Praiser

iOS and web platform for logging and visualizing chronic pain.

[swift, next.js, express, supabase, scenekit, three.js, cloudflare]

overview

iOS app uses SceneKit for 3D pain point placement on a human body model. Web app built with Next.js using server-side rendering, Three.js for 3D visualization, and Supabase for auth and data. Express API serves as middleware between iOS and Supabase. Hosted on Cloudflare Tunnel.

challenges

Building an intuitive 3D body model for pain point placement on mobile
Keeping pain data in sync across iOS and web with offline support
Migrating the web app from client-side to server-side rendering
Designing a doctor-patient workflow with role-based access

solutions

SceneKit with quaternion-based trackball rotation, axis-locking, and haptic feedback
Offline sync queue with automatic retry using Network framework, Supabase for real-time sync
Hybrid RSC + client component architecture, modularized data layer for tree-shaking
Supabase Auth with invite flow, RLS policies, and server-side permission checks

learnings

SceneKit 3D interaction — quaternion rotation, gesture handling, sphere placement
SwiftUI architecture patterns — @EnvironmentObject, dependency injection
Next.js SSR migration — hybrid RSC + client components
Three.js 3D visualization in React
Supabase Auth with role-based access and RLS policies
Offline-first patterns with sync queues

future

Revive as a simplified logging-only app

Contributions

iOS

3D body model with SceneKit — trackball rotation, axis-locking, sphere placement/editing
Full UI redesign following Apple HIG (auth, tabs, pain log, history, settings)
Offline sync queue with automatic retry
Architecture refactor to proper SwiftUI patterns

Web

Next.js app with SSR migration from client-side rendering
Three.js 3D pain visualization
Sidebar navigation, theming, doctor invite flow
Modularized data layer and API cleanup
Database schema design for pain sessions

API

Express server with session/user routes and auth middleware

Infrastructure

Cloudflare Tunnel hosting
Supabase configuration and RLS policies