Brevio | Breathing Exercise App Template - SwiftUI

Brevio – Breathing Exercise and Relaxation App

A calming, fully offline breathing exercise app built with SwiftUI. Guide users through Box Breathing, 4-7-8, coherent breathing and custom patterns with animated visuals, haptics, synthesized soundscapes and progress insights.

Demo Instructions

Brevio is a fully offline app – no login and no demo credentials are required. Open Brevio.xcodeproj in Xcode, pick any iOS 17+ simulator or device and press Cmd+R. Every feature works immediately out of the box.

Everything the App Does

• Animated splash screen with custom vector logo
• 3-page onboarding flow with skip button and animated illustrations
• Home screen with animated pulsing breathing illustration
• 4 standard breathing presets: Box Breathing 4-4-4-4, 4-7-8, Calm 5-5, Deep Relax 4-2-6
• Create custom breathing patterns with a visual timeline editor
• Per-phase sliders for inhale, hold, exhale and second hold (0-15 seconds)
• Duplicate name validation with inline error messages
• One-tap delete for custom presets with smart selection fallback
• Session duration picker: 1, 3 or 5 minutes
• Immersive full-screen breathing session with dynamic phase colors
• Animated multi-layer breathing circle with smoothstep easing
• Live phase label with per-phase countdown
• Session countdown timer and gradient progress bar
• Pause, Resume and End session controls
• Completed cycle counter
• Animated session-complete celebration screen with auto-dismiss
• Insights dashboard: daily streak, total minutes breathed, completion rate
• Weekly activity bar chart powered by Swift Charts
• Recent sessions history list with relative dates
• Swipe-to-delete history entries
• Insights empty state with calming illustration
• CoreHaptics feedback: continuous inhale and exhale haptics, hold pulses, success notification
• Real-time audio synthesis with AVAudioEngine: calming drone and ocean waves soundscapes
• Synthesized singing-bowl transition chimes on every phase change
• Soundscape volume slider
• Haptics toggle and transition chimes toggle in settings
• Appearance mode: System, Light or Dark
• Send Feedback mailto support link with clipboard fallback
• SwiftData persistence for presets and complete session history
• Automatic seeding of standard presets on first launch
• Full dark mode support with an adaptive design system
• VoiceOver accessibility labels on the breathing visualizer and timers
• Audio interruption handling (calls, Siri) with automatic resume
• One-file re-skin: every color lives in Color+Theme.swift

Technology

• Language: Swift 5 with SwiftUI
• Minimum iOS version: 17.0
• Data persistence: SwiftData (presets + session history)
• Charts: Swift Charts framework
• Haptics: CoreHaptics (continuous + transient patterns)
• Audio: AVAudioEngine real-time DSP synthesis, no audio files needed
• Architecture: Views / Models / Managers / Components / Engine
• Third-party dependencies: none, 100% native frameworks
• Backend / login: none, fully offline app

What the Buyer Gets

• Complete Xcode project source code (SwiftUI, iOS 17+)
• Clean, commented code organized by feature
• App icon (1024px) and accent color assets
• Full buyer documentation with screenshots: setup, re-skinning, customization and App Store submission
• Free future updates of the template

Development Disclosure

Portions of this template’s source code were developed with AI-assisted tools and were reviewed, tested and finalized by the seller.

Please Note

This item is template source code, not a compiled app. Basic Xcode knowledge is required to build, customize and publish it. You will need an Apple Developer account to submit to the App Store.