Best Fat Scientist Apps

250+ iOS apps curated and reviewed

4.4 avg rating
18 free apps
Updated August 2026

With an average user rating of 4.4★, the fat scientist category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Fat Scientist Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Peptide Calculator: PepCalcPeptide Calculator: PepCalcFree4.7★ (378)NoNoAug 2026
2Shotsy GLP-1 TrackerShotsy GLP-1 TrackerFree4.8★ (30K)NoYesAug 2026
3Glapp — Smart GLP-1 TrackerGlapp — Smart GLP-1 TrackerFree4.7★ (816)NoYesAug 2026
4Peptide Calculator AppPeptide Calculator AppFree4.4★ (538)NoYesAug 2026
5GLP-1 Tracker by GlucoPalGLP-1 Tracker by GlucoPalFree4.8★ (2.7K)NoYesAug 2026
6PediaRexPediaRexFreeNoYesAug 2026
7Weightless AIWeightless AIFreeNoYesAug 2026
8MDCalc Medical CalculatorMDCalc Medical CalculatorFree4.9★ (52K)NoNoAug 2026

Top Picks for Fat Scientist

Peptide Calculator: PepCalc#1

Peptide Calculator: PepCalc by David Dzeveckij

Dosage & Reconstitution Tool
Editor's Choice
🏥 Medical
4.7(378 ratings)
Free
Peptide Calculator: PepCalc screenshot 1
Peptide Calculator: PepCalc screenshot 2
Peptide Calculator: PepCalc screenshot 3

This tool simplifies peptide dosage and reconstitution calculations. It accurately determines injection volumes and the correct amount of water for mixing, converting results to insulin syringe units. Designed for researchers and wellness enthusiasts, it ensures precise and confident peptide administration.

Shotsy GLP-1 Tracker#2

Shotsy GLP-1 Tracker by Shotsy

GLP1 Shot - Zepbound, Wegovy
Strong Contender
💪 Health & Fitness
4.8😊(30K ratings)
FreeIn-App Purchases
#63in Health & Fitness
Shotsy GLP-1 Tracker screenshot 1
Shotsy GLP-1 Tracker screenshot 2
Shotsy GLP-1 Tracker screenshot 3
Shotsy GLP-1 Tracker screenshot 4
Shotsy GLP-1 Tracker screenshot 5
Shotsy GLP-1 Tracker screenshot 6

This app helps users track their GLP-1 medications for weight loss and diabetes management. It logs doses, monitors side effects, and visualizes medication levels and health progress. Stay on schedule with smart reminders and integrate with Apple Health for a comprehensive view of your journey.

What We Love

  • 💻 Easy to use
  • 📊 Helpful data visualizations
  • 🕰️ Accurate estimated medication levels
  • 📈 Effective weight loss tracking

Room to Improve

  • 🐛 Occasional data sync issues
  • 💰 Subscription cost may be high for some
  • 🔢 Difficulty with weight unit conversions
Glapp — Smart GLP-1 Tracker#3

Glapp — Smart GLP-1 Tracker by Glapp Inc.

Mounjaro Zepbound Wegovy GLP1
Worth Considering
💪 Health & Fitness
4.7(816 ratings)
FreeIn-App Purchases
Glapp — Smart GLP-1 Tracker screenshot 1
Glapp — Smart GLP-1 Tracker screenshot 2
Glapp — Smart GLP-1 Tracker screenshot 3
Glapp — Smart GLP-1 Tracker screenshot 4
Glapp — Smart GLP-1 Tracker screenshot 5
Glapp — Smart GLP-1 Tracker screenshot 6

Track your GLP-1 medication, monitor weight loss, and understand your body's response to treatments like Ozempic and Wegovy. This community-driven app helps you log doses, analyze effectiveness, and receive personalized tips for sustainable lifestyle changes. It also manages medication supply and prioritizes user privacy.

More Fat Scientist apps to explore

4
Peptide Calculator App
Peptide Calculator App
Peptide Calculator App
Pepcalc Compound & Dosage
Free

This app serves as a comprehensive peptide dosage calculator for researchers and enthusiasts. It offers features like saving calculations, tracking peptide usage, and a reconstitution guide. Users can also explore mixing ratios and export results to PDF.

