
DotInk: EInk Assistant
Font & Ebook Converter Tool
Free · In-App Purchases · Designed for iPad
The ultimate companion for portable E-ink devices. Convert fonts and e-books locally, preview in real-time, and manage your devices seamlessly offline.
Designed for e-ink enthusiasts, making your portable readers more powerful and easier to use.
Seamlessly convert .ttf fonts and e-books on your phone into .bin fonts, XTC, or EPUB formats perfectly tuned for portable e-ink screens.
[CORE FEATURES]
• WYSIWYG Font Customization
Import external .ttf fonts or use system fonts. Adjust line spacing, tracking, size, weight, and more with precision. Real-time simulation of various e-ink screens—preview exactly how it looks before exporting.
• Powerful E-book Toolbox
Import various e-book formats to preview layouts directly on your phone. Customize formatting and convert to standard formats with a single tap.
• Seamless Device Integration
Wireless connection to supported devices for font pushing and file management. Supported Devices: XTEInk X4, EDCBook, Murphy 3.7, Wudada·Little Ink, and more.
• Privacy First & Offline
100% Offline: All processing is done locally on your device. No user data is ever uploaded. (Note: Network and Location permissions are required solely for connecting to your e-ink hardware.)
[NOTE FROM DEVELOPER]
This app is an indie project built with "AI Vibe Coding." While I strive for perfection, I cannot test every scenario. If you encounter any bugs, I appreciate your understanding.
Thank you to all the "Community Supporters" for your feedback! Feel free to leave suggestions or comments.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
- [Beta] Added support for CrossPoint firmware: includes 4-bit font generation and file management features.
- Font Module: You can now customize preview content in the preview settings.
- eBook Module: Added a second confirmation step for styling when pushing from Kindle devices.
- Fix: Resolved pagination issues during book preview and the endless loading bug when adjusting parameters.
- Fix: Addressed an issue where the paywall could still appear after subscribing and purchases couldn’t be restored.
The developer, 业 毕, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- 业 毕
- Size
- 11.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
English and 2 more
- English, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- Contains
User-Generated Content
- In-App Purchases
Yes
- Yearly Pro USD 6.99
- Lifetime Pro USD 17.99
- Monthly Pro USD 0.99
- Copyright
- © 2025 大业爱数码
