Kaizen Timer vs PeakInterval

Kaizen Timer is a customizable interval timer for boxing, HIIT, Tabata, treadmill workouts, strength training, and more. Build simple work–rest intervals or create advanced multi-phase workouts that match exactly how you train. Start quickly with ready-made presets, or customize every phase, round, work period, and rest period. FEATURES • Presets for popular training styles • Fully customizable work and rest intervals • Advanced phase sequencing for complex workouts • Clear visual and audio timers • Accurate round and phase tracking • Reliable timing when backgrounded or locked • Home Screen widgets for quick access • Light and dark mode support • Optional Apple Health integration for workouts and calorie estimation • Export completed workouts • Available in multiple languages, including: English, French, German, Italian, Russian, Spanish, Japanese, Chinese BUILT FOR CONSISTENCY Set your training intensity and let Kaizen Timer handle the structure. Timers stay accurate even during interruptions, helping you stay focused through every round. FREE TO USE All Kaizen Timer features are available for free. An optional support subscription helps fund ongoing development, but subscribing is never required to access features or content. Train smarter. Stay focused. Improve every round. Terms of Use: https://kaizentimerapp.com/terms.html Privacy Policy: https://kaizentimerapp.com/privacy.html

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.