Comparison

Prime vs Fast

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

Head to head
About

Prime

This app offers a tailored intermittent fasting experience for women, featuring a fasting tracker, weight monitoring, and personalized guidance. It helps users achieve fitness goals, manage weight, and understand the health benefits of fasting with a focus on women's specific needs.

Highlights
  • Fasting tracker (16:8 protocol)
  • Weight tracker
  • Water tracker with reminders
  • Personalized daily recommendations
  • Body status tracking
  • Fasting/eating interval stats
  • Community club
Features
Read full description

Prime: Intermittent Fasting App is the first fasting app tailored exclusively to women. Designed with an extremely effective fasting protocol, a simple weight tracker, fasting stats, and all the answers to your burning questions. Free Prime: Intermittent Fasting App will help you reach your fitness goals, take control of your weight (and life!), regulate your hormones, and enjoy all the health benefits that intermittent fasting offers in just a few simple clicks. Now’s the time to get the healthy body of your dreams. What are you waiting for? Install the app and start seeing results immediately! FEATURES: ** Fasting tracker ** The app focuses on the 16:8 fasting protocol — the most suitable protocol for women, but also provides other fasting protocols. Fasting presets work perfectly with any diet or food restrictions: keto, paleo, gluten-free, etc. Whether you are just starting out or already familiar with intermittent fasting, the Prime: Intermittent Fasting App will guide you through the process. ** Weight tracker ** Monitor your progress with the app’s weight tracker as it provides valuable insights. Nothing is more satisfying than seeing that weight curve move in the right direction? The app will help you achieve the weight goals that are right for you. ** Water tracker ** Don't forget to drink water! Use our water tracker with a reminder function. We automatically calculate the right amount for you. ** Personal daily recommendations ** Stay healthy and motivated with our daily recommendations! ** Body status ** We identify and track key stages in your fasting journey. ** Stats ** Track your fasting/eating intervals with a simple fasting plan. The beauty of intermittent fasting lies in its simplicity and efficiency. Forget about those rollercoaster diets and cleanses, and let the Prime Fasting App guide you to where you need to get. ** Insights ** Prime: Intermittent Fasting has been customized for women, based on their biology and needs. Through insights, you can access the knowledge of intermittent fasting for women and get your questions answered. For example, did you know that with intermittent fasting you can also build muscle? We explain how it works in our insights. ** The Club ** Join the community club and share your success with others. We are all here to change. Let’s empower each other! ** Personal coach ** Apply for the course with a personal coach! ** Health App Integration ** Prime: Intermittent Fasting App integrates the following data from the Health app (HealthKit) to keep track of your body status: body mass index, exercise minutes, height, weight, mindful minutes, date of birth, steps, and water. ** Subscription Information ** The Prime: Intermittent Fasting App is free to download and offers paid premium features. The Premium gives you access to personalized daily recommendations, insights, recipes, chat support, club chat, and statistics. Your subscription renews automatically unless canceled at least 24 hours prior to the end of the current period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Intermittent fasting has been the talk of the health world for good reason. The positive outcomes associated with the fasting lifestyle include self-healing mechanisms, detoxing, anti-aging, and other worthwhile benefits. Do you truly need to take a deep dive into all the research on intermittent fasting? Not really. All you need to do is download the Prime: Intermittent Fasting App. The app will happily guide you through the steps you need to manage your health and well-being. Note: This app is developed for informational purposes only. You must always consult your physician or doctor before starting any diet program. Terms & Conditions: https://primehealth.one/tc Privacy policy: https://primehealth.one/pp

About

Fast

This app helps you track intermittent fasting routines, monitor progress, and analyze health data. It offers educational content, motivational challenges, and a journal to record your feelings. Connect with friends for support and motivation on your wellness journey.

Highlights
  • Fasting timer and tracker
  • Progress analytics and history
  • Educational 'Know It' section
  • Motivational challenges and trophies
  • Mood tracker and journal
  • Health app integration (steps)
  • Fasting buddy feature
Features
Read full description

Fast: Fasting Tracker & Timer helps you build consistent fasting habits with flexible fasting plans, body weight logging, water intake tracking, reminders, and detailed progress insights. Whether you're new to intermittent fasting or already following a routine, the app provides the tools to stay organized and work toward your personal health and wellness goals. Choose a fasting plan, customize your schedule, and track every fast in one place with an easy-to-use fasting tracker. FASTING PLANS Find a fasting schedule that works for your lifestyle. Choose from 12:12, 13:11, 14:10, 15:9, 16:8, 17:7, 18:6, 19:5, 20:4, 21:3, 22:2, 23:1, MWF, TTS, or create your own custom fasting plan. Whether you're starting intermittent fasting or maintaining an existing routine, you can choose a plan that suits your goals. FASTING TRACKER & TIMER Track active and completed fasts with an intuitive fasting tracker and timer. Review your fasting history and monitor your consistency over time. BODY WEIGHT & WATER TRACKING Log your body weight and monitor changes throughout your fasting routine. Track your daily water intake to stay hydrated and build healthier habits alongside your fasting schedule. SMART REMINDERS Stay on schedule with fasting reminders and water intake reminders. Customize notifications to help you start and end your fasting window on time while maintaining your daily hydration routine. ANALYTICS & HISTORY Review your fasting sessions, body weight, hydration logs, activity, and history with easy-to-understand analytics that help you monitor your progress and stay consistent. INFORMATIVE BLOGS Learn more about intermittent fasting through informative blogs covering healthy habits, wellness topics, and practical guidance to help you better understand your fasting routine. FASTING BUDDIES Stay motivated by fasting together. Invite friends, track each other's progress, and encourage one another throughout your fasting journey with the Buddy feature. ACTIVITY SUPPORT Sync your activity data to keep your fasting progress and daily activity organized in one place for a more complete overview of your routine. Whether you're following a 16:8 fasting schedule, exploring different intermittent fasting plans, or creating a custom fasting routine, Fast: Fasting Tracker & Timer gives you the tools to stay organized and build lasting healthy habits. DISCLAIMER This app is intended for informational and lifestyle purposes only and does not provide medical advice, diagnosis, or treatment. Consult a qualified healthcare professional before starting any fasting routine, especially if you have an existing medical condition, are pregnant, or have specific dietary requirements. PRIVACY POLICY https://maximaapps.com/fasting/privacy_policy.html TERMS OF USE https://maximaapps.com/fasting/terms-of-use.html GET IN TOUCH Have questions, feedback, or suggestions? We'd love to hear from you. Contact us through the app or email us at feedback@maximaapps.com.

