Interval Walk - Japanese IWT

Batuhan Eren Engin · Health & Fitness

4.5 2 ratings Free

Independent analytics for this App Store listing. AppTracker is not affiliated with Batuhan Eren Engin.

Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Oct 11, 2026
New version 1.24 → 1.25

New Indoors card: it explains what the treadmill speed does, turns on indoor walking with one tap and shows both speeds. It opens straight from the in-app event.

Oct 7, 2026
New version 1.23 → 1.24
Oct 6, 2026
New version 1.22 → 1.23
Oct 5, 2026
New version 1.21 → 1.22
Oct 1, 2026
New version 1.20 → 1.21
Sep 28, 2026
New version 1.19 → 1.20
Sep 27, 2026
New version 1.18 → 1.19
Sep 25, 2026
Rating ★ 5 → 4.5
Sep 25, 2026
New version 1.17 → 1.18
Sep 23, 2026
New version 1.16 → 1.17
Sep 20, 2026
New version 1.14 → 1.16
Sep 18, 2026
Rating ★ 0 → 5
Sep 17, 2026
New version 1.13 → 1.14
Sep 14, 2026
New version 1.12 → 1.13
Sep 12, 2026
New version 1.11 → 1.12
Sep 11, 2026
New version 1.10 → 1.11
Sep 9, 2026
New version 1.9 → 1.10
Sep 8, 2026
New version 1.8 → 1.9
Sep 7, 2026
New version 1.7 → 1.8
Sep 3, 2026
New version 1.5 → 1.7
Sep 2, 2026
New version 1.4 → 1.5
Sep 1, 2026
New version 1.3 → 1.4
Aug 31, 2026
New version 1.1 → 1.3

Price & rating history · US

Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.

Average rating history over the observed period. 0 2 4 Sep 17 Sep 24 Oct 1 Oct 8 Oct 15

Average rating · ★ 4.50 now · 2 changes on record

Screenshots

About

Ayumi brings the Japanese interval walking method (IWT) to iPhone and Apple Watch: 3 minutes fast, 3 minutes slow, repeated 5 times. Based on research from Shinshu University in Japan, this simple protocol has been shown to improve aerobic fitness, leg strength and blood pressure more effectively than walking at a single steady pace. HANDS-FREE INTERVALS Your iPhone vibrates and chimes at every phase change. Turn on spoken cues and it names the phase as well, then tells you when the walk is done. Press start and walk. YOUR WEEK, SUMMED UP The week closes on Sunday evening and its summary is ready. One page shows how many days you walked, the week's standout walk, how long your heart rate stayed in each zone, the time of day you walk, and the one thing that changed since last week. YOUR PROGRESS, TRACKED Every walk is saved automatically. Browse your full history grouped by day, and see a 7-day activity chart, a 6-month trend, your pace split, your daily streak and your weekly goal. READ YOUR HEART RATE Walk with a chest strap or your watch and you see the peak of every fast phase, the average of the fast and slow phases, and the time spent in each zone. BADGES Road, Rhythm, Horizon and Season measure four different things. They level up as you walk, and they slip back if you stop. ALSO ON APPLE WATCH The Apple Watch app runs on its own, so you can leave your phone at home. Live heart rate, a heart-rate zone chart and a post-walk summary. SAVES TO APPLE HEALTH Your walks are stored as workouts in Apple Health. PRIVATE BY DESIGN No account, no tracking, no ads. Everything stays on your device. FIRST 7 DAYS FREE Everything is free for the first 7 days. Cancel before the trial ends and you pay nothing. Then continue monthly, every 6 months or yearly; the 6-month plan covers the whole five-month journey. If you would rather not subscribe, the one-time lifetime option is still there. Available in English, Turkish, French, German, Dutch, Italian, Spanish, Portuguese, Swedish, Danish, Norwegian and Finnish. Ayumi is a fitness tool and does not provide medical advice. Talk to your doctor before starting a new exercise routine. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

What's new · 1.25

New Indoors card: it explains what the treadmill speed does, turns on indoor walking with one tap and shows both speeds. It opens straight from the in-app event.

Details

ReleasedAug 2026
UpdatedAug 2026
Version1.25
Size9.9 MB
RequiresiOS 16.0 or later
Age rating4+
LanguagesEnglish, Turkish
PriceFree
Categories Health & Fitness
Bundle IDcom.erengn.intervalwalk