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Razz AI – Flutter AI Photo, Video & Rap Song Generator App
Razz AI is a cross-platform Flutter app (iOS & Android) that turns photos into AI-generated images and videos via 28+ one-tap templates or custom prompts, and transforms chat screenshots into shareable rap songs with karaoke-style playback. Built end to end: Flutter UI with onboarding, paywalls, camera flows, theming, and 5 languages; a Firebase backend (Auth, Firestore, Storage, TypeScript Cloud Functions) orchestrating Fal.ai, Gemini, and ElevenLabs Music; RevenueCat subscriptions and credit bundles backed by a server-side credit ledger, secure webhooks, and PostHog analytics.
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As lead engineer + designer on the Tempo Agent+ team partnering with Novii, I designed and built the mental wellness mobile app that helps users clarify their values and set intentional goals through guided self-reflections and personalized planning tools.
Wedding guestbooks are static — a few written lines that sit in a drawer for years. I wanted something the couple would actually come back to: the real voices of the people they love.
Guests scan a QR code, record a voice message (up to 2 minutes), and the couple gets a private, password-protected dashboard to listen to every message after the wedding.
A real audio keepsake instead of words on paper.
Workflow:
Started in Figma Make with a guidelines.md defining the full design system upfront colors extracted directly from the couple's wedding invitation, typography (Pinyon Script + Alice), screen structure, and copy. Iterated screen by screen with the Make agent to generate all 5 core screens.
Then moved into Claude to make it production-ready: fixing MediaRecorder/getUserMedia quirks across iOS Safari and Android Chrome, adding glassmorphism so the watercolor background shows through the UI, and making every button thumb-friendly for a room full of guests on their phones.
Deployed live on Netlify, with a custom QR code ready to print for the big day.
Built for my friends Kamila & Roland's wedding. The template is fully reusable for any couple.
Check the link 🔗
such a great concept
:As Co-Founder and CEO of Tempo, a YC-backed company, I designed and built our all-in-one workspace for software teams that combines design, code, project management, and AI-powered development in one tool.
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