Best Weight Watcher Calculator Apps

246+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated September 2026

The best weight watcher calculator apps on iPhone average 4.4★ across 246+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.

Compare top Weight Watcher Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1WeightWatchers ProgramWeightWatchers ProgramFree4.8★ (2.4M)YesYesSep 2026
2BMI Calculator – Weight LossBMI Calculator – Weight LossFree4.5★ (28K)NoYesSep 2026
3BMI Calculator‰BMI Calculator‰Free4.9★ (24K)YesNoSep 2026
4Food Score Calculator for Weight-Loss NutritionFood Score Calculator for Weight-Loss NutritionFree4.5★ (826)NoNoAug 2026
5Weight Calculator BMI BMR RDIWeight Calculator BMI BMR RDIFree3.8★ (9)YesYesSep 2026
6Weight Tracker, BMI calculatorWeight Tracker, BMI calculatorFreeYesNoMay 2026
7DietCalculator FreeDietCalculator FreeFree3.7★ (7)NoNoJul 2026
8BMI Calculator・Weight TrackerBMI Calculator・Weight TrackerFree4.8★ (508)NoYesSep 2026

Top Picks for Weight Watcher Calculator

WeightWatchers Program#1

WeightWatchers Program by WW International, Inc.

Weight Loss and Better Health
Editor's Choice
💪 Health & Fitness
4.8😊(2.4M ratings)
FreeAdsIn-App Purchases
#18in Health & Fitness
WeightWatchers Program screenshot 1
WeightWatchers Program screenshot 2
WeightWatchers Program screenshot 3
WeightWatchers Program screenshot 4
WeightWatchers Program screenshot 5
WeightWatchers Program screenshot 6

This app offers a science-backed weight loss tracker and personalized diet plans. It includes specialized support for weight-loss medications, AI-powered progress tracking beyond the scale, and flexible tools for various weight management goals. Connect with coaches and a supportive community for lasting results.

What We Love

  • 🚀 Biggest little helper ever
  • 🚀 Tracking made easy
  • 👍 Keeps me accountable
  • 👍 Motivating
  • 👍 User-friendly
  • 👍 Intuitive
  • 👍 Comprehensive
  • 👍 Syncs with fitness trackers
  • 👍 Barcode scanner
  • 👍 Recipes and meal planning
  • 👍 Community support

Room to Improve

  • 🐛 Bugs and glitches
  • 🐛 Inconsistent food database
  • 🐛 Difficulty finding/adding foods
  • 🐛 Syncing issues with fitness trackers
  • 🐛 Confusing navigation
  • 🐛 Limited recipe editing options
BMI Calculator – Weight Loss#2

BMI Calculator – Weight Loss by Steffen Mayer

Calculate your ideal weight
Strong Contender
💪 Health & Fitness
4.5😞(28K ratings)
FreeIn-App Purchases
BMI Calculator – Weight Loss screenshot 1
BMI Calculator – Weight Loss screenshot 2
BMI Calculator – Weight Loss screenshot 3

Calculate and track your Body Mass Index (BMI) with this user-friendly app. It provides personalized health insights, ideal weight recommendations, and supports various units and classification systems. Monitor your weight journey and understand health risks.

What We Love

  • 🚀 Easy to use
  • 📊 Helps track progress
  • 💪 Motivates weight loss

Room to Improve

  • 🤕 Can cause insecurity
  • 🚫 Inaccurate BMI calculations
  • 🚨 Promotes unhealthy behaviors
BMI Calculator‰#3

BMI Calculator‰ by Tim O's Studios, LLC

Body Mass Index Calculator
Worth Considering
💪 Health & Fitness
4.9😐(24K ratings)
FreeAds
BMI Calculator‰ screenshot 1
BMI Calculator‰ screenshot 2

Easily calculate your Body Mass Index (BMI) with this straightforward application. It provides a quick way to understand your weight status based on your height and weight.

What We Love

  • 🚀 Quick and easy to use
  • 👍 Straightforward interface
  • ✅ Accurate BMI calculations
  • 💡 Supports both metric and imperial units

Room to Improve

  • 🐛 Inability to input decimal values for height and weight
  • 🔍 Lacks advanced features like body composition analysis
  • 💸 Aggressive advertising interrupting usage
  • 🔧 Compatibility issues with newer OS versions

More Weight Watcher Calculator apps to explore

FAQ about Weight Watcher Calculator

What are the best weight watcher calculator apps for iPhone?
WeightWatchers Program tops our weight watcher calculator apps ranking as of September 2026, with a 4.8-star average from 2.4M App Store ratings, and it's free to download.
Yes — 20 of the top weight watcher calculator apps we rank are free to download, including WeightWatchers Program and BMI Calculator – Weight Loss.
WeightWatchers Program shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 246+ weight watcher calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides a science-backed weight loss tracker and personalized diet plans designed for lasting results. It supports various goals like losing weight, maintaining weight, and managing weight loss medication. The program offers tools for nutrition tracking, activity monitoring, and holistic health assessment.
Key features include a personalized diet plan, specialized support for GLP-1 and other weight-loss medications, an AI Body Scanner for 3D progress tracking, and a Weight Health Score for a holistic view of your health. It also offers the Points® Program, macro tracking, and integration with popular health devices.