Comparison

BMI Calculator vs Weight Diary · BMI Calculator

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

Head to head
About

BMI Calculator

Calculate your Body Mass Index (BMI) using your weight and height to estimate body fat and assess health risks. This tool supports weight loss programs and offers metric and imperial system options.

Highlights
  • BMI calculation
  • Weight tracking
  • Metric and imperial system support
  • Health risk assessment
  • Weight loss program aid
Features
Read full description

BMI Calculator helps you to calculate your Body Mass Index (BMI) based on body weight, height. The BMI is an estimate of body fat and a good gauge of your risk for diseases that can occur with more body fat. The higher your BMI, the higher your risk for certain diseases such as heart disease, high blood pressure, type 2 diabetes, gallstones, breathing problems, and certain cancers. Ideal to help you with your loss weight program, keeping track of you current weight. • This app supports metric and imperial system. Note: This app is just for reference all the calculation are made using the WHO body max index formula, all the information displayed in the app such as graphs are just representations of the values of the formula. Please consult your health provider if you think your health is on risk. WHO website where you can consult more information about body mass index. https://www.who.int/europe/news-room/fact-sheets/item/a-healthy-lifestyle---who-recommendations

About

Weight Diary · BMI Calculator

Features
Read full description

Calculate BMI from height and weight in metric or imperial units. View a labeled gauge and adult reference categories, copy or share the result, and save today’s weight without retyping. Keep a dated weight history, edit or delete readings, and explore a chart with individual readings and a clearly labeled logged-day average trend estimate when enough data is available. Choose an optional lose, gain or maintain direction, or just track. Set your own reference or range. Weekly consistency recognizes check-ins, not lower weight. Choose your cadence, pause or hide encouragement. Daily reminders are optional and separate from weekly consistency. All features are free, with ads and no subscription or account required. Weight records stay on this device; calculation and logging work offline. Ads may use internet. No account-based cloud synchronization. BMI is an adult screening measure, not a diagnosis or direct body-fat measurement. It does not distinguish muscle from fat and is not intended for children or pregnancy. The app does not prescribe a target weight, diet or rate of change. Ask a healthcare professional for personal advice.

Screenshots

BMI Calculator3 screens
Weight Diary · BMI Calculator4 screens

Verdict

The call

The clearest difference is update cadence: BMI Calculator at every 11 days against Weight Diary · BMI Calculator's every 3 months. 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

BMI Calculator ships an update every 11 days, Weight Diary · BMI Calculator every 3 months. The most recent releases landed on October 13, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 9 level
BMI Calculator versus Weight Diary · BMI Calculator: the parameters behind the verdict, then further details
ParameterBMI CalculatorWeight Diary · BMI Calculator
PriceFreeFree
Rating4.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 11 days — betterEvery 3 months
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size31 MB26 MB
Age rating4+4+
DeveloperBosusoftJanoGroup LLC

In-app purchases

None

BMI Calculator

No in-app purchases

None

Weight Diary · BMI Calculator

No in-app purchases

Questions

Is BMI Calculator free?
BMI Calculator is free to download, with no in-app purchases.
Is Weight Diary · BMI Calculator free?
Weight Diary · BMI Calculator is free to download, with no in-app purchases.
Do BMI Calculator or Weight Diary · BMI Calculator have ads?
Both BMI Calculator and Weight Diary · BMI Calculator show ads.
Which is updated more often, BMI Calculator or Weight Diary · BMI Calculator?
BMI Calculator ships an update every 11 days, and Weight Diary · BMI Calculator every 3 months. Most recently, BMI Calculator was updated on October 13, 2026 and Weight Diary · BMI Calculator on October 28, 2026.

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