Best Weight Loss Surgery Calculator Apps

248+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated August 2026

The best weight loss surgery calculator apps on iPhone average 4.2★ across 248+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Weight Loss Surgery Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Weight Loss Surgery CalculatorWeight Loss Surgery CalculatorFree4.7★ (9)NoNoMay 2026
2Baritastic - Bariatric TrackerBaritastic - Bariatric TrackerFree4.8★ (95K)NoNoAug 2026
3Weight Loss Surgery SelectorWeight Loss Surgery SelectorFree5.0★ (27)NoNoMay 2026
4Bariatric Surgery CalculatorBariatric Surgery CalculatorFree4.9★ (9)NoNoMay 2026
5My Weight Loss JourneyMy Weight Loss JourneyFree1.0★ (2)NoNoMay 2026
6Bariatric IQBariatric IQFree4.7★ (121)NoNoMay 2026
7BMI Calculator – Weight LossBMI Calculator – Weight LossFree4.5★ (28K)NoYesAug 2026
8BMI BSA Breast Reduction CalcBMI BSA Breast Reduction CalcFree5.0★ (4)NoNoMay 2026

Top Picks for Weight Loss Surgery Calculator

Baritastic - Bariatric Tracker#2

Baritastic - Bariatric Tracker by Metagenics, Inc.

Nutrition, Macros & Surgery
Strong Contender
🏥 Medical
4.8😊(95K ratings)
Free
Baritastic - Bariatric Tracker screenshot 1
Baritastic - Bariatric Tracker screenshot 2
Baritastic - Bariatric Tracker screenshot 3
Baritastic - Bariatric Tracker screenshot 4
Baritastic - Bariatric Tracker screenshot 5
Baritastic - Bariatric Tracker screenshot 6

This app is designed for individuals undergoing bariatric surgery or medically managed weight loss. It offers comprehensive tracking of nutrition, water intake, and medication reminders. Users can also log their journey with photos, journal entries, and access surgery-specific resources and recipes.

What We Love

  • 👍 Easy to use
  • 🚀 Helpful for tracking food, water, and vitamins
  • 💡 Customizable to individual needs
  • 🚀 Connects with other apps and devices

Room to Improve

  • 🐛 Glitchy and buggy after recent updates
  • 🔍 Limited food database and recipe options
  • 🔍 Difficulty editing saved recipes

More Weight Loss Surgery Calculator apps to explore

4
Bariatric Surgery Calculator
Bariatric Surgery Calculator
Bariatric Surgery Calculator
by The Cleveland Clinic Foundation
Free

This medical tool assists bariatric surgeons in evaluating patient risk and selecting the most suitable surgical procedure. It provides essential data for informed decision-making in bariatric surgery planning.

Patient risk assessmentProcedure selection guidanceSurgical planning aid
🏥 Medical
(9)
free
5
My Weight Loss Journey
My Weight Loss Journey
My Weight Loss Journey
by The University of Michigan
Free

This application helps patients explore bariatric surgery options by providing personalized risk and benefit estimates. It allows users to track their weight loss and connect with their care team to foster accountability and prevent weight regain.

Personalized risk/benefit estimates for bariatric surgeryWeight loss trackingLongitudinal care team connection
🏥 Medical
(2)
free
6
Bariatric IQ
Bariatric IQ
Bariatric IQ
by Nordclinic UAB
Free

This app helps individuals undergoing or recovering from weight loss surgery understand and adhere to new dietary guidelines. It allows users to check product suitability for their post-surgery stage, discover tailored meal ideas, and monitor nutrient intake. Users can also track their diet and receive feedback, all while connecting with a supportive community.

Post-surgery product suitability checkerTailored daily menu ideasNutrient intake monitoring
🏥 Medical
(121)
free
7
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
(28K)
free with in-app purchases
8
BMI BSA Breast Reduction Calc
BMI BSA Breast Reduction Calc
BMI BSA Breast Reduction Calc
Physician's Calculator
Free

Calculate Body Surface Area, Body Mass Index, Ideal Body Weight, and Schnur Weight for breast reduction surgery. This tool assists medical professionals and patients in making informed decisions about surgical procedures and medical necessity.

Body Surface Area calculationBody Mass Index calculationIdeal Body Weight calculation
🏥 Medical
(4)
free
9
Medical Weight Loss
Medical Weight Loss
Medical Weight Loss
by CareAlliance Health Services
Free

This app supports a comprehensive medical weight loss program, offering surgical and non-surgical options. It provides personalized care plans based on health analysis, tracks progress, hydration, and meals, and facilitates secure communication with healthcare providers.

Surgical and non-surgical weight loss optionsPersonalized diet, exercise, and behavioral plansProgress tracking
💪 Health & Fitness
(1)
free
10
Simple Diet Plan for Ideal Weight Loss - Daily Calorie Intake Counter with Healthy BMI Calculator to Lose Fat
Simple Diet Plan for Ideal Weight Loss - Daily Calorie Intake Counter with Healthy BMI Calculator to Lose Fat
Simple Diet Plan for Ideal Weight Loss - Daily Calorie Intake Counter with Healthy BMI Calculator to Lose Fat
by Jian Yih Lee
Free

This app helps you lose weight effectively by providing personalized insights based on your height and weight. It calculates BMI, BMR, and your ideal weight, offering daily calorie targets to achieve weekly weight loss goals.

