Comparison

Fastin vs Fastastic

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

Head to head
About

Fastin

This app guides you through intermittent fasting for weight loss and improved health. It offers personalized plans, tracking tools for food, weight, water, sleep, and activity, along with educational courses on fasting and nutrition. Visualize your progress with detailed statistics to stay motivated on your journey.

Highlights
  • Personalized fasting plans
  • Food, weight, water, sleep, and activity tracking
  • Fasting and nutrition courses
  • Progress statistics and charts
  • Step-by-step fasting guidance
  • Meal journal for mindful eating
Features
Read full description

Do you know how to lose weight and keep it for a lifetime? We have no way to exercise for 3 hours a day, weigh food, and count calories anytime. But we can control when to eat to Lose Weight which is FASTING. All you need to do is shift eating time to lose weight. The most popular and healthy way to lose weight from our wise ancients. Let’s guide you on how to start your fasting journey. Fastin: Intermittent Fasting is a simple fasting app, a powerful weight-loss tool. Lose weight, improve your health and simplify your lifestyle. Intermittent fasting has a powerful effect on your body and brain and may help you live a longer, healthier life. Intermittent fasting(IF) doesn’t specify which foods you should eat, but rather when you should eat them. Learn the science behind intermittent fasting(IF) so you can use it to achieve your goals. LIVE LONGER & LOOK BETTER HOW WE HELP YOU MASTER INTERMITTENT FASTING Fasting guidance A step-by-step guide to intermittent fasting Smart and flexible tracking tools that adapt to your needs Body status shows you what’s happening to your body when fasting Personalized fasting plans based on your body condition (6 plans available) Fasting Tools Food Tracker: log every meal and snack, view food values and trends and gain insights into our nutrition course Weight Tracker: record weight changes to reach your ideal weight Water Tracker: track consumption and stay hydrated Sleep tracker: aim to sleep to lose more weight Activity Tracker: track daily activity and motivate yourself to move a little more Reminders: hit every mini-goal to reach your dream target Fasting & Nutrition Courses Knowledge library for intermittent fasting and nutrition Professional content on nutrition, learn to choose the right foods Easy-to-use meal journal for mindful eating Boost your immune system, become stronger than ever Fasting Statistics(For insights & motivation) Visualize your fasting process and track changes in charts Reveal the patterns of your fasting process and body performance Find physiological harmony - Intermittent fasting connects body, mind & soul with your weight Get inspiring and self-reflective statistics - stay motivated. DISCLAIMER Intermittent fasting is a change in eating habits. It is not suitable for pregnant/nursing women, children under 18 years of age, or people with diagnosed eating disorders. Consult your doctor or health care professional. *Individual results may vary, and testimonials are not claimed to represent typical results. HEALTH APP INTEGRATION: Fastin: Intermittent Fasting - Simple Fasting App integrates with Apple Health App so you can sync your data (requires iOS 9 and above). Fastin: Intermittent Fasting also supports Face ID for security. SUBSCRIPTION POLICY Get full access to all the features and your personalized fasting plan including a nutrition guide in the Fastin: Intermittent Fasting app with an in-app purchase. Plans: $6.99 Weekly, $19.99 Quarterly Payment: Payment will be charged to your Apple account on confirmation of purchase Cancellation: Manage at your Apple Account Settings Renewal: Account will be charged for renewal 24-hours before the end of the current period TERMS & POLICY Privacy: https://s.bongmi.cn/miscs/fasting-app/en/privacy.html Service: https://s.bongmi.cn/miscs/fasting-app/en/service.html Download Fastin: Intermittent Fasting - Simple Fasting App to help you reach your goals faster and more effectively! Establish a basic eating discipline, keep yourself in good shape during self-isolation and use our educational and motivational content to stay mindful of your eating habits. Our mission is not only to offer you an Intermittent Fasting App, but also to improve your health, increase weight loss, and improve cognitive ability. Download Intermittent Fasting Tracker now. Start your new journey today!

