Comparison

Watch Weight vs BMI

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

Head to head
About

Watch Weight

Easily record and visualize your bodyweight using your Apple Watch or iOS device. This app offers a simple interface to log daily measurements and view trends in charts or lists, with data syncing to the Health app.

Highlights
  • Daily weight logging
  • Apple Watch app for entry
  • Weight data charts
  • List view of entries
  • Syncs with Health app
  • Export data to email
Features
Read full description

Watch Weight is a daily bodyweight tracker that allows you to record weight measurements using your Apple Watch or iOS device. This app presents an easy-to-use interface for tracking your weight. You can enter your weight data daily, and then view the data in a chart, or in list format. Weight entries are also saved to the Health app. Watch Weight is useful for anyone who routinely measures their bodyweight and has an interest in easily recording and viewing their bodyweight data. ---------------------------------------- Why Use Watch Weight? ---------------------------------------- - Weight measurements saved to the Health app - Watch app for entering weight measurements - A controllable weight-data chart - No advertisements - The ability to export your bodyweight data as a spreadsheet-friendly CSV file, to email or any app (Premium Mode, a one-time in-app purchase)

About

BMI

Easily calculate your Body Mass Index (BMI) and track your weight over time. Monitor your progress towards your health goals with this straightforward tool.

Highlights
  • BMI calculation
  • Weight tracking
  • Progress monitoring
  • Health goal support
Features
Read full description

Track your BMI, monitor weight progress, and stay within your healthy weight range. BMI Tracker & Calculator helps you calculate Body Mass Index, save measurements, and visualize progress through a modern dashboard designed for everyday health tracking.

Screenshots

Watch Weight3 screens
BMI2 screens

Verdict

The call

The clearest difference is review sentiment: Watch Weight at 47% against BMI's 0%. Watch Weight also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). BMI's advantage is rating (4.9 vs 4.2). On price, ratings volume, update cadence and in-app purchases 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. Watch Weight sells 1 one-off in-app purchase and BMI sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

BMI holds the better App Store score, 4.9 against 4.2. Both are backed by a comparable volume of ratings — 45 and 56 respectively. Written reviews complicate that: 47% of Watch Weight's written reviews are positive against 0% of BMI's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Watch Weight ships an update every 4 months, BMI every 6 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
Watch Weight versus BMI: the parameters behind the verdict, then further details
ParameterWatch WeightBMI
PriceFreeFree
Rating4.2 (45 ratings)4.9 (56 ratings) — better
Positive reviews46.7% of reviews — better0.0% of reviews
Number of ratings4556 — better
Update frequencyEvery 4 months — betterEvery 6 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.016 — better
Further details — not scored
Size10 MB7 MB
Age rating4+4+
DeveloperYogasoft ApplicationsAn Banh

Customer experience

Watch Weight

All ratings45 ratings
Positive80.0%
Neutral8.9%
Negative11.1%
Written reviews15 reviews
Positive46.7%
Neutral26.7%
Negative26.7%

BMI

All ratings102 ratings
Positive98.0%
Neutral1.0%
Negative1.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Watch Weight

One-time1
  • Simple Weight Premium$0.99
1 purchases

BMI

One-time1
  • Upgrade Pro Version$1.99

Questions

Is Watch Weight free?
Watch Weight is free to download, with in-app purchases available.
Is BMI free?
BMI is free to download, with in-app purchases available.
Which has better reviews, Watch Weight or BMI?
BMI is rated higher. Watch Weight averages 4.2 out of 5 from 45 ratings, while BMI averages 4.9 from 56 ratings.
Do Watch Weight or BMI have ads?
BMI shows ads; Watch Weight does not.
Which is updated more often, Watch Weight or BMI?
Watch Weight ships an update every 4 months, and BMI every 6 months. Most recently, Watch Weight was updated on November 1, 2026 and BMI on October 29, 2026.

Other comparisons