ZenReader vs Control Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZenReader
This app is a versatile ebook reader and document manager supporting numerous file formats. It offers a customizable reading interface, note-taking capabilities, text-to-speech functionality, and robust library management features. Track your reading progress and protect your privacy with advanced security options.
- Supports EPUB, MOBI, PDF, TXT, ZIP, RAR, and more
- Customizable reading interface with night mode
- Note-taking, highlighting, and dictionary integration
- Text-to-speech with multiple language options
- Wi-Fi transfer, iCloud, and AirDrop import
- Gesture and facial recognition for privacy
- Reading statistics and goal setting
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极简阅读器 - 文档整理、笔记、朗读、解压 作为一款好用易上手文档管理APP，它的主要的亮点在于 ● 丰富的格式支持，Txt、Epub、Pdf、Mobi、Azw、Zip、Rar、7z等 ● 支持wifi传书、iCloud导入、隔空传送，即传即到 ● 舒适养眼的阅读界面，很护眼夜间模式，提供多种翻页模式，仿真、平移、滚动、覆盖模式等 ● 强大的自定义功能，自定义文字间距、段落间距、首行缩进，图片背景 ● 好用的笔记记录，长按文字，支持划线、笔记、词典、网页、全文搜索、分享等功能 ● 多种听书朗读功能，支持中文、广东话、英语、德语、意大利语诸多语系 ● 隐私保护，通过手势或者人脸识别解锁 ● 统计您的阅读记录，通过数据来感受你的阅读进展，设置您的阅读目标、阅读时长等 ● 强大的书籍管理功能，支持自定义分组，修改书名，阅读进度，导入导出 ● 自动分章节，你会发现即使你下载的是TXT格式，也能看到完美的章节 ● 提供了所有系统自带的字体，也自己导入字体文件，阅读更善心悦目 让你在沉浸式阅读中获得的最纯粹的体验～ ===== 极简阅读 可以按年订阅或一次性购买。在选择订阅模式时，免费试用或确认购买后，我们将从您的 iTunes 帐户中收取费用。除非在账单周期结束前至少 24 小时关闭自动续订，否则将自动续订。您可以转到 iTunes 帐户设置来管理订阅并关闭自动续订。 政策和使用条款 https://simplereader.super.site/%e9%9a%90%e7%a7%81%e6%94%bf%e7%ad%96
Control Studio
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The application gets as input an open loop transfer function of a control system and calculates and presents its unity feedback closed loop stability by root locus, Bode plot and Nyquist plot.
Screenshots
Verdict
The clearest difference is price: ZenReader at Free against Control Studio's $2.99. ZenReader also leads on iOS requirement (13.0 vs 15.6). Control Studio's advantage is in-app purchases (none vs 4) and ads (none vs shown). On 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
ZenReader is free to download; Control Studio costs $2.99 up front. ZenReader sells 4 in-app purchases, starting at $6.99 per year. Control Studio asks for nothing beyond the download.
ZenReader ships an update every 2 weeks, Control Studio every 5 days. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.
| Parameter | ZenReader | Control Studio |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.7 (359 ratings) — better | — |
| Positive reviews | 81.9% of reviews | — |
| Number of ratings | 359 — better | — |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 64 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | LexyTech Ltd. | Konstantinos Ladiellis |
Bugs and requests
ZenReader
Reported bugs
10 issues- Text replacement shows success but reverts after reopening
- Duplicate chapters in segmentation
- File parsing errors on valid documents
- Audiobook stops when screen locks
- Voice narration language changed to Cantonese after iOS 18
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- Import failure notifications appear repeatedly
- Deleting one file with same name deletes both (EPUB and AZW3)
- Cannot select text across multiple HTML sections
- Settings arrows not clickable, only text is
- QQ file import broken in recent versions
Requested features
19 requests- Simplified audiobook playback controls
- Flexible audiobook starting point selection
- Include audiobook listening time in statistics
- English language UI support
- Direct TXT file editing capability
Show 14 moreShow fewer
- Footnote/link navigation support
- Faster audiobook speed options beyond 3x
- Better quality AI voice narration
- Vertical text layout option
- Auto-page turning feature
- Customizable note colors
- Cross-file text selection and highlighting
- Annotation page navigation
- Instant translation feature for English books
- Customizable tap zones for left-handed users
- Document sorting options
- File management through Files app
- Smarter chapter segmentation
- Compatibility with book formatting standards
Control Studio
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ZenReader
- 1年订阅$6.991 Year
- 限时特惠$9.99
- Pro专业版$14.99
- Pro渠道优惠$39.99
Control Studio
No in-app purchases
