Black UI is a multi-AI dashboard that routes everyday conversation to Gemini and hands genuine coding & debugging work to Claude — then lets you turn that code into a signed APK/AAB through your own GitHub account. Sign in with Google and start chatting.
Ask anything — Gemini handles conversation, drafting, images, PDFs and audio/video by default.
Paste an error or attach a file — the app auto-routes real coding/debugging work to Claude.
Turn the code into a signed Android APK or AAB using your own GitHub account.
Download the build straight from chat and install it on your phone.
A plain-language look at each feature and where your data goes.
Gemini for everyday conversation and media, Claude for code — auto-switched per message, or set manually.
One tap to sign in. Every account gets its own private chats and its own usage limits.
For coding help and builds, add your own keys in Settings. They stay on your device and go straight to the provider.
Attach a file or paste a stack trace — Claude reads it and works the fix directly in the chat.
Generated files, converted images and build artifacts get a direct download link right inside the conversation.
Push a build via GitHub Actions from a maintained base template and get a signed, installable app back.
Black UI asks Google only for the basic sign-in details.
When you sign in, Google shares your name, email address and profile picture with Black UI. We use them only to create and recognise your account, keep your chats separate from other users, and apply fair-use limits. We do not access Gmail, Drive or any other Google data, we do not sell your information, and you can ask us to delete your account at any time. Read the full Privacy Policy and Terms of Service.
Claude coding and the APK/AAB builder are Beta. They depend on external APIs we don't control, so occasional issues are possible. The APK builder scaffolds from our open template at github.com/thoibatrader-ship-it/apk-template — see the Guide for what that means for you.
Quick answers to what people ask most.
No key is needed to chat — sign in with Google and start. Coding help from Claude and the APK/AAB builder use your own Claude API key and GitHub token, which you add in Settings. Those keys are stored only on your device and talk directly to Anthropic and GitHub; they never pass through our servers.
Only your name, email address and profile picture, through the standard Sign in with Google flow. We use them to create your account and give you your own private chats and usage limits. We never see your Google password and cannot access your Gmail, Drive or any other Google data. You can delete your data at any time — see the Privacy Policy.
The APK/AAB builder scaffolds your app from a base Android template we maintain and open-source at github.com/thoibatrader-ship-it/apk-template. It builds using your own GitHub account and Actions minutes. See the Guide page for the full disclaimer on how template-level issues are handled.
Your conversation history is kept on your own device (IndexedDB), separately for each account. When you send a message, it passes through our backend to the AI provider that answers it; we don't save the content of your messages or files on our servers. We keep a small account record (user ID, email, name and sign-in times). Details are in the Privacy Policy.
Yes — Claude coding and the APK/AAB builder are tagged Beta in the dashboard because they depend on fast-moving third-party APIs (Anthropic, GitHub Actions). We fix reported issues quickly; see the Guide page for how to report one.