Get Apple TestFlight: Download the official, free TestFlight app from the App Store on your iPad. TestFlight is Apple's official platform for distributing pre-release software securely. Make sure your device is updated to modern system software (iOS 27+, iPadOS 27+, macOS 27+, watchOS 27+, or visionOS 27+).
Tap "Join Beta" on CodeWing: Return to this page and tap the Join Beta button above. Safari will trigger the official TestFlight invitation link. If prompted with "Open in TestFlight?", tap Open.
Accept Developer Invitation: TestFlight will launch and display the latest build notes and tester information for Hoshi Reader. Tap Accept to register your Apple Account into the beta testing group.
Install & Start Testing: Tap Install (or Update) to download the build directly to your device. You'll receive instant notifications inside TestFlight whenever Manh-Hao Steffen Pham pushes new builds, bug fixes, or feature updates.
Essential Beta Testing Tips:
Apple 10,000 Tester Cap: Apple limits public TestFlight groups to 10,000 active users. If slots are currently full, tap Get Slot Alerts above to be notified the second a slot opens.
100% Free Sandbox Purchases: In-app purchases, subscriptions, and pro features in TestFlight are simulated in Apple's sandbox environment at $0.00 — your Apple Account is never billed.
90-Day Build Lifespan: Each build expires after 90 days. Developers periodically push updates that reset the countdown, and your personal app data is preserved.
Revert to App Store Anytime: You can switch back to the public release at any time by redownloading Hoshi Reader directly from the regular App Store.
About Hoshi Reader
Hoshi Reader is a lightweight Japanese EPUB reader with a built-in pop-up dictionary and Anki mining support, made for immersion learning.
Main Features:
Vertical (縦書き) and horizontal (横書き) reading modes
Yomitan-like pop-up dictionary with proper deinflection support
Support for all Yomitan term, frequency and pitch dictionaries
Dictionary audio support
AnkiMobile mining support
Fully configurable Anki card format, with most handlebars targeting Lapis implemented
Sasayaki (Audiobooks): Sync audiobooks to book text to read along
How do I join the Hoshi Reader TestFlight beta on iPadOS?
First, download Apple's official TestFlight app from the App Store on your iPad. Then return to this page and tap the "Join Beta" button above. Your device will automatically open TestFlight and prompt you to accept the developer's beta invitation. Tap "Accept" and then "Install" to start testing Hoshi Reader. If it says "This beta is full", tap "Get Slot Alerts" to be notified instantly when a slot opens.
Is testing Hoshi Reader on TestFlight safe and free?
Yes, testing Hoshi Reader is 100% safe and free. Every public TestFlight build must strictly follow Apple's App Review Guidelines and passes Apple's automated and manual security checks before public invitation links can be distributed. All betas operate within Apple's secure operating system sandbox and cannot access your device data without explicit permission. The beta is developed and maintained by Manh-Hao Steffen Pham.
Do in-app purchases or subscriptions cost real money during TestFlight beta testing?
No. In TestFlight, Apple connects all transactions to its free Sandbox environment. Any in-app purchase, pro feature tier, or subscription inside Hoshi Reader will display "[Environment: Sandbox]" and costs $0.00. Your Apple Account or credit card will never be billed for purchases made within a TestFlight beta build.
Does Hoshi Reader support iPadOS 27, Stage Manager, Split View, and Apple Pencil?
Yes, Hoshi Reader is fully optimized for iPadOS 27 and iPadOS 26. It supports modern iPad multitasking features including Stage Manager, Split View, Slide Over, and Apple Pencil precision input across iPad Pro, iPad Air, iPad mini, and standard iPad models.
What should I do if the Hoshi Reader TestFlight beta says "This beta is full"?
Apple enforces a strict cap of 10,000 public testers per TestFlight app. Popular betas fill up quickly, but spots reopen regularly because Apple automatically purges inactive testers, and Manh-Hao Steffen Pham frequently clears inactive seats before dropping new beta builds. Tap the "Get Slot Alerts" button on this page to receive instant Email and Telegram alerts from CodeWing the moment an open slot is detected. You can also discover trending alternatives in the Books category.
Will installing the beta replace my current App Store version of Hoshi Reader, and will I lose my data?
Installing the TestFlight beta will replace the App Store version on your iPad, but all your local app data, documents, logins, and configurations are safely preserved. If you ever want to switch back to the stable public release, you can simply redownload Hoshi Reader directly from the App Store at any time without losing your data.
How long does a TestFlight beta build last before it expires?
Each TestFlight build has a maximum lifespan of 90 days from the day the developer uploaded it to Apple. You can see the countdown days directly beneath Hoshi Reader's title in your TestFlight app. Developers regularly release new builds with improvements, which automatically resets the 90-day timer so your testing is uninterrupted.
How do I send feedback or report bugs for Hoshi Reader?
You can send feedback directly to Manh-Hao Steffen Pham by taking a screenshot while using Hoshi Reader and tapping "Share Beta Feedback", or by opening TestFlight, tapping Hoshi Reader, and selecting "Send Beta Feedback". You can include notes, screenshots, and system logs to help the developer fix issues before the official App Store launch.
