Stamper vs KRed Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stamper
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Stamper 是一款专门为照片添加日期和位置水印的 app。 目前 Stapmer 支持以下功能： 支持为照片添加日期、位置水印 支持获取照片原始拍摄时间及位置（如果包含位置信息） 支持手动调整时间及位置 支持获取用户当前位置信息 支持自定义日期格式化方式 支持单独调整时间和位置信息的位置、边距，几乎可以将文字放在任何你想要放的地方 支持为文字添加阴影、背景色 支持单独调整文字、阴影、背景色的颜色、透明度 支持自定义颜色 支持旋转照片来添加水印 支持删除和保留照片 Exif 元数据，不用担心保存以后元数据丢失 使用 Stamper 不会对照片质量有任何损坏 提供浅色和深色两种主题 无广告、无内购 Stamper 几乎所有的操作都是可自由设置的，更多玩法等你来发现。 如果您在使用中有任何意见或建议，请给我们发邮件以帮助我们改进，邮箱：codiy.huang@gmail.com
KRed Reader
This app offers a minimalist and distraction-free reading experience for various e-book formats, including novels, comics, and academic papers. It features customizable layouts, text-to-speech functionality, and multiple import options for easy library management.
- Supports EPUB, PDF, MOBI, AZW3, TXT, CBZ, CBR
- Distraction-free minimalist interface
- Customizable fonts, spacing, and night mode
- Text-to-Speech (TTS) for TXT files
- WiFi, Web, and Photo-to-Book import options
- Smart bookshelf with auto-categorization
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KRed Reader: Minimalist Design · Full Format Support · Your Portable Library -Supports All Major E-Book Formats KRed Reader supports EPUB, PDF, MOBI, AZW3, TXT, CBZ, CBR, and other popular e-book formats. Whether you're reading novels, comics, academic papers, or scanned documents, everything displays smoothly! No complicated conversions needed—just import with one tap and enjoy an immersive reading experience. - Distraction-Free Reading Minimalist Interface: No ads, no bloat—just pure content. Customizable Layout: Adjust fonts, text size, spacing, and background color. Night mode protects your eyes. Smart Bookshelf: Auto-categorizes books with tag support for quick access. - Powerful Tools for Efficient Reading Text-to-Speech (TTS): Listen to TXT books on the go—perfect for commutes. Perfect for Every Scenario Students: Annotate PDF textbooks and research papers with ease. Fiction Lovers: EPUB text ensures comfortable long reading sessions. Comic Fans: Smooth zooming and flipping for PDF comics. - Multiple Import Options, Fast & Easy WiFi Transfer: Wirelessly send books from your computer or NAS—no cables needed. Batch Upload: Quickly import large files for better library management. Web Download: Directly download PDF, TXT, EPUB resources and import them instantly. Photo-to-Book: Combine multiple photos into a book and flip through them like pages. QR Code Sharing: Share books with one scan. Privacy Policy:https://privacy.kingjetapps.com/privacy/reader/ios_privacy_reader.html Terms of Service: https://privacy.kingjetapps.com/privacy/reader/ios_term_reader.html Contact Us: For feedback or support, email support@kingjetapps.com.
Screenshots
Verdict
The clearest difference is price: KRed Reader at Free against Stamper's $1.99. On update cadence, 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
KRed Reader is free to download; Stamper costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stamper ships an update every 3 weeks, KRed Reader monthly. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.
| Parameter | Stamper | KRed Reader |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | — | 4.9 (46 ratings) — better |
| Positive reviews | — | 90.9% of reviews |
| Number of ratings | — | 46 — better |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 14.0 |
| Further details — not scored | ||
| Size | 4 MB | 57 MB |
| Age rating | 4+ | 17+ |
| Developer | Yipeng Huang | Kingjet Network Co., Ltd. |
In-app purchases
Stamper
No in-app purchases
KRed Reader
No in-app purchases
