One AI app, shipped on iOS, Android and the web.
ChatUp puts the top AI models, tools and assistants in one app. We built the native iOS and Android apps, the web app, and the backend that runs all three.
- Product
- AI chat and creative tools
- Platforms
- iOS, Android and web
- Payments
- App Store, Google Play, Stripe
7
AI companies’ chat and video models in one app: OpenAI, Anthropic, Google, xAI, DeepSeek, ByteDance and MiniMax
The problem
Too many AI apps, too many subscriptions.
The best chat model, the best image model and the best video model usually come from different companies. That means separate apps, separate accounts and separate bills.
ChatUp puts them in one place, with one account that works on your phone and your computer.
What we built
Three apps and one backend.
The iOS app
A native SwiftUI app with saved chat history, Sign in with Apple, a share extension and push notifications. Chats show formatted text, math and diagrams.
The Android app
A native Kotlin and Jetpack Compose app that brings the iOS features to Android, with Google sign-in.
The web app
Built with Astro and React, so people can use ChatUp on a computer too.
One backend for all three
A Go service handles sign-in, chat streaming, files, memory, credits and subscriptions for every platform. It talks to each AI company, so the apps don’t have to. The apps get their model list from it, so a new model can go live everywhere at once.
The AI features
Chat with models from OpenAI, Anthropic, Google, xAI and DeepSeek. Make images, animate photos, make videos and music, summarize YouTube videos, search the web, or talk to ChatUp out loud. 19 built-in assistants help with things like cooking, travel and studying.
Subscriptions and payments
In-app purchases through the App Store on iOS and Google Play on Android, and Stripe on the web. Every purchase lands in one record on the backend, and web purchases can be claimed inside the phone apps.
Where it ended up
Live on the App Store, Google Play and the web.
The first iOS commit landed on July 11, 2026. ChatUp went live on the App Store on August 17, about five weeks later.
See the site
Where to find ChatUp.
Want something like this built?
Tell us what you want to build. We’ll tell you how we’d build it.