Comparison

Fast Tracker vs Prime

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

Head to head
About

Fast Tracker

This app simplifies intermittent fasting by allowing users to set custom fasting and eating windows. It provides timely alerts and tracks weight progress, making it ideal for beginners. It helps manage your fasting schedule with ease.

Highlights
  • Customizable fast and eating windows
  • Fasting and eating period timers
  • Start and finish fasting alerts
  • Weight tracking for progress
  • Simple and easy to use interface
Features
Read full description

FastTrack is the world's most simple and flexible fasting tracker. Perfect for those beginning intermittent fasting and looking for a place to start. Choose your fast length and the app will time your fasts and eating periods. - Simple and easy to use - Pick when to start fasting and eating periods - Alerts to remind you when to start and finish fasting - Weight tracking to view your progress over time This is the easiest fast tracker to use if you're just starting out fasting. Simply tell the app when you start and stop eating and it will automatically track your fasts, notifying you when you should begin and end fasting according to your schedule. Studies have shown that Intermittent fasting may help you burn fat, build muscle, reduce oxidative stress and inflammation, and prevent many diseases. Consult a doctor before beginning any new diet program. See terms of service here: https://www.appfactoryfitness.com/terms-of-service/fasttrack-terms-of-service

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

Screenshots

Fast Tracker3 screens
Prime4 screens

Verdict

The call

Fast Tracker and Prime both sit at 4.7 stars, but that hides the real split: 86% of Fast Tracker's written reviews are positive against 43% of Prime's. Prime's advantage is ratings volume (4.6K vs 431). On price, rating, update cadence 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. Fast Tracker sells 1 in-app purchase, starting at $2.99 per month and Prime sells 10 in-app purchases, starting at $9.99 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 — 4.7 for Fast Tracker against 4.6 for Prime. That said, the two scores are not equally well evidenced: Prime has 4.6K ratings behind it against 431, so its average is the more settled of the two. Written reviews are what separate them: 86% of Fast Tracker's written reviews are positive against 43% of Prime's.

UpkeepUpdate frequency

Fast Tracker ships an update monthly, Prime every 3 weeks. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level
Fast Tracker versus Prime: the parameters behind the verdict, then further details
ParameterFast TrackerPrime
PriceFreeFree
Rating4.7 (431 ratings) — better4.6 (4.6K ratings)
Positive reviews85.7% of reviews — better42.9% of reviews
Number of ratings4314.6K — better
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.6
Further details — not scored
Size6 MB323 MB
Age rating4+17+
DeveloperApp Factory, LLCSergei Sharov

Customer experience

Fast Tracker

All ratings430 ratings
Positive94.4%
Neutral2.6%
Negative3.0%
Written reviews42 reviews
Positive85.7%
Neutral4.8%
Negative9.5%

Prime

All ratings4,602 ratings
Positive91.3%
Neutral3.3%
Negative5.4%
Written reviews126 reviews
Positive42.9%
Neutral7.9%
Negative49.2%

User reviews

Fast Tracker

From 431 App Store ratings

What we love

  • 👍 Simple and intuitive user interface
  • ⏱️ Effective fasting and eating window tracking
  • 💰 Completely free with no hidden charges
  • 🔔 Helpful reminders and notifications
  • 📊 Clear stats display on single screen

Room to improve

  • 💸 Recent paywall implementation for core features
  • ⏳ Limited to 23.5 hour maximum fast duration
  • 📝 Unable to edit weight entries after initial save
  • 🔐 Difficult account cancellation process
  • ⚠️ Lacks extended fasting support (36+ hours)

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

Bugs and requests

Fast Tracker

Reported bugs

4 issues
  • Weight input only accepts first 3 digits despite decimal point display
  • Username validation prevents review submission
  • Cannot retrieve fasting history without premium after update
  • Unable to edit start time without paid subscription

Requested features

9 requests
  • Water intake tracking
  • Extended fasting support (36+ hours, multi-day fasts)
  • Calendar view for planning future fasts
  • 30-minute pre-fast end notifications
  • Ability to edit weight entries
Show 4 more
  • Ability to edit fast start times
  • Support for 5/2 fasts and quarterly fasting plans
  • Decimal precision for weight tracking
  • Diet and fasting tips/guidance

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

In-app purchases

1 purchases

Fast Tracker

Subscriptions1
  • FastTrack Premium Access7 Days trial$2.991 Month
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

Questions

Is Fast Tracker free?
Fast Tracker is free to download, with in-app purchases available.
Is Prime free?
Prime is free to download, with in-app purchases available.
Which has better reviews, Fast Tracker or Prime?
Fast Tracker is rated higher. Fast Tracker averages 4.7 out of 5 from 431 ratings, while Prime averages 4.6 from 4.6K ratings.
Do Fast Tracker or Prime have ads?
Neither Fast Tracker nor Prime shows ads.
Which is updated more often, Fast Tracker or Prime?
Fast Tracker ships an update monthly, and Prime every 3 weeks. Most recently, Fast Tracker was updated on October 25, 2026 and Prime on October 27, 2026.

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