Khushoo

Cross-platform prayer tracking with live social widgets. Postgres triggers fire silent pushes that refresh native iOS and Android widgets in near-real time. Private launch 2026.

• ▸Live-widget pipeline: a Postgres trigger on prayer_logs invokes a pg_net.http_post edge function, dispatching silent pushes that wake peers' apps and refresh native iOS and Android widgets in near-real time.
• ▸Offline-first sync with SQLite as local source of truth and Supabase as cloud backend. Optimistic UI via React Query, retry-aware sync queue (max 5 attempts per item), and debounced profile writes for unreliable networks.
• ▸6 native iOS widgets in Swift / WidgetKit and 10 Android widgets via react-native-android-widget, sharing data across app and widget targets through an App Group store and a custom Expo native module.
• ▸Diagnosed an Apple AppIntents release-build constraint (reflection only inspects public types per WWDC23) that unblocked the entire interactive-widget feature after two days of tracing.
• ▸Supabase Auth, Postgres RLS, and Realtime for social 'Circles', instrumented in production with PostHog and Sentry.

FATTYS

Cross-platform beauty marketplace with an AI skincare consultation built on AWS Bedrock. Selfies stream into Claude Sonnet 4.6 through a Supabase Edge Function, which writes back personalized routines and catalogue-grounded product picks over Server-Sent Events. Private beta 2026.

• ▸AI consultation pipeline: a Supabase Edge Function (Deno + aws4fetch) fronts the Bedrock Converse API and relays Claude Sonnet 4.6 token-by-token over SSE to the app, with prompt caching (1h on system + tools, 5 min on history, max 4 cachePoints) holding per-consult cost under $0.05 and turning $200 of credits into a 5,700-consult runway.
• ▸Zero-storage selfie flow: explicit consent that selfies are sent inline for inference and never persisted server-side. Diagnosed an ap-south-1 Bedrock constraint where Claude 4.6 is only available through the global inference profile (global.anthropic.claude-sonnet-4-6); surfaced the cross-region transit in the consent string rather than hiding it.
• ▸Atomic checkout RPC: a single create_order_transaction Postgres function resolves prices and discount codes server-side, locks variants, and writes the order + items + status history in one transaction. Idempotency keys (Crypto.randomUUID()) protect against double-charges from network retries.
• ▸Realtime order + shipment tracking: Supabase channels stream shipments and tracking_events to the app with optimistic UI and snapshot rollback via React Query, so customers see status changes the moment an admin moves them, no pull-to-refresh required.
• ▸Hardened session storage: Supabase Auth JWTs are chunked into expo-secure-store to clear the 2 KB iOS SecureStore ceiling, on top of a PKCE-flow magic-link path and a handle_new_user Postgres trigger that seeds public.users from signup metadata in the same transaction.
• ▸Guest-to-user cart merge: cart hydrates from AsyncStorage and Postgres in parallel, then on sign-in the merge_guest_cart_to_user RPC reconciles a guest session_id cart into the authenticated user_id cart server-side and stays live across devices via Supabase Realtime.

Recello

A used-phone marketplace built for Pakistan. List a device, browse by brand, and chat sellers in real time.

• ▸Onboarding, auth, feed, search, saved items, and listing detail built with Expo Router + TypeScript.
• ▸Multi-image upload with client-side compression and a responsive gallery for smooth browsing.
• ▸Modular, theme-aware design system on NativeWind for consistency at scale.
• ▸Supabase for auth, storage, and realtime messaging, secured by RLS and typed PostgREST.