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Best Weight Watcher Calculator Apps

217+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated May 2026

The best weight watcher calculator apps on iPhone average 4.7★ across 217+ titles — we've ranked them by what real users actually keep on their phones. Updated May 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
#20in 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

Room to Improve

  • 🐛 Bugs and glitches
  • 🐛 Inconsistent food database
  • 🐛 Difficulty finding/adding foods
Lose It! – Calorie Counter#2

Lose It! – Calorie Counter by FitNow, Inc.

Food Tracker for Weight Loss
Strong Contender
💪 Health & Fitness
4.8😊(763K ratings)
FreeAdsIn-App Purchases
#15in Health & Fitness
Lose It! – Calorie Counter screenshot 1
Lose It! – Calorie Counter screenshot 2
Lose It! – Calorie Counter screenshot 3
Lose It! – Calorie Counter screenshot 4
Lose It! – Calorie Counter screenshot 5

This app helps users achieve their weight loss goals by tracking calorie intake, nutrition, and exercise. It offers features like AI-powered meal logging, barcode scanning, and personalized diet plans to simplify the journey to a healthier lifestyle.

What We Love

  • 👍 Easy to use
  • 🚀 Comprehensive food database
  • 💡 Helpful for weight loss
  • 🚀 Syncs with fitness trackers

Room to Improve

  • 🐛 Inaccurate calorie/nutrition data
  • 💰 Paywall for basic features
  • 📢 Intrusive ads and upselling
Calorie Counter - MyNetDiary#3

Calorie Counter - MyNetDiary by MyNetDiary Inc.

Food Nutrition Macro Tracker
Worth Considering
💪 Health & Fitness
4.8😊(157K ratings)
FreeAdsIn-App Purchases
#18in Health & Fitness
Calorie Counter - MyNetDiary screenshot 1
Calorie Counter - MyNetDiary screenshot 2
Calorie Counter - MyNetDiary screenshot 3
Calorie Counter - MyNetDiary screenshot 4
Calorie Counter - MyNetDiary screenshot 5
Calorie Counter - MyNetDiary screenshot 6

Track your food intake and nutrition with a comprehensive calorie counter. Log meals quickly using a barcode scanner, photo analysis, or search. Monitor macros, vitamins, minerals, and more with detailed insights and progress charts.

What We Love

  • 👍 Easy to use
  • 🚀 Fast barcode scanning
  • 📊 Comprehensive data and analytics
  • 💪 Helped with weight loss and healthy habits

Room to Improve

  • 🐛 Inconsistent steps tracking
  • 📉 Reduced free features over time
  • 🔒 Privacy concerns with data access

More Weight Watcher Calculator apps to explore

4
BMI Calculator – Weight Loss
BMI Calculator – Weight Loss
BMI Calculator – Weight Loss
Calculate your ideal weight
Free

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.

Instant BMI calculation with animated gaugePersonalized health insightsIdeal weight recommendations
💪 Health & Fitness
(27K)
free with in-app purchases
5
Value Diary - Weight Loss Diet
Value Diary - Weight Loss Diet
Value Diary - Weight Loss Diet
Food, Exercise, Weight Tracker
Free

This app helps you achieve your weight loss goals by providing personalized diet plans, easy food tracking with a barcode scanner, and progress monitoring. It supports various diet types and integrates with fitness trackers.

Personalized weight loss plansFood and exercise trackingBarcode scanner for food items
💪 Health & Fitness
(3.6K)
free with in-app purchases
6
MyDietDaily -Lose Weight Smart
MyDietDaily -Lose Weight Smart
MyDietDaily -Lose Weight Smart
Diet Watchers Point Calculator
Free

Easily track your food intake, exercise, and weight progress with voice logging and extensive food databases. This app supports various diet plans and offers features like barcode scanning, custom meal creation, and community support to aid your weight loss journey.

Voice logging for food and exerciseExtensive food and recipe databasesBarcode scanner
💪 Health & Fitness
(1.6K)
free with in-app purchases
7
Food Score Calculator for Weight-Loss Nutrition
Food Score Calculator for Weight-Loss Nutrition
Food Score Calculator for Weight-Loss Nutrition
by Cloforce LLC
Free

Easily calculate a food score to simplify your weight loss journey. Break down complex nutritional information into a single, easy-to-understand number. Access a vast database of foods and barcodes, or input your own data for instant scoring.

Intuitive food score calculationMassive 5 million food database2 million barcode database search
💪 Health & Fitness
(827)
free
8
Happy Scale
Happy Scale
Happy Scale
Gewichtsverlustsverfolgung
Free

This app helps you understand your weight loss journey by analyzing scale fluctuations. It smooths out daily variations to reveal your true progress, predict future weights, and break down goals into manageable milestones.

See true progress with mathematical analysisSmooth out weigh-in fluctuationsPredict future weight
💪 Health & Fitness
(57K)
subscription
9
Smart - Food Score Calculator
Smart - Food Score Calculator
Smart - Food Score Calculator
Weight & Diet Macro Watchers
Free

Easily track your diet and nutrition when eating out. Access detailed calorie, carb, fat, and protein information for thousands of restaurant and grocery items. Make informed food choices on the go to stay on track with your fitness or diet plan.