Screenshots

Prime4 screens
Fast4 screens

Verdict

The call

Prime and Fast both sit at 4.6 stars, but that hides the real split: 75% of Fast's written reviews are positive against 43% of Prime's. Fast also leads on device support (3 vs 1). Prime's advantage is update cadence (every 3 weeks vs every 2 months). On price, rating, ratings volume and ads 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. Prime sells 10 in-app purchases, starting at $9.99 per month and Fast sells 8 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Prime against 4.7 for Fast. Both are backed by a comparable volume of ratings — 4.6K and 3.3K respectively. Written reviews are what separate them: 43% of Prime's written reviews are positive against 75% of Fast's.

UpkeepUpdate frequency

Prime ships an update every 3 weeks, Fast every 2 months. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
Prime versus Fast: the parameters behind the verdict, then further details
ParameterPrimeFast
PriceFreeFree
Rating4.6 (4.6K ratings)4.7 (3.3K ratings) — better
Positive reviews42.9% of reviews74.6% of reviews — better
Number of ratings4.6K — better3.3K
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.6 — better18.6
Further details — not scored
Size323 MB116 MB
Age rating17+12+
DeveloperOksana SafronenkoMaxima Apps

Customer experience

Prime

All ratings4,604 ratings
Positive91.3%
Neutral3.3%
Negative5.4%
Written reviews126 reviews
Positive42.9%
Neutral7.9%
Negative49.2%

Fast

All ratings3,286 ratings
Positive91.8%
Neutral4.8%
Negative3.4%
Written reviews189 reviews
Positive74.6%
Neutral10.6%
Negative14.8%

User reviews

Prime

From 4.6K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Helpful for weight loss
  • 💡 Useful visual references
  • 👍 Responsive customer support
  • 👍 Motivating progress tracking

Room to improve

  • 💰 Expensive subscription
  • 🐛 Buggy and laggy
  • 🔍 Lacking in-depth features
  • 💰 Misleading about free options
  • 🗣️ Poor chat functionality

Fast

From 3.3K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Helpful for weight loss
  • 👍 Motivating with trophies
  • 👍 Customizable fasting plans
  • 👍 Integrates with health apps

Room to improve

  • 🐛 Timer issues/inaccuracies
  • 🐛 Inability to edit fasting times
  • 🐛 Syncing/data saving problems
  • 🐛 Crashes and glitches
  • 🔍 Lacking advanced features

Bugs and requests

Prime

Reported bugs

4 issues
  • Lost user progress and data
  • Subscription issues and lack of refunds
  • Unresponsive start/stop fasting buttons
  • Incorrect weight and fasting time tracking

Requested features

5 requests
  • Sync with fitness trackers
  • More varied meal plans and recipes
  • Ability to manually adjust fasting times
  • Customizable notifications and reminders
  • Integration with calorie tracking

Fast

Reported bugs

3 issues
  • Timer not accurately recording fasting times
  • Inability to update weight in app
  • Crashing when trying to view friend's status

Requested features

4 requests
  • Option to edit fasting start/end times
  • More detailed analytics and progress tracking
  • Improved syncing and data saving reliability
  • Expanded customization options

In-app purchases

10 purchases

Prime

Subscriptions10
  • SPECIAL DISCOUNT OFFER$9.991 Month
  • Premium Subscription$14.991 Month
  • Premium Subscription$19.991 Month
Show 7 more
  • Premium Subscription2 variants$24.993 Months
  • Premium Subscription2 variants$29.993 Months
  • Premium Subscription$39.991 Year
  • Premium Subscriptions$39.993 Months
  • Premium Subscription$49.991 Year
  • Premium Subscription$59.991 Year
  • Premium Subscription$69.991 Year
8 purchases

Fast

Subscriptions6
  • Fast Premium Monthly$4.991 Month
  • Fasting Monthly$14.991 Month
  • Fasting Annually$19.991 Year
Show 3 more
  • Fasting Premium$27.993 Months
  • Fast Premium Yearly$29.991 Year
  • Fasting Premium Yearly$39.991 Year
One-time2
  • Fasting One Time Special Offer$19.99
  • Fasting Pro$49.99

Questions

Is Prime free?
Prime is free to download, with in-app purchases available.
Is Fast free?
Fast is free to download, with in-app purchases available.
Which has better reviews, Prime or Fast?
Fast is rated higher. Prime averages 4.6 out of 5 from 4.6K ratings, while Fast averages 4.7 from 3.3K ratings.
Do Prime or Fast have ads?
Neither Prime nor Fast shows ads.
Which is updated more often, Prime or Fast?
Prime ships an update every 3 weeks, and Fast every 2 months. Most recently, Prime was updated on September 22, 2026 and Fast on September 23, 2026.

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