About

Fastastic

Features
Read full description

Fastastic helps you plan fasts, track daily health inputs, compare progress photos, view analytics, earn achievements and build custom reports. Built for people who want a clear view of their fasts, daily habits and progress over time, Fastastic brings fasting records, health logs, photos, charts and reports together in one simple app. Start a fast, follow your timer, log daily check-ins and review your progress through clean analytics, calendars, charts and reports. Track fasting, weight, calories, steps, activity, sleep, water, mood, hunger, symptoms, lifestyle habits and progress photos in one place. Fastastic is a fasting timer, tracker, and educational wellness app. It does not provide medical advice, diagnosis, treatment, or emergency services. Fasting, calorie estimates, weight projections, fasting-stage labels, insights, and reports are for general education and personal tracking only and may be inaccurate. Always seek advice from a qualified doctor or clinician before fasting, changing diet or activity habits, making medical decisions, or if you have symptoms or a medical condition. PRIVATE BY DESIGN Your data is stored locally on your device. Fastastic does not store your personal information on company servers, does not sell your data and does not include advertising. FASTING TIMER & PLANS • Start a fast with a clear timer • Track planned duration, elapsed time and eating windows • Use Quick Start fasts for simple fasting timers • Create custom fast plans with duration, calories, steps and projected results • Schedule fasts and set fasting reminders • Review your fast history with detailed records DAILY HEALTH CHECK-INS Log daily inputs so you can understand how your habits change over time. Track: • Weight • Calories • Activity • Steps • Water • Water • Sleep • Hunger • Energy • Mood • Symptoms • Lifestyle habits APPLE HEALTH IMPORT Import supported Apple Health data such as weight, steps, active energy, sleep and water to keep your records easier to maintain. ANALYTICS, CALENDARS & CHARTS Fastastic gives you a clean view of your progress with: • Weight trend charts • Target weight tracking • Calendar views for daily records, fasts, photos and planned fasts • Weekly Summary for recent progress • Data tiles for key health and habit inputs PROGRESS PHOTOS Track visual progress by date and category. Use the Photo Timeline to compare progress photos over time and review changes alongside your logs. ACHIEVEMENTS & STREAKS Stay motivated with achievements and streaks for check-ins, fasting, workouts and positive habit days. CUSTOM REPORTS Build custom reports using selected date ranges, fast periods, photos, analytics and data tiles. Review your progress clearly or export your data when needed. PRO FEATURES Unlock advanced tools and longer/custom tracking with a one-time Pro upgrade. Fastastic is designed for personal tracking and planning. It does not provide medical advice, diagnosis or treatment. If fasting may be risky for you, speak with a qualified clinician before starting.

Screenshots

Fastin4 screens
Fastastic3 screens

Verdict

The call

The clearest difference is update cadence: Fastastic at daily against Fastin's every 3 weeks. On price, ads, 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

Both are free to download. Fastin sells 10 in-app purchases, starting at $4.49 per 7 days and Fastastic sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Fastin ships an update every 3 weeks, Fastastic daily. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 9 level
Fastin versus Fastastic: the parameters behind the verdict, then further details
ParameterFastinFastastic
PriceFreeFree
Rating4.8 (10K ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings10K — better—
Update frequencyEvery 3 weeksDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS16.616.4 — better
Further details — not scored
Size243 MB57 MB
Age rating17+17+
DeveloperBongmi Global GroupJAMIE GLAZIER

Bugs and requests

Fastin

Reported bugs

4 issues
  • Fasting timer resets unexpectedly
  • App crashes or freezes
  • Sync and login issues
  • Inability to edit past fasts

Requested features

6 requests
  • Ability to scan barcodes for nutrition info
  • More recipes and meal planning options
  • Integration with fitness trackers
  • Customizable fasting schedules
  • Better data tracking and analysis
Show 1 more
  • Improved customer support

Fastastic

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Fastin

Subscriptions10
  • FastingPrime1Weekly3 Days trial$4.497 Days
  • PrimeWeekly$6.997 Days
  • Fasting Prime3 Days trial$6.997 Days
Show 7 more
  • PrimeMonthly2 variants$9.991 Month
  • PrimeWeekly$9.997 Days
  • Fasting Prime3 Days trial$9.991 Month
  • PrimeQuarterly2 variants$19.993 Months
  • Fasting Prime7 Days trial$29.991 Year
  • PrimeQuarterly$29.993 Months
  • PrimeYearly$49.991 Year
1 purchases

Fastastic

One-time1
  • Fastastic Pro$5.99

Questions

Is Fastin free?
Fastin is free to download, with in-app purchases available.
Is Fastastic free?
Fastastic is free to download, with in-app purchases available.
Do Fastin or Fastastic have ads?
Neither Fastin nor Fastastic shows ads.
Which is updated more often, Fastin or Fastastic?
Fastin ships an update every 3 weeks, and Fastastic daily. Most recently, Fastin was updated on November 1, 2026 and Fastastic on October 28, 2026.

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