Personalized weight loss insightsBMI calculationBMR calculation
💪 Health & Fitness
(11)
free
11
Easy Weight Loss Fitness Tips!
Easy Weight Loss Fitness Tips!
Easy Weight Loss Fitness Tips!
Meal Plan, Running, Motivation
Free

Discover easy weight loss and diet tips curated by experts in health and nutrition. This free app offers practical advice to help you shed pounds and stay motivated on your fitness journey.

Easy weight loss tipsDiet tipsSave favorite tips
🏥 Medical
(48)
free
12
Final Weight Loss-Keep Lose it
Final Weight Loss-Keep Lose it
Final Weight Loss-Keep Lose it
Calorie counter, diet adviser
Free

This app guides you through a 10-day meal adjustment plan to promote natural fat decomposition and weight loss. It includes exclusive music and simple relaxation techniques, focusing on a safe, drug-free approach.

10-day fat-reducing meal adjustmentExclusive weight-loss musicSimple self-relaxation and massage
💪 Health & Fitness
(26)
free with in-app purchases
13
MBSC - Weigh the Odds
MBSC - Weigh the Odds
MBSC - Weigh the Odds
by The University of Michigan
Free

This app provides healthcare providers with a tool to predict outcomes and VTE risk for bariatric surgery patients. It calculates projected weight loss, complication risks, and comorbidity resolution for common procedures. A VTE calculator offers risk-stratified treatment guidelines.

Predict bariatric surgery outcomesCalculate VTE riskProject weight loss
🏥 Medical
(6)
free
14
Bariatric Food Tracker - Bari
Bariatric Food Tracker - Bari
Bariatric Food Tracker - Bari
Nutrition, Macros & Diet Log
Free

This app helps individuals manage their post-weight loss surgery diet. It tracks meals, protein intake, water, vitamins, and weight progress. Designed for bariatric patients, it provides a structured approach to lifelong healthy habits.

Intuitive food loggingProtein-focused nutrition trackingWater and hydration monitoring
🏥 Medical
(55)
free
15
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
(2.2K)
freemium
16
BMI Calculator for Weight Loss
BMI Calculator for Weight Loss
BMI Calculator for Weight Loss
Body Mass Index & Ideal Weight
Free

Calculate your Body Mass Index (BMI) and ideal weight with this easy-to-use tool. Track your BMI to support weight loss efforts. Ideal for both men and women.

BMI calculationIdeal weight calculationWeight loss tracking support
💪 Health & Fitness
(2K)
ad-supported
17
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
18
Weight Calculator BMI BMR RDI
Weight Calculator BMI BMR RDI
Weight Calculator BMI BMR RDI
Calculate your ideal weight
Free

Calculate your Body Mass Index (BMI), ideal weight, Basal Metabolic Rate (BMR), and Recommended Daily Intake (RDI). This tool helps you understand your body's health metrics based on height and weight.

Body Mass Index (BMI) calculationIdeal weight estimationBasal Metabolic Rate (BMR) calculation
💪 Health & Fitness
(9)
free with in-app purchases
19
Bariatric Buddy
Bariatric Buddy
Bariatric Buddy
A New Weight Loss Community
Free

This app supports individuals on their post-bariatric surgery recovery journey. It offers a supportive community, personalized meal plans, nutrition tracking, goal setting, and educational resources within an easy-to-use interface.

Post-bariatric surgery supportCommunity forums and groupsPersonalized meal plans
💪 Health & Fitness
(33)
free
20
Get-2-Goal
Get-2-Goal
Get-2-Goal
by Geisinger System Services
Free

This tool assists patients with weight management after Roux-en-Y Gastric Bypass Surgery. It offers personalized weight goals, tracks progress over time, and calculates the probability of surviving the procedure and resolving diabetes.

Personalized weight goalsWeight tracking over timeProbability of surviving surgery
🏥 Medical
(12)
free

FAQ about Weight Loss Surgery Calculator

What are the best weight loss surgery calculator apps for iPhone?
Weight Loss Surgery Calculator tops our weight loss surgery calculator apps ranking as of August 2026, with a 4.7-star average from 9 App Store ratings, and it's free to download.
Yes — 20 of the top weight loss surgery calculator apps we rank are free to download, including Weight Loss Surgery Calculator and Baritastic - Bariatric Tracker.
Weight Loss Surgery Calculator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 248+ weight loss surgery calculator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
The Weight Loss Surgery Calculator is used to estimate potential weight loss from common bariatric surgeries. It helps calculate BMI, target weights, and percentage of excess body weight loss for both medical professionals and individuals considering these procedures.
The calculator can compute BMI, estimate potential weight loss after surgery, determine the potential final weight, calculate the weight needed for a specific BMI, and figure out both percent excess body weight loss and total body weight loss.