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Best Weight Gain Calculator Apps

235+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated May 2026

Out of 235+ weight gain calculator apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Weight Gain Calculator

MyFitnessPal: Calorie Counter#1

MyFitnessPal: Calorie Counter by MyFitnessPal, Inc.

Food, Fitness & Weight Tracker
Editor's Choice
💪 Health & Fitness
4.7😐(2.3M ratings)
FreeAdsIn-App Purchases
#1in Health & Fitness
MyFitnessPal: Calorie Counter screenshot 1
MyFitnessPal: Calorie Counter screenshot 2
MyFitnessPal: Calorie Counter screenshot 3
MyFitnessPal: Calorie Counter screenshot 4
MyFitnessPal: Calorie Counter screenshot 5
MyFitnessPal: Calorie Counter screenshot 6

Track your daily food intake, exercise, and weight goals with a user-friendly calorie counting app. Stay on top of your macros and diet while monitoring your progress towards a healthier lifestyle. Start your wellness journey today!

What We Love

  • 💪 Effective for weight loss/healthy eating
  • 🔍 Extensive food database
  • 📊 Helpful tracking and progress features
  • 🤝 Social features and community support

Room to Improve

  • 🐛 Buggy and glitchy app performance
  • 💰 Aggressive push for premium subscription
  • 📋 Inaccurate food data and calculations
BMI Calculator – Weight Loss#2

BMI Calculator – Weight Loss by Steffen Mayer

Calculate your ideal weight
Strong Contender
💪 Health & Fitness
4.6😞(25K ratings)
FreeIn-App Purchases
BMI Calculator – Weight Loss screenshot 1
BMI Calculator – Weight Loss screenshot 2
BMI Calculator – Weight Loss screenshot 3

Calculate your ideal weight with this BMI Calculator, suitable for all ages. Easily evaluate your weight using metric or imperial systems. Visit appovo.com/support for feedback or assistance.

What We Love

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

Room to Improve

  • 🤕 Can cause insecurity
  • 🚫 Inaccurate BMI calculations
  • 🚨 Promotes unhealthy behaviors
Calorie Counter - MyNetDiary#3

Calorie Counter - MyNetDiary by MyNetDiary Inc.

Food Nutrition Macro Tracker
Worth Considering
💪 Health & Fitness
4.8😊(150K 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

Looking for a sleek and smart calorie counter with a free barcode scanner and food tracker? MyNetDiary is the ultimate personal assistant for weight loss, dieting, and nutrition. Users love its intuitive design and effectiveness in reaching fitness goals. Try it out today!

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 Gain Calculator apps to explore

4
Monitor Your Weight
Monitor Your Weight
Monitor Your Weight
by Husain Al-Bustan
Free

Monitor Your Weight is an award-winning weight tracker app designed to help users stay motivated and reach their target weight through tracking and monitoring progress with statistics and graphs for single or multiple profiles. It suggests ideal weight, time needed to achieve it, calculates BMI, calorie intake, body fat percentage, and offers data synchronization, multi-language support, and integration with digital scales and Apple HealthKit. Start tracking your weight journey today!

💪 Health & Fitness
(22K)
5
BMI-Calculator: Weight Tracker
BMI-Calculator: Weight Tracker
BMI-Calculator: Weight Tracker
Weight Loss, BMI Tracker, IMC
Free

Calculate your Body Mass Index (BMI) and track your weight with a simple and easy-to-use tool, perfect for adults and children. Set a target weight, classify your weight as underweight, normal, overweight, or obese, and get a clear picture of your health.

💪 Health & Fitness
(143)
6
WeightDrop Weight Loss Tracker
WeightDrop Weight Loss Tracker
WeightDrop Weight Loss Tracker
Health Journal, Log & Diary
Free

WeightDrop is a revolutionary weight loss app that helps you track your progress, set goals, and stay motivated on your journey to a healthier you. Download now and start reaching your weight loss goals today!

💪 Health & Fitness
(3.4K)
7
Weight Diary Lite
Weight Diary Lite
Weight Diary Lite
daily weight loss tracker
Free

Track your weight loss journey effortlessly with a simple daily weight tracker that estimates your progress and goal achievement. Get instant insights with trend lines, BMI display, goal and calorie calculators, and more. Start reaching your fitness goals today!

💪 Health & Fitness
(6.9K)
8
AI Calorie Tracker by Yazio
AI Calorie Tracker by Yazio
AI Calorie Tracker by Yazio
Food tracker for weight loss
Free

Track your daily food intake, count calories, and set personalized goals with an intuitive app designed to help you maintain a healthy lifestyle. Stay on top of your nutrition and reach your fitness objectives effortlessly. Start your journey to a healthier you today.

