Interval Walking Timer vs FastOn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interval Walking Timer
This app provides a simple timer for interval fast walking routines, automatically switching between slow and fast walking every 3 minutes. It offers real-time tracking of heart rate, distance, and time, with Apple Watch vibration notifications for mode changes. A summary screen displays post-workout metrics, and users can control music playback directly from the app.
- Interval timer for fast walking
- Automatic mode switching (slow/fast walk)
- Apple Watch vibration notifications
- Real-time heart rate, distance, and time display
- Post-workout summary with key metrics
- Music and podcast playback control
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Simple timer for interval fast walking. It switches between slow walking mode and fast walking mode every 3 minutes. The Apple Watch vibrates to notify you when it is time to switch modes. Heart rate, total time, and total distance are displayed in real time, so you can monitor your current heart rate and adjust your walking speed to meet your target heart rate. Features: ・Simple timer for interval fast walking. ・Switch between slow walking mode and fast walking mode every 3 minutes. ・When the mode is switched, Apple Watch vibrates to notify you. ・Displays heart rate, total distance, and total time in real time. ・When finished, a summary screen is displayed, showing total time, total distance, total energy, average heart rate, and maximum heart rate. ・The Pause button can be used to pause the program. ・When starting, you can select whether to start in slow walk mode or fast walk mode. ・Slide the screen to the right to control music and podcasts.
FastOn
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A fasting timer that lets you see what's happening inside your body — even without opening the app. FastOn helps you keep a 16-hour intermittent fast with a clean, focused timer. It works fully offline, needs no account, and keeps all your data on your device. VISUALIZE YOUR FAST As time passes, FastOn shows what's happening inside your body in real time: Digesting → Blood sugar → Fat burning → Ketosis → Autophagy → Growth hormone → Deep repair It's not just a countdown — knowing "fat burning starts soon" is what keeps you going. Tap any stage to learn the science behind it and what benefits to expect. FREE FEATURES - Start/stop a fast in one tap (backdate from your last meal) - Circular timer + real-time body stage - 16:8 plan - Streak tracking - Last 7 days of history - Water intake tracker - Mood & energy self-logging - Confetti celebration + SNS share card on completion PREMIUM - All plans (18:6 / 20:4 / OMAD / 5:2 / Custom) - Home screen Widget + Live Activity (remaining time & stage on Lock Screen and Dynamic Island) - Full statistics + insights - AI Advice (personalized tips based on your fasting patterns) - Weight tracking + goal weight line + HealthKit - 20 badges / achievements with categories - CSV data export - Eating window end & streak crisis notifications - No ads NOTE This app does not provide medical advice. Body-stage information is a general guideline based on common scientific knowledge and varies by individual. If you have a medical condition or are pregnant, please consult your doctor. SUBSCRIPTION - Monthly ¥480 / Yearly ¥2,900 (yearly includes a 7-day free trial) - Payment is charged to your Apple ID at confirmation. - It renews automatically unless auto-renew is turned off at least 24 hours before the end of the period. - Manage or cancel in Settings > Apple ID > Subscriptions. Terms of Use and Privacy Policy are available in the app settings and from the store links.
Screenshots
Verdict
The clearest difference is in-app purchases: Interval Walking Timer at none against FastOn's 3. Interval Walking Timer also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). FastOn's advantage is update cadence (every 3 days vs every 14 months). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. FastOn sells 3 in-app purchases, starting at $2.99 per month. Interval Walking Timer asks for nothing beyond the download.
Interval Walking Timer ships an update every 14 months, FastOn every 3 days. The most recent releases landed on October 8, 2026 and September 21, 2026 respectively.
| Parameter | Interval Walking Timer | FastOn |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 14 months | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Takahiro Nakagawa | Masahiro Akebi |
In-app purchases
Interval Walking Timer
No in-app purchases
FastOn
- Premium (Monthly)$2.991 Month
- Premium (Yearly)7 Days trial$17.991 Year
- Premium (Lifetime)$22.99
Questions
Is Interval Walking Timer free?
Is FastOn free?
Do Interval Walking Timer or FastOn have ads?
Which is updated more often, Interval Walking Timer or FastOn?
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