Fartlek Interval Trainer vs Phase

Build the interval workout you want. Stay on target while you train. Then learn from every session. FiT is an interval timer and training companion for runners on Apple Watch and iPhone. Create classic intervals, HIIT and Tabata workouts—or run freely with automatic Fartlek interval detection. CREATE WORKOUTS YOUR WAY Build simple work-and-rest sessions or advanced workouts with warm-ups, cooldowns, repeated sets and multiple effort levels. FiT makes even complex sessions clear and easy to follow. STAY ON TARGET Color-coded feedback shows whether you’re on pace. Spoken coaching, audio and haptic alerts help you respond without constantly checking your device—and spoken cues automatically match your chosen language. The Dual Progress Ring shows both your current interval and your overall workout progress at a glance. FARTLEK WITHOUT THE BUTTONS Switch to Fartlek mode and run by feel. FiT detects changes in your speed and automatically converts them into recorded intervals. No reaching for your device. No tapping between efforts. Just run. LEARN FROM EVERY WORKOUT See how each interval performed with detailed pace, heart rate, cadence and distance metrics. Compare workouts to understand how your performance changes over time. Personalized coaching insights use your workout data to highlight meaningful patterns and offer practical recommendations for future sessions. ADVANCED EFFORT TRACKING Advanced workouts can distinguish between sprint, hard, moderate and easy efforts, helping you create more varied sessions and analyze every effort afterwards. APPLE WATCH, IPHONE AND YOUR FITNESS APPS Train in your chosen language on Apple Watch or iPhone. Create and edit interval workouts directly on your watch, with controls for inserting, reordering and deleting interval groups. Save completed workouts to Apple Health and sync your sessions with Strava. KEY FEATURES • Flexible interval timer for running, HIIT and Tabata • Automatic Fartlek interval detection • Dual-ring live workout progress • Color-coded pace and effort feedback • Localized spoken coaching, plus audio and haptic alerts • Create and edit interval workouts on Apple Watch • Detailed pace, heart rate, cadence and distance metrics • Performance tracking for every interval • Workout comparisons and personalized insights • Sprint, hard, moderate and easy effort levels • Apple Health and Strava integration • Light and dark appearance Run free. Train smart. Learn from every session. SUBSCRIPTION TERMS FiT offers an optional auto-renewable subscription. Payment will be charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription at any time in your Apple ID account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.iubenda.com/privacy-policy/39192677

Phase is an interval timer for starting where you are, and not where you think you should be. Coming back to running? Choose a run/walk Journey that gives you something manageable today and only suggests the next step after you finish. Already know your HIIT, Tabata, EMOM, circuit, boxing, swim, or gym workout? Build it your way and let Phase handle the clockwork. # START AT A LEVEL YOU CAN HANDLE Your First Mile begins with one-minute runs and 90-second walks. After each completed session, tell Phase how it felt. If the opening session is too hard, Phase can offer something gentler, down to 15-second runs. If it feels right, stay with it. If you’re ready for more, Phase can offer one small step forward. You decide whether the plan changes. You can also work toward a continuous 5K or 10K. Journeys move by completed sessions and your feedback—not calendar weeks—so missing Tuesday doesn’t put you behind. # LET PHASE CALL THE WORKOUT Keep your hands free and your phone in your pocket. Spoken phase cues and countdowns guide the workout, including while the phone is locked, and can mix with music already playing. On screen, color and a clear “Next” preview make each transition easy to follow. Vibration adds another cue when it’s available. A call or a trip to the background won’t make the timer quietly drift. When you return, Phase checks the clock and catches up honestly. # BRING YOUR OWN WORKOUT Make a simple work/rest timer in a few taps, or add a warm-up, cool-down, repeats, and individual times and names for every round. Save a favorite once; run it again. Or start with 28 ready-made workouts for HIIT, Tabata, EMOM, circuits, boxing, running, stretching, and swimming—plus three guided running Journeys. # SEE PROGRESS WITHOUT LOSING A STREAK Phase keeps the time, distance, active days, and completed workouts you earned. There are no streaks to lose, because a rough week can’t erase work that already happened. Favorites and Collections organize your routines. History records each session. Journey Milestones preserve evidence-backed changes when completed workouts show a meaningful change. Stop early? Phase saves the time you actually trained without calling the workout complete. # THE CATCH, PLAINLY Your first 14 completed workouts are free. No card. No deadline. No automatic charge. No account. After that, Phase Unlock removes the workout limit and includes all 28 ready-made workouts, all three Journeys, unlimited custom workouts, and the current customization features for one payment. There is no subscription or recurring charge, and Phase has no ads, analytics, or “pro” tier. Your workouts, settings, Journey progress, Milestones, and history live on your phone. Export a backup whenever you want. GPS is optional for ordinary workouts. Final distance workouts in the running Journeys need it because distance is the finish line. When GPS is on, Phase calculates distance on your device, including while the phone is locked. It saves the total, not a route, and doesn’t send your location to us. Start where you are. We’ll handle the clockwork.