Comparison

Window vs FastLog

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

Head to head
About

Window

This app helps you adopt an intermittent fasting lifestyle with science-based guidance and personalized recommendations. Track your fasting and eating periods, monitor weight loss goals, and stay hydrated. Access expert insights and challenges to build healthier habits.

Highlights
  • Fasting timer
  • Weight journal
  • Water tracker
  • Personalized fasting programs
  • Meal plans
  • Healthy challenges
Features
Read full description

Take the step towards a healthier you with Window, your in-hand intermittent fasting companion. We use a science-based approach, guided by experts, and offer personalized recommendations suited to you and your lifestyle! Intermittent fasting is a popular eating pattern that can help you lose weight and feel healthier. Window will help you do it confidently – the right way. Track your fasting and eating, set weight loss goals and monitor them, track your water consumption, and get healthy insights from nutritionists. Window has everything you need (and more) to create a healthier lifestyle! ** What you will get as a FREE Window user ** • Fasting timer – Track your fasting and eating periods. • Timely reminders – Get notifications when your fasting windows close or open. • Weight journal – Set your weight goal, and monitor the progress. • Water tracker – Control your hydration level. • Healthy blog – Learn from leading nutritionists, and get insights on health, eating, and body – and how they all relate. • Syncs with your Apple Watch. • Syncs with Apple Health. ** Join Window PREMIUM to access: ** • Personalized fasting program. • All intermittent fasting plans – Switch between fasting plans to meet your current needs. • Your individual meal plan – Get nutritionists’ recommendations of what to eat for breakfast, lunch, and dinner. • Personal statistics – Track your own statistics like weight, water intake, and more. • Healthy challenges – Build new habits, like consuming less sugar, with small tasks. • Nutrition and mood tracker – Understand how fasting influences your body and mind. Whether you want to improve your eating habits or lose a little weight, we will help you stay on track and provide all of the support and guidance you may need. * SUBSCRIPTION INFORMATION Subscription payments will be charged to your App Store account at confirmation of your purchase. Subscriptions will automatically renew and you will be charged unless auto-renew is turned off or unless you cancel at least 24 hours prior to the end of the current subscription or trial period. Any unused portion of a free trial period will be forfeited when you purchase a premium subscription during the free trial period. The cost of renewal depends on the Subscription Plan you choose. Subscriptions and auto-renewal may be managed by going to Account Settings after purchase or by contacting Customer Support. Window is intended to be a tool to track intermittent fasting and is not a medical or healthcare service. The content within Window is for informational purposes only. You should consult with a medical professional before starting intermittent fasting or any other weight loss program, especially if you are pregnant or suffer from a medical condition. Happy tracking! Icons powered by icons8.com ThrivePort, LLC is a part of the Apalon family of brands. See more at Apalon.com. By using Window you agree to our Terms of Service and Privacy Policy. Privacy Policy: http://www.thriveport.com/privacypolicy/ EULA: http://www.thriveport.com/eula/ AdChoices: http://www.thriveport.com/privacypolicy/#4 California Privacy Notice: http://www.thriveport.com/privacypolicy/index.html#h

About

FastLog

Track your fasting periods, water intake, and weight with this simple tool. Receive notifications when you reach your fasting goals and view detailed graphs to stay motivated on your weight loss journey.

Highlights
  • Fasting timer with notifications
  • Water intake tracking
  • Weight logging
  • Progress graphs
  • Motivation tools
Features
Read full description

FastLog is a simple tool to help you keep track of your Fasting Times, Water Intake, and Weight Log. The Timer will notify you when your fasting goal is reached, detailed graphs will show you your progress and keep you motivated. Fasting is an easy and healthy way to lose weight.

Screenshots

Window4 screens
FastLog4 screens

Verdict

The call

The clearest difference is rating: Window at 4.5 against FastLog's 2.0. Window also leads on ratings volume (11K vs 1) and device support (4 vs 2). FastLog's advantage is in-app purchases (none vs 10) and review sentiment (50% vs 22%). On price, update cadence, ads and iOS requirement 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. Window sells 9 in-app purchases, starting at $4.99 per 7 days. FastLog asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Window holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: Window has 11K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 22% of Window's written reviews are positive against 50% of FastLog's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Window ships an update monthly, FastLog fortnightly. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Window versus FastLog: the parameters behind the verdict, then further details
ParameterWindowFastLog
PriceFreeFree
Rating4.5 (11K ratings) — better2.0 (1 ratings)
Positive reviews22.0% of reviews50.0% of reviews — better
Number of ratings11K — better1
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS14.0 — better15.2
Further details — not scored
Size131 MB13 MB
Age rating17+4+
DeveloperMosaic S.r.l.Blank Page Digital Ltd

Customer experience

Window

All ratings10,601 ratings
Positive88.0%
Neutral4.7%
Negative7.3%
Written reviews952 reviews
Positive22.0%
Neutral9.0%
Negative69.0%

FastLog

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Window

Reported bugs

5 issues
  • Fasting times not accurately recorded
  • Data loss and reset issues
  • Subscription management problems
  • Frequent app crashes and freezes
  • Notifications not working as expected

Requested features

5 requests
  • Ability to edit fasting/eating times
  • Integration with fitness trackers
  • More detailed data analysis and reporting
  • Customizable fasting plans and reminders
  • Better support for longer fasting periods

FastLog

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Window

Subscriptions9
  • Window Pro Weekly$4.997 Days
  • Window Pro Weekly7 Days trial$4.997 Days
  • Window Premium (1 Month)$14.991 Month
Show 6 more
  • Window Premium (1 Year)7 Days trial$39.991 Year
  • Window Premium (1 Year)7 Days trial$49.991 Year
  • Window Premium (1 Year)2 variants$59.991 Year
  • Window Premium (1 Year)$69.991 Year
  • Window Premium (1 Year)$79.991 Year
  • Window Premium (1 Year)7 Days trial$89.991 Year
None

FastLog

No in-app purchases

Questions

Is Window free?
Window is free to download, with in-app purchases available.
Is FastLog free?
FastLog is free to download, with no in-app purchases.
Which has better reviews, Window or FastLog?
Window is rated higher. Window averages 4.5 out of 5 from 11K ratings, while FastLog averages 2.0 from 1 ratings.
Do Window or FastLog have ads?
Neither Window nor FastLog shows ads.
Which is updated more often, Window or FastLog?
Window ships an update monthly, and FastLog fortnightly. Most recently, Window was updated on November 11, 2026 and FastLog on November 3, 2026.

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