Restaurant nutrition guideGrocery item nutritionBarcode scanning
🍔 Food & Drink
(2.4K)
free
10
AI Calorie Tracker by Yazio
AI Calorie Tracker by Yazio
AI Calorie Tracker by Yazio
Food tracker for weight loss
Free

This app helps you track your calorie intake and meals to achieve weight loss, muscle gain, or maintenance goals. It offers an AI-powered calorie counter, a vast food database, meal planning, and intermittent fasting support.

AI calorie trackerFood database with barcode scannerIntermittent fasting plans
💪 Health & Fitness
(49K)
freemium
11
Eato®: Calorie Tracker
Eato®: Calorie Tracker
Eato®: Calorie Tracker
Food, Macro, Nutrition Counter
Free

This app helps you manage your weight and health through calorie tracking, meal planning, and activity monitoring. It offers personalized plans, recipe suggestions, and progress tracking to support your wellness journey.

Calorie CounterBarcode ScanningAI Image Recognition
💪 Health & Fitness
(23K)
subscription
12
BMI Calculator‰
BMI Calculator‰
BMI Calculator‰
Body Mass Index Calculator
Free

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.

BMI calculationInput heightInput weight
💪 Health & Fitness
(24K)
ad-supported
13
Weight Monitor, BMI Calculator
Weight Monitor, BMI Calculator
Weight Monitor, BMI Calculator
Weight Loss Tracker & Ozempic
Free

This app helps you track your weight loss or gain journey with motivational tools and progress monitoring. Set goals, join challenges, and log body measurements to stay on track. Enjoy a secure, private experience with customizable features.

Weight tracking and BMI calculationBody measurement logging28-day healthy habit challenges
💪 Health & Fitness
(664)
free with in-app purchases
14
Weight Loss Simple Tracker App
Weight Loss Simple Tracker App
Weight Loss Simple Tracker App
Track daily goals & motivation
Free

This app helps users track their weight loss journey by recording daily weight, body fat percentage, and BMI. It offers visual progress tracking with graphs and avatar changes, along with reminders and notes to stay motivated. Premium features include an ad-free experience, data backup, and enhanced customization options.

Record weight and body fat percentageAutomatic BMI calculationAvatar changes with BMI level
💪 Health & Fitness
(2.1K)
freemium
15
Weight Watchers Scale
Weight Watchers Scale
Weight Watchers Scale
Weight Loss and Better Health
Free

Calculate your Body Mass Index (BMI) to determine your ideal weight. This app serves as a companion for weight loss or gain programs, helping you evaluate your current weight status. It supports metric and imperial systems and is suitable for users aged 7 and above.

BMI CalculationIdeal Weight DeterminationWeight Loss/Gain Program Companion
💪 Health & Fitness
(2)
free with in-app purchases
16
My Diet Coach - Weight Loss
My Diet Coach - Weight Loss
My Diet Coach - Weight Loss
Food tracker, calorie counter
Free

This app helps you lose weight by tracking your calorie intake and macronutrients. It offers a food diary, various diet plans, recipes, and daily recaps to guide your journey. Integrate with health apps for a comprehensive view of your progress.

Daily food diaryMacro trackerCalorie counting
💪 Health & Fitness
(24K)
subscription
17
BMI Calculator & Weight Track
BMI Calculator & Weight Track
BMI Calculator & Weight Track
Sleekest Weight Watchers App
Free

Calculate your Body Mass Index (BMI) and set personalized weight goals. This app offers a straightforward way to monitor your progress and stay on track with your health and fitness journey. Supports both metric and imperial systems for a seamless user experience.

BMI calculationPersonalized BMI goalsWeight target generation
💪 Health & Fitness
(0)
free
18
BMI Calculator・Weight Tracker
BMI Calculator・Weight Tracker
BMI Calculator・Weight Tracker
Lose or Gain for Happy Body
Free

Easily calculate your Body Mass Index (BMI) and track your weight progress. Visualize your trends with graphs, gain predictive insights, and set goals for your health journey. Supports metric and imperial systems, with Apple Watch integration.

BMI CalculationWeight TrackingMetric and Imperial Systems
💪 Health & Fitness
(494)
freemium
19
Fooducate: Nutrition Coach
Fooducate: Nutrition Coach
Fooducate: Nutrition Coach
Calorie Counter & Diet Tracker
Free

This app helps millions track food intake, exercise, and sleep to improve health and achieve weight loss goals. It analyzes food quality, counts macros, and offers personalized dietary advice for various health needs. Scan barcodes to uncover hidden ingredients and discover healthier alternatives.

Log food intake and exerciseAnalyze calorie quality and macrosScan product barcodes for nutrition grades
💪 Health & Fitness
(77K)
free with in-app purchases
20
BMI Calculator ~
BMI Calculator ~
BMI Calculator ~
Weight Loss Tracker
Free

Calculate your Body Mass Index (BMI) and track your weight loss journey. Set goals, monitor progress with daily tracking and weekly reminders, and gain insights through clear statistics and visualizations. Integrates with HealthKit for a comprehensive health overview.

BMI calculation by age and sex31-day weight-loss challengeDaily local weight tracking
💪 Health & Fitness
(524)
subscription

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