Interval Settings
Custom Intervals
Number of Rounds
Sound Settings
Interval Features
🎨 Custom Intervals
Create up to 30 custom intervals with personalized names, durations, colors, and icons. Each interval gets a unique color and icon combination.
⏱️ Precision Timing
Set exact durations with separate minute and second controls. Accurate timing down to the second with visual progress tracking.
🌈 Color Themes
Choose from 30 beautiful color themes organized by light, medium, and dark categories including gradient backgrounds and unique styling for each interval.
😀 Emoji Icons
30 emoji icons including fire, muscle, lightning, heart, star, sports equipment, and fitness symbols make interval identification instant and fun.
🎵 Sound Alerts
Choose from 40+ notification sounds including bells, drums, electronic beats, ambient tones, and cinematic effects with preview functionality.
🔄 Drag & Drop Reordering
Intuitively reorder intervals with true drag & drop support on desktop and long-press on mobile. Visual drop zones and smooth animations guide your reordering.
⬆️⬍ Arrow Controls
Alternative reordering method with up/down arrow buttons for precise interval positioning. Perfect for accessibility and quick adjustments.
🎯 Smart Validation
Intelligent validation prevents duplicate colors and icons. System automatically suggests available options and maintains visual uniqueness across intervals.
🗂️ Expandable Details
Compact interval cards with expandable detail views. Toggle between overview and full editing mode with smooth animations and space-efficient design.
⚡ Interactive Timeline
Visual workout timeline shows entire session with progress tracking, completed intervals, and scrollable design for long sequences with overflow detection.
🔊 Sound Preview
Test any sound effect before starting your workout. Enhanced preview button with visual feedback and playing state indicators for confident sound selection.
🔄 Multi-Round Support
Run your custom interval sequence for up to 20 rounds with automatic progression and smart naming for repeated intervals.
💾 Auto-Save Settings
All custom intervals, colors, icons, sound preferences, and timer settings automatically save and restore between sessions with debounced saving.
🎛️ Advanced Controls
Pause/resume functionality, stop with confirmation, visual progress bars, and comprehensive timer state management for complete workout control.
🏃♂️ Flexible Training
Perfect for running intervals, cycling, cardio, HIIT, Tabata, or any training requiring alternating between different intensity periods and activities.
📱 Mobile Optimized
Responsive design with touch controls, compact interval cards, custom scrollbars, long-press drag support, and optimized display for any device size.
📊 Comprehensive Tracking
Real-time progress bars, total elapsed time, remaining time, next interval preview, completion summary with workout statistics, and current interval highlighting.
🎯 Touch-Friendly Interface
Optimized touch targets, haptic feedback on supported devices, long-press gestures, and mobile-first interaction patterns for seamless mobile experience.
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