Comparison

16 vs Fastia

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

Head to head
About

16

Features
Read full description

Intermittent Fasting Tracker 16:8 – A Calmer, Smarter Way to Improve Your Health Are you looking for a simple, natural way to lose weight? Do you want to feel healthier without strict diets, intense workouts, or complicated routines? This Intermittent Fasting Tracker is built to guide you gently, confidently, and effortlessly on your journey to better wellness. Intermittent fasting is one of the most trusted methods to support weight loss and improve your metabolic health. With the right schedule, your body begins burning stored fat, stabilizing energy levels, and repairing cells more efficiently. This app makes fasting easier to understand, easier to follow, and easier to maintain — even if you’re just getting started. Is Intermittent Fasting Right for You? Studies show that structured fasting helps the body rest, reset, and function at its best. It may support insulin sensitivity, reduce inflammation, promote clearer thinking, and help balance your weight naturally. Our app gently guides you through each fasting cycle so you always know what to do next — no pressure, no confusion. Why Users Love This App - Natural Weight Management Lose weight sustainably by letting your body tap into its own energy reserves — no calorie counting needed. - Burn Fat More Efficiently Support fat-burning through well-timed fasting periods that work with your metabolism, not against it. - Better Daily Energy Fasting may improve mental clarity and help you feel more focused throughout the day. - Improve Long-Term Health Consistent fasting has been linked to better digestion, improved blood sugar control, and healthier aging. --- How to Get Started 1. Select how long you want your fasting window to be. 2. Choose from popular plans such as 14:10 (the easy to start), 16:8 (the most popular), 18:6 (the fat burning), 20:4 (the warrior diet), OMAD (one-meal-a-day), and more. 3. Start your fasting timer and let the app guide you with clear progress charts and helpful notifications. That’s it — simple, calm, and manageable for any lifestyle. --- Key Features - Designed for beginners, intermediate, and advanced fasters - Clean, intuitive fasting timer - Popular fasting plans with flexible adjustments - Weight tracking with clear visual trends - Syncs easily with Apple HealthKit - Helpful wellness tips and health articles - Encouraging insights to keep you consistent --- What Makes This Fasting App Different? A Supportive, Easy-to-Follow Experience Start, pause, or adjust your fasting window anytime. See how each cycle affects your body through simple graphs and daily summaries. Balanced, Science-Backed Guidance The app provides practical explanations of what happens during fasting so you understand your progress — without feeling overwhelmed. Track Your Weight & Activity Together Monitor changes in your weight and steps in one place. Clear visuals help you spot patterns and stay motivated. Millions of people practice intermittent fasting every day to feel healthier, lighter, and more in control. With this app, you can join them — calmly, confidently, and at your own pace. Claim: This app is developed for informational purposes only. You must always consult your physician or doctor before starting any diet program. References: - Harvard Health Publishing – “Ketogenic diet: What the science says”: https://www.health.harvard.edu/staying-healthy/ketogenic-diet-what-the-science-says - Mayo Clinic – “Ketogenic diet: A detailed beginner’s guide”: https://www.mayoclinic.org/healthy-lifestyle/weight-loss/in-depth/ketogenic-diet/art-20458606 Privacy policy: https://kahastudio.com/keto-diet-app/policy.html Terms of use: https://kahastudio.com/terms-of-use.html