💪 Health & Fitness
(48K)
9
WeightWatchers Program
WeightWatchers Program
WeightWatchers Program
Weight Loss and Better Health
Free

Develop sustainable, healthy habits with a weight loss program offering new app features for an easier journey to better health and wellness. Embark on your journey today towards a healthier lifestyle.

💪 Health & Fitness
(2.3M)
10
Healthify: AI Calorie Tracker
Healthify: AI Calorie Tracker
Healthify: AI Calorie Tracker
Weight loss, diet, fitness app
Free

Get personalized weight loss plans and track your progress with HealthifyMe. Log your meals, monitor your fitness activities, and receive guidance from nutritionists to achieve your health goals. Start your journey to a healthier you today!

💪 Health & Fitness
(6K)
11
Lose It! – Calorie Counter
Lose It! – Calorie Counter
Lose It! – Calorie Counter
Food Tracker for Weight Loss
Free

This application is a powerful tool for weight loss, offering calorie counting, nutrition tracking, and intermittent fasting features to help users reach their goals. With a comprehensive food library, barcode scanner, and other useful tools, it's a convenient way to achieve a healthier lifestyle and track progress. Start your weight loss journey now!

💪 Health & Fitness
(757K)
12
Lose Weight at Home in 30 Days
Lose Weight at Home in 30 Days
Lose Weight at Home in 30 Days
Home Workout for Weight Loss
Free

An app designed to help users lose weight at home in 30 days, offering systematic workouts, diet plans, and progress tracking. Features include various workout routines, calorie tracking, and video guidance with no equipment required. Subscription-based with pricing details provided, offering a comprehensive solution for weight loss and fitness goals.

💪 Health & Fitness
(21K)
13
Weight loss tracker - BMI
Weight loss tracker - BMI
Weight loss tracker - BMI
Daily weight loss tracker
Free

Track your daily weight, monitor your progress, and calculate your BMI with ease using our user-friendly weight loss tracker application. Log your measurements, moods, remarks, and pictures to create the perfect weight diary. Start reaching your ideal weight today!

💪 Health & Fitness
(990)
14
BMI Calculator + Weight Loss
BMI Calculator + Weight Loss
BMI Calculator + Weight Loss
Lose weight. Improve your BMI.
Free

Track your weight loss journey with a comprehensive BMI Calculator and Weight Tracker! Set goals, receive motivational quotes, and monitor your progress with detailed body data tracking. Download now for a healthier life!

💪 Health & Fitness
(1.6K)
15
BMI Calculator for Weight Loss
BMI Calculator for Weight Loss
BMI Calculator for Weight Loss
Body Mass Index & Ideal Weight
Free

A handy app that calculates your Body Mass Index (BMI) to help you on your weight loss journey. Stay on track with your health goals!

💪 Health & Fitness
(1.7K)
16
Weight Monitor, BMI Calculator
Weight Monitor, BMI Calculator
Weight Monitor, BMI Calculator
Body Scan, GLP-1, Ozempic Jabs
Free

Track your weight and calculate your BMI with this app designed to help you monitor your weight loss progress effortlessly. Stay motivated and on track towards your fitness goals easily. Start tracking today!

💪 Health & Fitness
(625)
17
Omo: Healthy Weight Loss App
Omo: Healthy Weight Loss App
Omo: Healthy Weight Loss App
Lose weight with psychology
Free

Achieve your weight loss goals with Omo, a psychology-based app that guides you in building healthy habits. Benefit from a weight-loss course, calorie counter, nutrition tracking, and expert support to lose weight effectively and sustainably. Start your journey to better health today!

💪 Health & Fitness
(33K)
18
My Diet Coach - Weight Loss
My Diet Coach - Weight Loss
My Diet Coach - Weight Loss
Food tracker, calorie counter
Free

Track your food, count calories, and reach your weight loss goals with My Diet Coach. Plan meals, follow diets, explore recipes, and stay on track with daily monitoring. Get ready to look and feel your best - start your journey now!

💪 Health & Fitness
(24K)
19
Foodvisor - AI Calorie Counter
Foodvisor - AI Calorie Counter
Foodvisor - AI Calorie Counter
Diet Tracker for Weight Loss
Free

Foodvisor is a nutrition tracking app that uses AI to analyze users' meals from photos, providing detailed nutritional information. Easily monitor your food intake and make healthier choices with this innovative tool.

💪 Health & Fitness
(16K)
20
Weigh In: Weight Tracker
Weigh In: Weight Tracker
Weigh In: Weight Tracker
The simple weight tracker
Free

Track your weight loss or gain with this simple and easy-to-use weight tracker. Set goals, add notes, visualize progress with customizable graphs, and get reminders to weigh in. Personalize with themes and export data easily.

💪 Health & Fitness
(585)