Comparison

Just Walk vs Fasting Mastery

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Just Walk

This app guides you through interval walking using haptic cues on your Apple Watch, helping you maintain target paces without needing to look at your phone. It offers a 4-week adaptive program, tracks real-life brisk walking, and provides insights into your progress and consistency.

Highlights
  • Haptic interval coaching
  • Adaptive 4-week program
  • Automatic real-life walk crediting
  • Progress and consistency tracking
  • Forgiving daily step streaks
  • Heart-rate guided Fat Burn Zone walks
  • Post-meal walks
Features
Read full description

The Japanese interval walking method, coached from your wrist. Three minutes fast, three minutes slow. It's almost impossible to pace correctly on your own. Just Walk is the coach: haptic cues on your Apple Watch keep your fast intervals actually fast, without audio, without looking at your phone. WHAT MAKES JUST WALK DIFFERENT • CADENCE COACHING — Live steps-per-minute with a target band for every fast interval. Fall off the pace and your wrist tells you. Hit it and you'll know. • A SCREEN YOU READ AT A GLANCE — When you do look, the whole screen is the stretch you're in: green for fast, blue for slow, with a tide that rises as it runs and a countdown into every change. In fast stretches, a dot swings at your target pace. Your Lock Screen and Dynamic Island carry the same colour, the time left and what's next. • SEE HOW IT WENT — After an interval walk, a chart shows each fast stretch against your pace band, with one plain sentence that sums it up. • THE 4-WEEK PROGRAM — Start at 3 cycles, and the plan adapts to how you actually walk: finish strong and it levels up; struggle and it repeats the week. Miss a day? The program waits for you. • WE NOTICE REAL LIFE — Walked briskly to the train for 14 minutes? That counts. Just Walk credits walking you did without opening the app. • HOW IT'S GOING — Two honest numbers. Showing Up counts the walking you did. Ease watches whether walks are getting easier for your body — compared to one person only: you, weeks ago. Most weeks it says Steady, because that's the truth. It isn't a grade or a medical measurement, just a mirror we hold steady. • STREAKS THAT FORGIVE — Daily step streaks with 4 shields a month (bank up to 8) for the days life happens. If a shield can cover a missed day, your streak waits on Today, dimmed, until you decide. Use one and you see it land on the day it saved. Free for everyone. BUILT FOR IPHONE DUO Just Walk fits both screens. Closed, it's the Just Walk you know on the outer display. Open it upright for the same layout at full size, or turn it sideways to see your step ring beside your day. Half-folded like a laptop mid-walk, the phase and time sit on the top half and your pace and controls on the bottom, clear of the crease. ALSO IN JUST WALK • Step tracking that matches Apple Health • Tap your step ring to see about how many minutes of walking are left, at the pace of your recent walks (a steady walk until you have some) • VoiceOver announces each new stretch of an interval walk, with its time and what's next • Home Screen and Lock Screen widgets • Fat Burn Zone walks with live heart-rate guidance (Apple Watch) • Post-meal walks: 10 minutes on your feet after you eat • Full Apple Watch app with complications TRY THE COACHING FREE Every interval walk comes with live cadence coaching, including your free weekly walk. The first 7 days of the program are free too, and your How it's going numbers are free, always. Just Walk Pro unlocks the full 4-week program, unlimited coached walks, and the story behind your numbers: full history, your weekly Ease readings, and a note from your coach about why they moved. Eligible new subscribers can start with a 7-day free trial on the annual plan. No account. No ads. Your step counts and other health data stay on your devices, in Apple Health; iCloud syncs your streaks and walks without them. Terms of Use (EULA): https://onworld.tech/just-walk/terms Privacy Policy: https://onworld.tech/just-walk/privacy