About

Fastia

Features
Read full description

INTERMITTENT FASTING AS A SIMPLE STEP TOWARD BALANCE Intermittent fasting is a modern approach to nutrition that helps bring structure to your day, better understand your body’s signals, and build healthy habits without strict restrictions. Fastia is a fasting tracker that makes fasting clear, convenient, and accessible for everyone. Instead of complicated diets and constant calorie counting, you get a simple system: a clear schedule of when to eat and when to pause. This approach helps maintain balance in your diet and creates a sense of control in everyday life. HOW TO START FASTING WITHOUT STRESS Starting intermittent fasting is often difficult due to a lack of structure. Fastia helps make this process easy and natural, even if you’re just getting familiar with fasting. The app offers popular routines that easily fit into your lifestyle: 16:8 — a convenient daily format for beginners, 18:6 — a more focused eating schedule, OMAD — a format for those seeking clear discipline. You can choose the option that suits you best and adjust it at any time. A FASTING TRACKER THAT SIMPLIFIES LIFE Fastia works as a smart fasting timer that helps you stop worrying about time and stay on track. You start a session — and the app guides you throughout the entire period. Gentle reminders let you know when your fasting window begins and ends, while statistics allow you to track your progress. This creates a sense of stability and helps build consistency without unnecessary pressure. Over time, managing your eating becomes a habit rather than a task. A FLEXIBLE EATING SCHEDULE THAT FITS YOUR RHYTHM Every day is different, so it’s important to have a tool that adapts to you. Fastia allows you to customize your fasting schedule according to your lifestyle. You decide when to start your fasting period, when your eating window opens, and which routine fits your schedule. HEALTHY HABITS WITHOUT PRESSURE Building a healthy lifestyle starts with small steps. Fastia helps make these steps consistent and easy to follow. When you see your progress and stability, internal motivation naturally grows. WHY FASTIA BECOMES PART OF YOUR DAILY ROUTINE Fastia is designed to simplify the process and make it comfortable: a simple and intuitive fasting timer, clear statistics and progress tracking, reminders that help you stay consistent, support for popular routines like 16:8, 18:6, OMAD, and a focus on building habits and discipline. It’s a tool that helps you move forward without overwhelm. FEEL CONTROL AND BALANCE Intermittent fasting is about balance between meals and periods of rest for your body. Fastia helps make this balance clear and easy to maintain in everyday life. Instead of chaotic eating — a clear structure. Instead of complex rules — simple solutions. Instead of pressure — gradual progress. Fastia is your daily assistant in building healthy habits and managing your nutrition. SUBSCRIPTION The app offers auto-renewing subscriptions: – 1 month — $6.99 – 1 year — $39.99 Prices may vary depending on your country and taxes (e.g., VAT). SUBSCRIPTION TERMS Payment will be charged to your Apple ID account at the time of purchase. The subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage your subscription or cancel it at any time in the App Store > Account > Subscriptions. Any unused portion of a free trial period (if offered) will be forfeited upon purchasing a subscription. Terms: https://sites.google.com/view/fastia/terms Privacy: https://sites.google.com/view/fastia/privacy-policy

Screenshots

164 screens
Fastia3 screens

Verdict

The call

The clearest difference is update cadence: 16 at every 3 weeks against Fastia's every 3 months. 16 also leads on iOS requirement (14.0 vs 17). 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. 16 sells 2 in-app purchases, starting at $4.99 per month and Fastia sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

16 ships an update every 3 weeks, Fastia every 3 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 4 level
16 versus Fastia: the parameters behind the verdict, then further details
Parameter16Fastia
PriceFreeFree
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17
Further details — not scored
Size86 MB10 MB
Age rating4+12+
DeveloperKAHA INNOVATION COMPANY LIMITEDMaksym Zaivyi

In-app purchases

2 purchases

16

Subscriptions2
  • Monthly Trial7 Days trial$4.991 Month
  • Yearly$19.991 Year
2 purchases

Fastia

Subscriptions2
  • Premium per month$6.991 Month
  • Premium for a year$39.991 Year

Questions

Is 16 free?
16 is free to download, with in-app purchases available.
Is Fastia free?
Fastia is free to download, with in-app purchases available.
Do 16 or Fastia have ads?
Neither 16 nor Fastia shows ads.
Which is updated more often, 16 or Fastia?
16 ships an update every 3 weeks, and Fastia every 3 months. Most recently, 16 was updated on October 30, 2026 and Fastia on October 31, 2026.

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