据统计与个性化小组件于一体。核心功能包括：1) 番茄专注模式：支持自定义时长，搭配生动计时器与音效提醒，助你高效完成任务；2) 白噪音库：精选优质自然音源（如雨声、流水、风声等），模拟真实环境音，屏蔽干扰，营造沉浸式氛围；3) 数据统计：通过精美图表记录专注时长与完成轮次，直观掌握时间管理成果；4) 灵动小组件：随时查看专注状态与音源选择，操作便捷；5) 深色模式与灵动岛适配：完美契合苹果原生设计，保护眼睛的同时提升视觉体验。
Screenshots
Verdict
The clearest difference is review sentiment: sound at 100% against CHM阅读器专业版's 57%. sound also leads on in-app purchases (none vs 3). CHM阅读器专业版's advantage is update cadence (every 10 days vs every 4 months) and iOS requirement (15.6 vs 26.2). 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. CHM阅读器专业版 sells 3 in-app purchases, starting at $1.99 per month. sound asks for nothing beyond the download.
CHM阅读器专业版 ships an update every 10 days, sound every 4 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | CHM阅读器专业版 | sound |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 57.1% of reviews | 100.0% of reviews — better |
| Update frequency | Every 10 days — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.2 |
| Further details — not scored | ||
| Size | 7 MB | 135 MB |
| Age rating | 4+ | 4+ |
| Developer | 宁伟 陈 | 祖浪 吴 |
Customer experience
CHM阅读器专业版
sound
In-app purchases
CHM阅读器专业版
- 月度会员$1.991 Month
- 年度会员$9.991 Year
- 永久会员$12.99
sound
No in-app purchases
