iOS Boilerplate for SaaS Apps — Recurring-Revenue Infrastructure, Done

SaaS is a billing problem wearing an app costume

The hard part of a SaaS app is rarely the feature — it is the subscription state behind it: free trials, monthly vs annual tiers, who is entitled to what, what happens on cancel or refund, and keeping all of it in sync with your backend. The Swift Kit ships that machinery wired through RevenueCat and Supabase, so the question you answer is product strategy, not billing edge cases.

• Multi-tier paywall (free / premium / pro) with RevenueCat entitlements
• Entitlement gating helpers — check access before showing a feature
• Supabase auth, Postgres database, and storage for account state
• Server-side rate limiting via Edge Functions for metered features
• Analytics to watch trial-to-paid and churn

Entitlements that match your tiers

SaaS pricing is rarely one switch. The kit's gating helpers map cleanly to multiple tiers, so a feature can require 'premium', a higher limit can require 'pro', and free users see the right upgrade prompt. Because entitlements come from RevenueCat, your app trusts a single source of truth for who can do what.

Account state that survives the real world

Users switch devices, restore purchases, cancel and resubscribe. The Swift Kit wires Sign in with Apple and Supabase auth to RevenueCat identity, so a paying user stays paying across reinstalls and devices — the unglamorous correctness that keeps support tickets and refunds down.

Meter the expensive stuff, protect your margin

If your SaaS calls an API per action (AI, search, processing), unmetered free users can quietly drain your margin. Server-side rate limiting in Supabase Edge Functions enforces per-user quotas and triggers the paywall at the limit, so cost scales with revenue instead of against it.

The Swift Kit vs assembling SaaS infrastructure yourself

Frequently Asked Questions