Kasira · App
Indonesian retail POS · Flutter + Supabase
Problem
Indonesian retail (warung, toko, café, restaurant) is underserved by point-of-sale software designed elsewhere. The brief Kilat Labs set itself: a mobile-first POS native to Bahasa Indonesia, priced and engineered for small Indonesian merchants, with offline-friendly UX and the calm aesthetic of a flagship consumer product rather than a B2B utility.
Process
Built end-to-end in-house. Flutter on the surface (mobile + web from the same codebase), Supabase for Postgres + Auth + Row-Level Security on the backend, Riverpod for state, GoRouter for navigation. Money is handled as `int` IDR throughout. No decimals, no rounding errors. Database triggers do real work server-side (order numbering, stock decrement, customer stats) rather than living in the client. Phase 3 added WhatsApp receipt sharing via `wa.me` deep-links, SMS fallback and Midtrans payment integration. Design system is SumUp-inspired: vibrant green for money, ink-black for primary CTAs, generous whitespace, tightly-tracked numerals.
Outcome
In active development. Kasira is Kilat Labs' flagship in-house product, the clearest proof of what the studio ships when it owns the whole stack end-to-end, from product strategy and backend through to the surface on a merchant's phone. Where most of our case studies are agency engagements, this one is ours top to bottom. Walkthroughs and demo builds shared on request at info@kilatlabs.com.
Want a deeper walkthrough?
Some of our work stays private until clients are ready. Reach out and we'll share live builds, metrics and screens that aren't on the public case study yet.
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