About

Fasting Mastery

Features
Read full description

You fasted for 14 hours yesterday. You just don't know it yet. Fasting Tracker shows you exactly where you are in your fast — right now, in real time. No meal plans. No food databases. No judgment. Just the clock, the phase you're in, and a little nudge to keep going. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lavender-utahraptor-b7c.notion.site/Privacy-policy-2f68fbc25c0f80b293d0fba19d8ba7a5 YOUR FAST, LIVE - See your fasting duration tick up every second — Fat Burning, Autophagy, whatever phase you're chasing - Log your last meal in 3 taps. Seriously. Three. - Quick presets: Now, 15m ago, 1h ago — because nobody wants to type the exact time they ate a biscuit STAY HYDRATED, STAY FASTING - Log every sip with quick presets and your own custom "My cup" size - Live hydration score shows how you're doing over the last 24 hours — full tank means you nailed it - A dedicated water page: today's intake, weekly bars, hourly patterns, and a confidence range that sharpens as you log - Water never breaks your fast — it has zero calories, so the clock keeps running while you stay topped up DATA THAT ACTUALLY TELLS YOU SOMETHING - 24-hour timeline cards: see your fasting vs eating windows painted across every day of the week - Phase stacked bar chart: find out which fasting phase you're actually spending time in - Insights screen: your streak, your personal best, your eating window, your program match — all in one scroll - Calorie breakdown by meal type with your personal BMR as a reference line (optional body profile) - Filter your history by Water, Food, or Alcohol with a single tap YES, ALCOHOL LOGGING TOO - Log drinks from 11 types: Lager, Red Wine, Spirits, Cocktails and more - Automatic calorie calculation from ABV and serving size - Real-time Blood Alcohol Level estimate with dissolution curve, drink-event markers, and predicted sober time - It participates in your fasting clock, because biology doesn't take the night off BUILD STREAKS THAT ACTUALLY STICK - Auto-detected fasting patterns (16:8, 18:6, 20:4 and more) - Week-over-week trend arrows — is your fast getting longer or slipping? - Personal best tracker — your longest fast, sitting there daring you to beat it - Fasting program comparison: see how close you actually are to your goal - YOUR DATA, EVERYWHERE - Works 100% offline — no account needed to start - Optional cloud sync via Google Sign-In — your history (water included) follows you across devices - Cloud backup and restore — nothing gets lost No guilt. No streaks of shame. No diet culture. Just your data, honestly. And a very satisfying timer going up. Download free. Start your fast.

Screenshots

Just Walk4 screens
Fasting Mastery4 screens

Verdict

The call

The clearest difference is iOS requirement: Fasting Mastery at 15.0 against Just Walk's 17.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Just Walk sells 3 in-app purchases, starting at $0.99 per month and Fasting Mastery sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Just Walk ships an update every 4 days, Fasting Mastery every 5 days. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 8 level
Just Walk versus Fasting Mastery: the parameters behind the verdict, then further details
ParameterJust WalkFasting Mastery
PriceFreeFree
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 4 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size11 MB45 MB
Age rating4+12+
DeveloperOn World Tech LLCYasiru Abeygunawardana

In-app purchases

3 purchases

Just Walk

Subscriptions2
  • Just Walk Pro (Monthly)$0.991 Month
  • Just Walk Pro (Annual)7 Days trial$9.991 Year
One-time1
  • Just Walk (Streak Shield)$2.99
3 purchases

Fasting Mastery

Subscriptions3
  • Monthly$1.991 Month
  • Quarterly$2.993 Months
  • Annual$9.991 Year

Questions

Is Just Walk free?
Just Walk is free to download, with in-app purchases available.
Is Fasting Mastery free?
Fasting Mastery is free to download, with in-app purchases available.
Do Just Walk or Fasting Mastery have ads?
Neither Just Walk nor Fasting Mastery shows ads.
Which is updated more often, Just Walk or Fasting Mastery?
Just Walk ships an update every 4 days, and Fasting Mastery every 5 days. Most recently, Just Walk was updated on October 14, 2026 and Fasting Mastery on October 15, 2026.

Other comparisons