HIIT Fitness

Train harder, recover smarter, and stay accountable, all in one app. HIIT is a complete training companion built for high-intensity interval training and triathlon. Whether you're doing your first session or preparing for race day, your AI coach is with you at every step: answering questions, recommending workouts, helping you plan your week and keeping you on track with your goals. YOUR AI COACH Chat naturally with a coach that knows your training. Ask for a workout suggestion, log a meal by simply describing it, set a goal, or get help planning your schedule. Your coach checks in with purpose. No spam, no noise. BUILT FOR TRIATHLON Plan your race on your iPhone by setting swim, bike and run distances, then send it straight to your watch. On race day, start from your wrist, advance through each leg, and finish with a full summary including per-leg splits. APPLE WATCH WORKOUTS Send any workout to your Apple Watch and train phone-free. Live timers, workout mirroring, and completion celebrations, with your session syncing back to your iPhone automatically. WORKS WITH GARMIN Using a Garmin device? Our Connect IQ app brings your training to your Garmin watch too, so you can train with the device you already own. GPS ACTIVITY TRACKING Track runs, rides and walks with live distance, pace and route mapping. When you finish, get a beautiful route card ready to share. NUTRITION MADE SIMPLE Log meals in seconds by chat, search or quick add. See your calories and macros at a glance on the nutrition dashboard, and get meal ideas that fit your preferences. TRACK YOUR PROGRESS Connect Apple Health to see your steps, sleep, heart rate and workouts in one place. Log your weight and measurements, review your body scan history, and watch your consistency build over time. SHARE THE EFFORT Turn every session into a share-worthy moment. Generate route cards, stats cards and story-format cards for social media, or post straight to the in-app community feed. Cheer on others, join in, and keep each other showing up. EARN IT Streaks, milestones and badges reward the thing that matters most: turning up again and again. Important: HIIT is not a medical device and does not provide medical advice. Coaching content is AI-generated and for informational purposes only. Always consult a qualified professional before starting a new exercise or nutrition programme, particularly if you have an existing health condition. Apple Health integration is optional and your health data is only used with your permission.