Caliper: BMI Calculator
Body Fat & Healthy Weight
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Your BMI with full context. Body fat estimate, waist-to-height ratio, and exactly how far you are from a healthy range. No ads over your data.
BMI tells you a number. Caliper tells you what it means.
Enter your height, weight, age, and sex — and in seconds you see your BMI on a calm color-zoned arc, an estimate of your body fat percentage, your waist-to-height ratio, your full healthy weight range, and the exact target: "Lose 12 lbs to reach a healthy BMI." Then Caliper tracks the journey so the number becomes progress, not a verdict.
WHY BMI ALONE ISN'T ENOUGH
A single ratio can mislabel athletes as overweight and miss where you actually store fat. Caliper adds the context that turns a scary number into an honest read — body-fat estimate, waist-to-height ratio, a healthy range for your height, and a country benchmark that shows where you stand among people like you.
WHAT YOU GET FREE
• The Health Arc — your BMI on a color-zoned gauge, needle animated to your position
• Your exact target: "You are 12 lbs above a healthy BMI"
• Healthy weight range for your height
• Body-fat estimate (Deurenberg formula; U.S. Navy method if you add waist and neck)
• Waist-to-height ratio with a plain-language verdict
• Country benchmark: "leaner than X% of women aged 30–34 in the US"
• 30-day weight and BMI trend
• Milestone celebrations when you cross into a healthier zone
• Progress sharing card — always free
CALIPER PRO
• Full weight and BMI history beyond 30 days
• Body-fat and waist-ratio trend lines
• Projected date to reach your target at your current rate
• BMR and TDEE metabolic context
• "vs the world" global benchmark percentile
• PDF and CSV export
• No ads anywhere
Pro is $14.99 per year, $2.99 per month, or $24.99 one-time. No questionnaire, no tricks — an honest price shown plainly.
PRIVACY FIRST
Everything stays on your phone. No account required, no data ever leaves your device, no ads over the field where you type your weight.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Kwan Cheng Lee, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Kwan Cheng Lee
- Size
- 54.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Advertising
Health or Wellness Topics
- In-App Purchases
Yes
- Caliper Pro Lifetime USD 24.99
- Caliper Pro Monthly USD 2.99
- Caliper Pro Annual USD 14.99
- Copyright
- © Pebblestone Technologies Limited