Comparison

Simply Fast vs iFast

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

Head to head
About

Simply Fast

This minimalist app helps you achieve time-restricted fasting goals with a simple, intuitive interface. Configure fasting start times and durations, and receive timely notifications for your fasting and eating windows. No account or sign-in is required.

Highlights
  • Simple and easy-to-use design
  • Customizable fasting start times
  • Adjustable fasting durations (12-23 hours)
  • Fasting and eating window notifications
  • No sign-in or account required
  • Privacy-focused, no data collection
Features
Read full description

Simply Fast is a beautifully simple, no-frills companion for time-restricted eating. Rebuilt from the ground up for the latest iPhone and Apple Watch, it keeps the same clean, one-glance design while feeling right at home on today's devices. Set your window, glance at your progress, and get on with your day. [Features] • Clean, distraction-free design for iPhone and Apple Watch. • Set your fasting start time to any half hour of the day. • Choose a fasting duration from 12 to 23 hours. • A live progress bar shows your current fasting or eating window, with the time remaining at a glance. • Apple Watch complications for modern watch faces, so your window is always one look away. • A notification at the start of each fasting and eating window. • Your schedule stays in sync across iPhone and Apple Watch. • No sign-in, no account, no ads, and no pop-ups. • Private by design: the app collects nothing and sends us no information. [Important] You should consult your doctor before starting or changing a fasting schedule. Simply Fast supports time-restricted eating only, not full-day fasting such as 5:2, and it does not track or store a history of your fasts. [Feedback] We would love to hear from you. Please reach us through the app support page (https://www.mpathy.tech/contact-us). If you find Simply Fast useful, please tell a friend and leave a rating on the App Store. Your support keeps the app going.

About

iFast

This app helps you track your fasting periods and monitor your progress towards your health goals. It supports various popular fasting methods, including circadian rhythm fasting and intermittent fasting schedules.

Highlights
  • Track fasting periods
  • Monitor progress
  • Support for popular fasting types
  • Circadian rhythm fasting
  • Intermittent fasting schedules
  • Custom prolonged fasts
Features
Read full description

iFast is your all-in-one intermittent fasting and healthy-living companion, and it is about far more than a timer. FASTING, DONE RIGHT • Any protocol: 14:10, 16:8, 18:6, OMAD or a custom window • A live timer with metabolic zones so you can see what your body is doing • Streaks, history and gentle reminders that keep you consistent HOME SCREEN AND LOCK SCREEN WIDGETS • The medium widget puts your fast, water, steps and food at a glance • A live countdown to your goal, so you always know how long is left • A small size for your fast and streak, plus Lock Screen widgets on iOS 16 and later • Tap a row in the medium widget to jump straight to logging it A COACH IN YOUR POCKET • Ask Ember, your personal coach, about fasting, food or training • Grounded, personalized guidance based on your goals and your logs ACCOUNTABILITY CIRCLES • Get matched into a small group on the same journey • Encourage each other and stay on track together TRACK WHAT MATTERS • Weight, water, steps, workouts and body measurements • Snap a photo of your meal for instant calorie and macro estimates • Clean charts that turn your data into visible progress APPLE HEALTH • Two-way sync so all your health data stays in one place iFast Pro unlocks photo meal analysis, higher coach limits and more. iFast Pro is an auto-renewable subscription. Payment is charged to your Apple ID at confirmation of purchase. It renews automatically unless canceled at least 24 hours before the end of the period; manage or cancel in your App Store account settings. Terms of Use: https://manuongithub.github.io/FastTrackerPolicies/termsofuse.html Privacy Policy: https://manuongithub.github.io/FastTrackerPolicies/privacypolicy.html

Screenshots

Simply Fast3 screens
iFast4 screens

Verdict

The call

The clearest difference is price: iFast at Free against Simply Fast's $0.99. iFast also leads on update cadence (every 3 days vs every 2 months) and ratings volume (22 vs 2). Simply Fast's advantage is ads (none vs shown) and review sentiment (100% vs 86%). On rating, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

iFast is free to download; Simply Fast costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Simply Fast against 4.6 for iFast. That said, the two scores are not equally well evidenced: iFast has 22 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of Simply Fast's written reviews are positive against 86% of iFast's.

UpkeepUpdate frequency

Simply Fast ships an update every 2 months, iFast every 3 days. The most recent releases landed on September 22, 2026 and October 9, 2026 respectively.

Scorecard7 real differences · 3 level
Simply Fast versus iFast: the parameters behind the verdict, then further details
ParameterSimply FastiFast
Price$0.99Free — better
Rating4.5 (2 ratings)4.6 (22 ratings) — better
Positive reviews100.0% of reviews — better85.7% of reviews
Number of ratings222 — better
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size2 MB62 MB
Age rating4+4+
DeveloperMpathy TechManu Mehrotra

Customer experience

Simply Fast

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

iFast

All ratings22 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews14 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

In-app purchases

None

Simply Fast

No in-app purchases

None

iFast

No in-app purchases

Questions

Is Simply Fast free?
Simply Fast costs $0.99, with no in-app purchases.
Is iFast free?
iFast is free to download, with no in-app purchases.
Which has better reviews, Simply Fast or iFast?
iFast is rated higher. Simply Fast averages 4.5 out of 5 from 2 ratings, while iFast averages 4.6 from 22 ratings.
Do Simply Fast or iFast have ads?
iFast shows ads; Simply Fast does not.
Which is updated more often, Simply Fast or iFast?
Simply Fast ships an update every 2 months, and iFast every 3 days. Most recently, Simply Fast was updated on September 22, 2026 and iFast on October 9, 2026.

Other comparisons