Social App Boilerplate for iOS: Auth, Profiles, and a Supabase Backend

The three pieces every social MVP needs before it's even social

Before a single post, like, or follow exists, a social app has to do three boring things flawlessly. Users have to sign in. Each user needs a profile — a display name, an avatar, a bio — that they own and can edit. And that profile has to be the same whether they open the app on their iPhone today or a new device next month. The Swift Kit ships exactly this layer assembled: Supabase auth backs the accounts, a Postgres profiles table backs identity, and Supabase storage holds avatar images. None of it is glued together at the last minute by you on a Sunday night.

• Sign in with Apple and email auth wired to Supabase, not stubbed
• A profiles table in Postgres keyed to each authenticated user
• Avatar upload backed by Supabase storage, not a placeholder image
• Profile data that follows the user across devices because it lives server-side, not in UserDefaults

Why Supabase is the right backend for a social graph

Social data is relational by nature: a user follows other users, a post belongs to an author, a like joins a user to a post. That is a Postgres-shaped problem, and Supabase gives you real Postgres with row-level security instead of a document store you'll fight later. The Swift Kit already routes auth, profile reads, and storage through Supabase, so when you add a follows table or a posts table you're extending a database that's already in place — not standing up infrastructure from zero. Edge Functions handle anything you don't want on the client, like rate-limiting who can post or proxying keys, so abuse controls have a home before your app gets popular enough to need them.

What you build on top — and what you don't get for free

The honest framing: this is a social MVP foundation, not a finished social network. The Swift Kit hands you accounts, profiles, and the backend; the actual social product — the feed, the follow graph, the post composer, notifications when someone interacts with you — is yours to design. That's a feature, not a gap: the parts that make your app distinct shouldn't come pre-baked from a template. What the kit removes is the four-to-six weeks most indie founders lose to auth edge cases, profile sync bugs, and storage configuration before they ever ship something users can sign up for.

• You build: the feed, follows/followers, posts, comments, likes
• You build: in-app notifications and any messaging layer
• You get for free: auth, sessions, profiles, avatar storage, key-proxying Edge Functions
• You get for free: a centralized DesignSystem.swift so every social screen shares one look

From clone to a signed-in user with a profile

Setup is an interactive ./setup.sh CLI: you name the app, pick colors and one of five surface styles, toggle the modules you want (auth and Apple Sign-In stay on for a social app; you can switch off the paywall while you're pre-revenue), and drop in your Supabase keys. Onboarding ships in three styles so the first-run experience that introduces a new social user to your app is configured, not coded from scratch. Within a working session you can have a real person create an account, set a display name and avatar, close the app, reopen on another device, and find their profile waiting — which is the actual starting line for building anything social.

Swift Kit vs. building the social foundation from scratch

Frequently Asked Questions