Last updated: March 2026

SwiftUI Boilerplate Features — Everything Indie iOS Developers Need in 2026

The Swift Kit is the best SwiftUI boilerplate for 2026. Explore every module included in this production-ready iOS app starter kit — from the centralized design system to feature flags to AI integrations.

Centralized 5-Layer Design System

• Edit one file — DesignSystem.swift — and the entire app rethemes automatically
• Five surface styles: Flat, Bordered, Elevated, Glass, and Liquid Glass (iOS 26+)
• Brand colors, spacing density, corner radius, shadows, and motion tokens
• New screens automatically inherit the design system using DS building blocks

Feature Flags

• Toggle entire modules on/off with a single boolean
• Modules: onboarding, authentication, paywall, notifications, AI features, Apple Sign-In
• Disabled features disappear completely — no broken navigation, no leftover screens
• The setup CLI configures flags during project creation

Interactive Setup CLI

• Run ./setup.sh — guided walkthrough for the entire project configuration
• Choose app name, brand colors, surface style, features, backend, and API keys
• Automatically regenerates the Xcode project — no manual file editing
• Most developers have a running app in under 5 minutes

SwiftUI Onboarding Screen Templates

• Three beautiful onboarding templates: Carousel, Highlights, and Minimal
• Animated previews with smooth SwiftUI transitions
• Full light/dark mode support with customizable design tokens
• Switch styles with a single config change

Authentication — Sign in with Apple & Supabase SwiftUI

• Sign in with Apple integration — pre-wired and ready to enable
• Email/password authentication via Supabase
• Automatic session management and token refresh
• Complete Supabase SwiftUI integration with RLS policies
• Profile setup flow after first sign-in

SwiftUI Paywall Templates — RevenueCat & StoreKit 2

• Production-ready SwiftUI paywall templates
• RevenueCat integration with StoreKit 2 — no StoreKit 2 vs RevenueCat headaches
• Subscription offerings, free trials, and restore purchases
• Entitlement management and server-side validation
• Graceful fallback to demo offerings if API key is missing

SwiftUI ChatGPT & AI Integration

• SwiftUI ChatGPT integration with streaming responses
• DALL·E image generation (gpt-image-1.5) — build an AI app in Swift
• Vision API for image analysis and understanding
• Secure Flask proxy backend for API key protection
• Completely optional — gated behind a feature flag

Supabase Backend & Database

• Full Supabase SwiftUI integration — Auth, Postgres, Storage
• Row Level Security policies pre-configured
• Edge Functions and webhooks ready
• Storage buckets for user content

Analytics, Notifications & Indie Developer Tools

• TelemetryDeck analytics — privacy-first event tracking
• Push notifications (local + APNs) with debugging inspector
• MVVM architecture with dependency injection
• Built by and for indie iOS developers who ship fast