Burst was an iOS writing coach for X, Reddit, LinkedIn, and Medium. It guided users from a rough idea to a draft and returned structured feedback on the draft they wrote.
Approach
Most AI writing tools generate the post. Burst deliberately didn’t: it scored the user’s own draft and limited feedback to a few prioritized suggestions, so the writing stayed theirs.
- Guided questions to narrow an idea into a platform-specific draft
- Draft review covering clarity, structure, tone, and platform fit
- Separate guidance for each supported platform
Stack
- Expo and React Native with Expo Router, Sign in with Apple, secure storage, and RevenueCat
- Next.js for the API and public site
- Vercel AI SDK with OpenAI for schema-validated feedback
- PostHog LLM tracing and Upstash Redis