Descriptions:
Bart Slodyczka walks through building two mobile-first applications using Replit’s new mobile app builder, targeting developers who want to ship to iOS and Android without deep native framework knowledge. The key workflow starts by selecting “mobile app” in Replit before prompting the agent, which causes it to default to the Expo Go framework — enabling cross-platform deployment and direct phone previewing via QR code during development.
The first project is an invoice processing app that uses the Claude API to extract structured data from uploaded invoice photos and populate a table. The second is a regional sales dashboard connected to a live Supabase database, where Bart demonstrates a useful prompting technique: pasting sample SQL rows directly into the prompt so Replit understands the data schema and column types without needing direct database access. He specifies known variable values — five sales regions — that the agent would otherwise have to guess.
A candid debugging segment shows the invoice upload feature silently failing on first deployment. Bart feeds the error back to the Replit agent, which diagnoses a missing Supabase URL and anon key, resolving it after credential injection. The video also covers Replit’s native object storage for saving invoice images, built-in user authentication, and the simplified three-click App Store and Google Play deployment process through Expo Go — making this a practical end-to-end guide for non-native mobile developers.
📺 Source: Bart Slodyczka · Published January 30, 2026
🏷️ Format: Hands On Build
