FLIM

A native iOS instant/disposable-camera app. Shoot now, see it later; photos hide and "develop" over time, then reveal with an instant-film look baked in at capture. Invite-only.

Stack

• SwiftUI (iOS 26 target), @Observable throughout, no ObservableObject
• AVFoundation for capture, Core Image for the instant-film processing
• Supabase: Postgres + Row Level Security, email OTP auth, private Storage bucket
• iOS 26 Liquid Glass styling app-wide
• xcodegen-managed project (project.yml is the source of truth)

Features

• Email OTP sign-in, gated by an invite allowlist; users can self-invite with a friend's code
• Full-screen camera with a film-strip picker and instant-film look baked in at capture
• Darkroom: developing placeholders, countdown, and reveal moment
• Rolls: shared friend groups via 6-char invite codes (max 50 members)
• Signature FLIM Original look: fitted 3D LUT + scene-adaptive exposure, shipped as flim.cube
• Social layer: photo feed with posts/captions, follows, reactions/comments, user pages, activity view, discovery/search, reporting + blocking (RLS-enforced, bidirectional)
• Remote push notifications (APNs via Edge Functions; local fallback on-device)
• Daily digest summarizing friends' posts instead of individual notifications

Project layout

Flim/
  Config/        Supabase client
  Models/        AppUser, Roll, Photo, FilmStock, Social
  Services/      Auth, Photo, Roll, Feed, Notification, RemotePush, InstantFilmProcessor
  Views/         Auth, Camera, Darkroom, Rolls, Profile, Feed, Main, Components
supabase/
  schema.sql     Tables, RLS policies, and RPCs
  migrations/    Idempotent SQL migrations (applied to production, mirrored in schema.sql)
  functions/     Edge Functions (send-develop-push, send-social-push, send-daily-digest)
  push/          device_tokens migration + APNs setup docs (function code lives in functions/)
web/             Invite landing page + legal site (Vercel)
scripts/         LUT fitting (fit_lut.py)
project.yml      xcodegen project definition
docs/            Release, setup and operations guides (see below)

Docs

File	What it covers
docs/APP_STORE.md	Store listing copy, release notes per version, App Privacy worksheet, App Review sign-in
docs/CRASH_TRIAGE.md	Turning a crash_diagnostics row into a file and line number, with no Apple Developer account
docs/LAUNCH_RUNBOOK.md	Launch checklist and backlog
docs/TESTFLIGHT_SETUP.md	CI, signing and TestFlight distribution
docs/UNIVERSAL_LINKS.md	Associated domains, roll invites (/join/CODE) and personal invites (/i/CODE)
docs/LUTS.md	Fitting the film look from calibration pairs
docs/PRIVACY.md	Privacy policy source

Getting started

Requirements

• macOS with full Xcode 26.x (Command Line Tools alone is not enough)
• xcodegen: brew install xcodegen

Build

# Generate the Xcode project from project.yml
xcodegen generate

# Build for the simulator
DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer \
  xcodebuild -project Flim.xcodeproj -scheme Flim \
  -destination 'generic/platform=iOS Simulator' build

Then open Flim.xcodeproj in Xcode and run on an iOS 26 simulator or device.

Supabase setup

1. Paste migrations, then run supabase/schema.sql in the SQL editor:
   • supabase/migrations/ holds paste-ready, idempotent migrations (already applied to production). Paste each into the editor and run once; they are then mirrored in schema.sql for historical reference. (New migrations get their own dated file.)
   • schema.sql is the source of truth for the full schema state (idempotent, safe to re-run). It creates the tables, RLS policies, and RPCs.
2. Create a private Storage bucket named photos and add the per-user policies documented in schema.sql.
3. Add the project URL and publishable key to Flim/Config/SupabaseClient.swift.

Photo upload pipeline

Each capture uploads three renditions to private Storage:

• full: original processed image (sRGB-tagged JPEG with ICC profile)
• thumb: small grid thumbnail
• feed: ~1400px rendition for feed cards (pixel-identical at display width, ~1/3 the egress)

All files are sRGB-tagged ICC JPEGs; access is via signed URLs (RLS-enforced per user).

Invite allowlist

FLIM is invite-only. Only allow-listed emails can request a sign-in code:

INSERT INTO public.allowed_emails (email, note) VALUES ('[email protected]', 'Name');

Remote push (optional setup)

Local develop notifications work with no backend. To enable APNs push when roll-mates' photos develop, deploy the auth key; see supabase/functions/send-develop-push/ and send-social-push/ for the Edge Function code.