Comparison

WatchBMI vs Spooner PT

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

Head to head
About

WatchBMI

Features
Read full description

This app is a BMI (Body Mass Index) calculator. It is very simple, in that it asks for input of height and weight, and displays the calculated value for BMI. It does not measure anything; it only displays the calculated BMI based on entered values. I created this for my own practice, because I often need to calculate BMI, and do not want to have to take out and unlock my phone every time. While it will certainly work for an individual to determine her own BMI, it is targeted at users (such as myself) who need to calculate BMI based on the measurements of multiple individuals. It does report the CDC category of the BMI, but does not otherwise interpret any of the data. It does not store or collect any of the entered information. You should know that BMI is only a reflection of height and weight; it does not assess body composition, or differentiate between fat and muscle. Instructions: Simply click on one of the buttons on the main screen to show a keyboard for entering the value. WatchBMI can accept values in either the Metric or the Imperial system. Click the "M" button to change to metric, click the "I" button to change to imperial If Imperial: Click on "Pounds" to enter the weight in pounds. Use the "Back" button to go back to the main screen. Click on "Feet" to enter the feet part of height. Click on "Inches" to enter the inches part of height. If Metric: Click on "Kilos:" to enter the weight in kilograms. Click on "Cms: to enter the height in centimeters. The app does not allow inches greater than 11, feet greater than 7, or weight greater than 999, with similar maximums in metric. Once all three values have been entered, the main screen (again, click the "Back" button) to show the calculated BMI and the CDC category for that BMI. When changing from Imperial to Metric or Metric to Imperial, the height and weight will change as well, so you can enter weight in kilograms and height in feet and inches. Reference Information: Information from the U.S. Centers for Disease Control and Prevention (CDC) provides information about BMI and its appropriate use at https://cdc.gov/bmi BMI is a measure of weight relative to height. According to CDC at https://www.cdc.gov/bmi/about/index.html : BMI is a quick, low-cost, and reliable screening measure for underweight, overweight, or obesity; BMI is a valuable population health measure used worldwide; for individuals, BMI should be considered with other factors, such as blood pressure, cholesterol levels, and physical examination. The CDC Adult BMI Categories are from https://www.cdc.gov/bmi/adult-calculator/bmi-categories.html. BMI and this app does not diagnose or treat any condition. The CDC BMI Categories calculated by this app are designed for adults 20 and older, and do not apply to children. Check with your doctor before using this app or making any medical decisions based on BMI.

About

Spooner PT

Access your personalized home exercise program with HD instructional videos and track your progress. Securely message your provider and earn virtual trophies for milestones. Book appointments and manage your activity data.

Highlights
  • Personalized Home Exercise Program
  • HD Instructional Videos
  • Secure Messaging with Provider
  • Progress Tracking and Achievements
  • Appointment Booking
  • Multi-language Support
Features
Read full description

Welcome to the Spooner PT App! Log on to access your personalized Home Exercise Program on your mobile device. Using this app, you can access your personalized Home Exercise Program with HD Instructional videos. On the 'Messages' tab, you can securely communicate with your Spooner PT provider. As you make progress in your program, you'll earn virtual trophies and achievement badges to celebrate your milestones! Visit the 'Awards' tab to see your achievements and track your progress. On the 'Awards' tab, you can track these items. Prefer a language other than English? Go to the 'More' tab and select 'Languages' to pick another language option. If you need to book an appointment, please go to the 'Appointments' tab for more info. Make sure to select 'Mark as Complete' when doing your exercises to ensure that your provider can keep track of your progress! You must be a Spooner PT patient to gain access. This app integrates with your phone's Motion and Fitness activity framework to read daily step count data allowing your provider to monitor your activity.

Screenshots

Spooner PT4 screens

Verdict

The call

The clearest difference is price: Spooner PT at Free against WatchBMI's $0.99. WatchBMI's advantage is update cadence (daily vs every 3 months) and iOS requirement (13.0 vs 15.1). On 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

Spooner PT is free to download; WatchBMI costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

WatchBMI ships an update daily, Spooner PT every 3 months. The most recent releases landed on September 6, 2026 and August 19, 2026 respectively.

Scorecard3 real differences · 6 level
WatchBMI versus Spooner PT: the parameters behind the verdict, then further details
ParameterWatchBMISpooner PT
Price$0.99Free — better
Rating—5.0 (4 ratings) — better
Number of ratings—4 — better
Update frequencyDaily — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size0 MB42 MB
Age rating17+12+
DeveloperJames NachbarSpooner, Inc.

In-app purchases

None

WatchBMI

No in-app purchases

None

Spooner PT

No in-app purchases

Questions

Is WatchBMI free?
WatchBMI costs $0.99, with no in-app purchases.
Is Spooner PT free?
Spooner PT is free to download, with no in-app purchases.
Do WatchBMI or Spooner PT have ads?
Neither WatchBMI nor Spooner PT shows ads.
Which is updated more often, WatchBMI or Spooner PT?
WatchBMI ships an update daily, and Spooner PT every 3 months. Most recently, WatchBMI was updated on September 6, 2026 and Spooner PT on August 19, 2026.

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