PeakInterval: HIIT Timer

PeakInterval is your focused interval timer and training companion. Start with a simple timer, or build a routine with optional Peak Plus. No account. No ads.

YOUR ORIGINAL TOOLS STAY FREE
• Japanese walking, HIIT, Tabata, run/walk, sprints, focus blocks and mobility
• Unlimited basic custom timers with Quick Build and individual interval editing
• Spoken interval names, sound cues, countdown beeps and haptics
• Lock Screen Live Activities and Dynamic Island
• Apple Watch companion to start, pause, skip and stop the timer on your paired iPhone
• Full local workout history, lifetime minutes and day streak

GO FURTHER WITH PEAK PLUS
• Four progressive programs: Walking Foundations, Run / Walk Journey, Bodyweight Basics and Mobility Reset
• 66 program sessions across 4–8 week plans, with completion tracking
• 24 additional interval workouts for walking, running, HIIT and mobility
• Daily workout variations generated locally for your selected goal, level and time
• A training calendar with optional local workout reminders
• Weekly workout and minutes goals, 7- and 28-day trends, effort balance and milestone badges
• Circuit Studio: named exercise circuits, EMOM, boxing rounds and pyramid intervals
• Favorite Plus workouts, export and import timer files, and export history as CSV

MOVE AT YOUR OWN PACE
Choose gentle, steady or challenging intervals. Preview programs before subscribing, repeat a week when needed and leave room for recovery. Workout suggestions are general timing templates, not medical advice or individual coaching.

PRIVATE BY DESIGN
Your timers, training preferences, calendar and history stay on your device. Daily variations use local rules, not a remote AI service. You control exported files and optional notification permission. Apple handles subscription purchases.

OPTIONAL SUBSCRIPTIONS
Peak Plus is available as a monthly or annual auto-renewing subscription. Both plans unlock the same features while active. Prices and billing periods are shown in the app before purchase. Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled before renewal. Manage or cancel in your Apple Account subscription settings. Restore Purchases is available in Settings and on the Peak Plus screen. All original free features remain available without a subscription.

Privacy: https://oanarinaldi.com/peakintervalprivacy.html
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Requires iOS 17 or later. Apple Watch companion requires watchOS 10 or later and a reachable paired iPhone.