Get fit with science-backed interval training—no gym required.
Intensity makes interval training simple and effective. Whether you're walking around the block, running your first 5K, cycling to work, or doing bodyweight exercises at home, we'll guide you through proven workouts that get results in less time.
Choose from 40+ ready-to-go workouts or create your own. Just press start and let the app coach you with voice cues, countdown beeps, and visual feedback.
WHAT YOU GET:
• 40+ Ready-to-Go Workouts – From beginner-friendly walks to advanced HIIT, running, cycling, rowing, and strength training
• Voice Coaching – Real-time announcements guide you through every interval in 22 languages
• Apple Watch Support – Full app on your wrist with heart rate tracking and haptic feedback
• Apple Health Integration – Automatically records calories, distance, steps, and heart rate
• Live Activity Widget – See your workout progress on your lock screen
• Create Custom Workouts – Build unlimited interval sequences that match your fitness level
• Workout History – Track every session with detailed metrics
• Smart Audio – Countdown beeps and cues that automatically lower your music
• Background Mode – Keep your screen off while the workout runs
• Cloud Sync – Your workouts and settings stay in sync across all your devices
• Export to Apple Workouts – One-tap transfer to Apple's native Workout app
WORKOUTS FOR EVERYONE:
Beginners: Start with gentle intervals like Couch-Lite or Japanese Interval Walking
Runners: Build speed with Yasso 800s, 10-20-30, or Norwegian 4×4
Cyclists: Boost power with Seiler 4×8 or Little 60/75
HIIT Fans: Crush Tabata, Scientific 7-Minute, or Sprint 8
Anywhere Training: Rowing, boxing rounds, stair climbs, jump rope, and more
Every workout is based on exercise science research. No guesswork—just proven protocols that deliver results.
Download Intensity and discover how effective your workouts can be.
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Privacy Policy: https://velocityraptor.co/app-privacy
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
Bug fixes and stability improvements.
Version 1.0.3
The developer, Velocity Raptor Incorporated, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary based, for example, on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Larger Text
Dark Interface
Differentiate Without Colour Alone
Information
Provider
Velocity Raptor Incorporated
Size
43 MB
Category
Health & Fitness
Compatibility
Requires iOS 26.0 or later.
iPhone Requires iOS 26.0 or later.
iPad Requires iPadOS 26.0 or later.
Mac Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
