Comparison

Fast vs 16

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

Head to head
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.

About

16

Track your intermittent fasting journey with customizable plans and real-time analytics. Log meals and water intake, and receive personalized meal tips to support your weight loss goals. Supports various popular fasting methods.

Highlights
  • Intermittent fasting timer
  • Custom fasting plans
  • Real-time analytics
  • Meal and water tracker
  • Meal tips and recipes
  • Multiple fasting modes
Features
Read full description

Lose Weight The Healthy Way With Fast 16:8 Fasting Timer Intermittent Fasting have never been easier with our app! Try the most popular and effective fasting techniques all in one powerful tool: Intermittent Fasting - Choose from various IF time ranges and see our countdown fasting timer keep you on track! Custom Fasting Plans - Create custom fasting schedules and meal plans tailored to your goals. Real-Time Analytics - Get insights into your progress with detailed analytics and graphs tracking your weight loss journey. Meal & Water Tracker - Note your meals and water intake during eating windows with our meal logger. Meal Tips - Get customized meal ideas and recipes for your fasting regimen from our large database. Switch between fasting modes easily: 16:8, 5:2, The Warrior and more. Relax and #EmbraceTheFast with the most complete fasting app. Download now to start losing weight the right way! - Subscription starts from USD 3.99. + a week subscription + a month subscription + a year subscription • Check in app for exact pricing in your region • Payment will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration/price selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable • You can manage your subscription and/or turn off auto-renewal by going to your iTunes Account Settings, but refunds will not be given for any unused portion of the term. Terms of Service: https://www.maplelabs.co/policies/#terms Privacy: https://www.maplelabs.co/policies/#terms If you have any feedback, do not hesitate to contact us at support@maplelabs.co

Screenshots

Fast4 screens
163 screens

Verdict

The call

The clearest difference is rating: Fast at 4.7 against 16's 4.0. Fast also leads on ads (none vs shown) and ratings volume (3.3K vs 4). 16's advantage is review sentiment (100% vs 75%) and iOS requirement (13.0 vs 18.6). On price, update cadence, in-app purchases and monetization model 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 sells 8 in-app purchases, starting at $4.99 per month and 16 sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Fast holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Fast has 3.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 75% of Fast's written reviews are positive against 100% of 16's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Fast ships an update every 2 months, 16 every 6 weeks. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.

Scorecard5 real differences · 5 level
Fast versus 16: the parameters behind the verdict, then further details
ParameterFast16
PriceFreeFree
Rating4.7 (3.3K ratings) — better4.0 (4 ratings)
Positive reviews74.6% of reviews100.0% of reviews — better
Number of ratings3.3K — better4
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS18.613.0 — better
Further details — not scored
Size116 MB54 MB
Age rating12+17+
DeveloperMaxima AppsMaple Labs Co., Ltd

Customer experience

Fast

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

16

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

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

16

Not enough reviews yet to summarise bugs or requests.

In-app purchases

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
5 purchases

16

Subscriptions5
  • Weekly Premium$4.997 Days
  • Monthly Premium$9.991 Month
  • Yearly Premium3 Days trial$12.991 Year
Show 2 more
  • Premium2 variants$12.993 Months
  • Premium$24.993 Months

Questions

Is Fast free?
Fast is free to download, with in-app purchases available.
Is 16 free?
16 is free to download, with in-app purchases available.
Which has better reviews, Fast or 16?
Fast is rated higher. Fast averages 4.7 out of 5 from 3.3K ratings, while 16 averages 4.0 from 4 ratings.
Do Fast or 16 have ads?
16 shows ads; Fast does not.
Which is updated more often, Fast or 16?
Fast ships an update every 2 months, and 16 every 6 weeks. Most recently, Fast was updated on September 28, 2026 and 16 on September 17, 2026.

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