Looking for beta testers for EPUB Translator: read your own EPUBs in any language

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I’m looking for beta testers for EPUB Translator, a reader for the EPUB books you already own, with tools to help you understand them better in any language.

What you can test:

• Translate with AI: Translate whole chapters into your language with your own API key from OpenAI, Anthropic, Google Gemini, Groq or DeepSeek. Your provider bills you directly; the app adds no extra charges. It can even translate the text inside the book’s images (with any of these providers except DeepSeek).
  
• Understand what you read: Select a word to see its definition, with the meaning that fits the sentence. Use the “What is it?” cards to discover characters, places and music, with photos and even a short audio clip of the songs mentioned.
  
• Audiobook mode and reading settings: Listen to the book read aloud with your device’s voices, or with natural AI voices if you use an OpenAI key. Adjust the font size, switch to night mode, and sync your library and reading position between Android and the web.
  
• Privacy first: Your books are yours. We don’t read them, we don’t sell your data, and we don’t use your content to train AI models. Text is only sent to the AI provider you choose, when you translate or look something up.

What you get as a beta tester:

• Free Premium during the beta: save your API key once in your account and use it on your phone and on the web, with unlimited AI definitions and cards.
  
• Dracula, included as a free sample, plus a list of 152 free classic books you can download to start right away. You can also add your own EPUB files (DRM-free).
  
• A free $1 USD API key, sent to you by email, so you can try all the AI features without your own key or a credit card. It’s enough to translate a few chapters and explore definitions, cards and AI voices.

How to join: You need an Android phone and a Google account. Fill out this form to get access: bit.ly/EPUBTranslator