Black UI is a multi-AI dashboard that routes everyday conversation to Gemini and hands genuine coding & debugging work to Claude. Describe an app or bring an HTML file, and turn it 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 and Actions minutes.
Download the build straight from chat and install it, or publish it wherever you like.
Both end with a signed APK and AAB built on your own GitHub account.
Already have an HTML app from another AI or your own work? Attach the file, ask for an APK, pick a logo and set your keystore password. How it works
Describe the app you want. The AI writes it, runs it live in the chat so you can try it, and builds the APK when you are happy. How it works
After a build, the AI can capture screens from your app and design them into store-ready screenshots, or style the ones you provide. How it works
Watch the full flow: ask for a calculator app, preview it, build the APK, download it and install it on a phone.
Real screenshots from the app. Tap any image to enlarge.
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 your own GitHub Actions from a maintained base template and get a signed, installable app back — your keystore password never leaves your device.
Attach a screenshot and ask where to click. The AI sends your screenshot back with a circle around the button or field.
Voice-overs and instrumental music as MP3, plus file conversion, compression and a basic photo editor, all inside the chat.
Two separate versions of the same idea: turn text or an HTML file into an Android app.
For users in India for now. Sign in with Google and start: Gemini access is included, so you do not need an AI key to chat. It has the most features, and you top up coins and tickets in the Shop when you need more. You add your own Claude key and GitHub token only for coding help and APK builds. See the Guide.
A separate app on the Amazon Appstore, made for users outside India. It is 100% bring-your-own-key: you add your own Gemini key, and optionally your own Claude key and GitHub token. There is no account and no coins or tickets system; the main features unlock with a one-time in-app purchase (listed at US$19 at the time of writing, check the listing for the current price). It appears on Amazon as “BlackUI: BYOK Lite”.
We ask 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.
Black UI is the main version on this site, for users in India for now, with Gemini access included and coins and tickets you can top up. Black UI BYOK Lite is a separate app on the Amazon Appstore for users outside India: it is 100% bring-your-own-key, has no account or coins system, and unlocks its main features with a one-time in-app purchase.
Yes. Attach your HTML file in the chat and ask for an APK. You pick a logo, set a keystore key and password, and the signed APK and AAB are built on your own GitHub account. A build costs 2 tickets. The full steps are in the Guide.
Yes. Describe the app in the chat, try the live preview, then ask for an APK. Black UI is designed for small apps written in HTML, CSS and JavaScript.
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.
Your conversation history lives only in your own browser (IndexedDB), never on our servers. If you clear your browser/app data, uninstall the app, or delete a chat, it is gone for good — we have no copy and cannot restore it. Please keep anything important backed up yourself.
Yes. Every paid purchase comes with a GST invoice (Shop → Invoices in the app). Indian GST law requires the customer’s state on the invoice for online services, so we ask you to pick your state before paying — and for a personal invoice that is the only thing we store. If you need a business invoice you can optionally add your business name, GSTIN and address. Details are in the Privacy Policy.
Right now, Black UI runs on Google's free Gemini API quota for free users and Razorpay for payments (INR only), so the service is India-only for the moment. Support for other countries and currencies is planned — thanks for your patience while we get there.
Yes. The signing password you enter during a build is encrypted on your own device before it ever leaves your browser. It is not sent to our servers, and no AI model — Gemini, Claude or Groq — ever sees it. It's used only to sign your app inside your own GitHub Actions run.
APK/AAB builds run entirely on your own GitHub account and use your own GitHub Actions minutes — GitHub enforces its own usage limits there, which we don't control and can't override. If you hit a GitHub-side limit, you'll need to wait for GitHub's own reset. A Black UI ticket pays for our dashboard's build orchestration, not for GitHub's infrastructure.
Yes. Chat replies, code, images and other output the dashboard generates for you are yours to use freely — personal or commercial, with no restriction from us. The one exception is Black UI's own assets: the in-app reaction images, the Black UI logo/branding, and the site or app source code are not licensed for reuse or resale.
Groq doesn't offer a “zero data retention” toggle we can switch on, so we're not claiming one. Groq is used only for small background tasks (quick routing decisions and voice transcription) and processes that data under its own privacy policy, linked from our 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.