Comparison

Fastcal vs Fasting Diary

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

Head to head
About

Fastcal

Features
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New version! Easier, smarter, and more fun — now with protein tracking Simply take a photo of your meal or nutrition label, and FastCal’s AI will automatically analyze and count calories instantly. You can also upload photos directly from your gallery for maximum convenience. Track nutrition in more detail than ever Not just calories — now you can easily track protein intake as well. Perfect for weight loss, muscle building, or long-term healthy living. FastCal’s AI is specially designed for Thai foods, making food analysis more accurate and practical for daily life. Set clear health goals Just enter your age, weight, height, and activity level, and the app will calculate your daily calorie and nutrition targets to help you manage weight and improve your health effectively. Connect with your clinic doctor Track your meals, weight, and health habits continuously. Your data is securely stored in the cloud, allowing doctors and nutrition teams to provide personalized guidance anytime, anywhere.

About

Fasting Diary

This app helps users achieve their weight loss and health goals through intermittent fasting. It provides guidance, motivation, and customizable fasting schedules to support users in burning fat, boosting energy, and improving metabolic health.

Highlights
  • Customizable fasting schedules
  • Plans for beginners and experts
  • One-tap start/stop for fasting
  • Adjustable eating and fasting times
  • Fasting alerts and reminders
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Unlock the power of intermittent fasting to reach your goal weight and get healthy. You’ll lose weight effectively and feel more active! Boost your energy levels and metabolic health along the way. With Fasting Diary, you'll have the support you need to receive specialized direction, advices, and motivation that will propel you forward. We are here to help you achieve your best self and guide you on how to maximize the benefits of IF. Intermittent fasting: what is it? One of the most well-liked trends in fitness and wellness is intermittent fasting. It's more of an eating pattern that alternates between eating and fasting times than a diet. It tells you when to eat, not what foods to eat or stay away from. We eat three to four meals a day, or more, and we never get hungry these days. This means that our organs must constantly work hard and never stop breaking down food. Diabetes and other health issues, as well as obesity, may be caused by our eating habits. Your body will cleanse, burn fat, and rebuild when you fast. You will feel more energetic and healthy after a few weeks. How effective is it ? Intermittent fasting has been shown to result in rapid weight loss. When you fast, your body enters a state known as ketosis, or the ""fat-burning"" state, as your body runs out of glycogen. This is a successful fat-burning method. It is one of the safest and most natural method of weight loss. According to studies, eating constantly prevents your body from taking a break from digestion, which can lead to health issues like diabetes. Simply stopping eating for a period of time, known as fasting, helps in reducing workloads on your liver. Fasting trackers for men and women are appropriate for both beginners, experts, offering a variety of fasting schedules. It helps you carry out your plan. You can easily stick to your diet without having to change your lifestyle. Consult with your physician before fasting if you are under the age of eighteen, pregnant, nursing, experiencing health problems, or underweight. Intermittent Fasting Plans that work for everyone! Make a customized fasting schedule. 13–11, 15–9, 16–10, 16–8, 18–6, 20–4, 23–1, 24, 36, 48, or in any duration. Benefits of Intermittent Fasting - Burn the fat stores on your body. - During fasting, begin the process of detoxification and regeneration. - Reduce the rate of aging - Advantage for blood sugar regulation - Diminish inflammatory response - Prevent several illnesses, including diabetes and heart disease - Boost your metabolism and growth hormone levels. - make you feel more energetic and well-being - Boost the efficiency of your body and mind - The healthiest and most natural method for losing weight - Lose weight without dieting or working out Features - Different plans for intermittent fasting - For novices as well as experts - To start or stop, just tap once. - Make your own fasting schedule - Adapt the time for eating and fasting - Configure alerts for when you fast. - A timer for fasting - Monitor your weight - Verify the state of your fast with these articles and advice based on science. - No need to track your calorie intake - Lose weight in a simple and effect way. Connect with Apple Health to help you keep track of your health data and daily steps. This application's content is not intended to be regarded as expert medical advice. Please consult a healthcare expert before making any decisions pertaining to your health. Privacy Policy : https:/fastingdiary.app/policy Terms of Use : https://fastingdiary.app/terms

Screenshots

Fastcal4 screens
Fasting Diary4 screens

Verdict

The call

The clearest difference is in-app purchases: Fastcal at none against Fasting Diary's 4. Fasting Diary's advantage is update cadence (fortnightly vs every 5 weeks) and iOS requirement (13.0 vs 15.6). On price, ads 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. Fasting Diary sells 4 in-app purchases, starting at $0.99 per month. Fastcal asks for nothing beyond the download.

UpkeepUpdate frequency

Fastcal ships an update every 5 weeks, Fasting Diary fortnightly. The most recent releases landed on September 17, 2026 and August 28, 2026 respectively.

Scorecard3 real differences · 5 level
Fastcal versus Fasting Diary: the parameters behind the verdict, then further details
ParameterFastcalFasting Diary
PriceFreeFree
Positive reviews42.9% of reviews
Update frequencyEvery 5 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size54 MB63 MB
Age rating17+17+
DeveloperThanon KhongcharoensombatDimo Co.,Ltd.

In-app purchases

None

Fastcal

No in-app purchases

4 purchases

Fasting Diary

Subscriptions3
  • Pro monthly$0.991 Month
  • Pro 3 months$1.993 Months
  • Pro yearly$2.991 Year
One-time1
  • Pro$2.99

Questions

Is Fastcal free?
Fastcal is free to download, with no in-app purchases.
Is Fasting Diary free?
Fasting Diary is free to download, with in-app purchases available.
Do Fastcal or Fasting Diary have ads?
Neither Fastcal nor Fasting Diary shows ads.
Which is updated more often, Fastcal or Fasting Diary?
Fastcal ships an update every 5 weeks, and Fasting Diary fortnightly. Most recently, Fastcal was updated on September 17, 2026 and Fasting Diary on August 28, 2026.

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