Syringe size optionsSave and edit calculationsPeptide tracking and history
🏥 Medical
(538)
free with in-app purchases
5
GLP-1 Tracker by GlucoPal
GLP-1 Tracker by GlucoPal
GLP-1 Tracker by GlucoPal
For GLP1s, Zepbound, Mounjaro
Free

This app helps users track their GLP-1 medication doses, weight, nutrition, and side effects. It offers features like automatic site rotation for injections, AI-powered meal tracking, and dose reminders. Monitor your progress privately and share insights with your doctor.

Track medication doses (injection & pill)Automatic injection site rotationWeight trend tracking and charts
💪 Health & Fitness
(2.7K)
free with in-app purchases
6
PediaRex
PediaRex
PediaRex
Paediatric dose calculator
Free

This educational tool helps medical students practice pediatric dose calculations and pharmacology. It offers offline practice for various medication forms and includes a comprehensive study guide with clinical notes and warnings. An optional Pro version removes ads and adds advanced features.

Weight-based pediatric dose practiceOffline calculation for syrups, drops, tablets, injectablesStudy guide with clinical notes and warnings
📚 Education
(0)
free with in-app purchases
7
Weightless AI
Weightless AI
Weightless AI
GLP-1 & Body Composition Care
Free
🏥 Medical
(0)
8
MDCalc Medical Calculator
MDCalc Medical Calculator
MDCalc Medical Calculator
Clinical Decision Support
Free

This app provides over 900 evidence-based medical calculators, risk scores, and clinical tools for healthcare professionals. It offers offline functionality, expert insights, and CME tracking to support patient care at the bedside. Tools are developed and validated by board-certified physicians.

900+ evidence-based calculatorsOffline functionalityExpert insights and commentary
🏥 Medical
(52K)
free
9
Rx Dose Calc
Rx Dose Calc
Rx Dose Calc
Pediatric Dosags & Calculators
$1.99

This medical reference tool assists healthcare professionals in calculating pediatric medication dosages. It offers offline access to information for over 70 drugs, along with various medical calculators and reference tools.

Ad-free full versionOffline functionalityPediatric doses for 70+ drugs
🏥 Medical
(5)
paid
10
Prescription Refill Calculator
Prescription Refill Calculator
Prescription Refill Calculator
Days Supply, Quantity & Dates
Free
🏥 Medical
(0)
11
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
12
My Peptide Pal
My Peptide Pal
My Peptide Pal
by QuickShot Studios LLC
Free
💪 Health & Fitness
(0)
13
Vialwise - Peptide Calculator
Vialwise - Peptide Calculator
Vialwise - Peptide Calculator
Peptide calculator & tracker
Free

This app helps users calculate peptide dosages with a dual-direction calculator and access a library of researched peptide information. It allows users to log doses, track vial inventory, and export protocol data. The core calculator and library remain free, with advanced tracking features available via a one-time purchase.

Dual-direction peptide calculatorResearched peptide library with citationsProtocol saving and logging
💪 Health & Fitness
(2)
free with in-app purchases
14
DoseWise: GLP-1 Dose Tracker
DoseWise: GLP-1 Dose Tracker
DoseWise: GLP-1 Dose Tracker
Doses, side effects & muscle
Free
💪 Health & Fitness
(0)
15
DosesPro: GLP-1 Tracker
DosesPro: GLP-1 Tracker
DosesPro: GLP-1 Tracker
Ozempic Mounjaro Wegovy Dose
Free
💪 Health & Fitness
(0)
16
NeoTools
NeoTools
NeoTools
Neonatology Resources
$19.99

A medical reference app for healthcare professionals caring for newborns. It offers clinical calculations, a handbook for common challenges, and detailed drug information with dosing and interactions.

Clinical calculations for neonatologyHandbook for common newborn challengesDetailed drug information and dosing
🏥 Medical
(0)
paid
17
Doserly
Doserly
Doserly
Peptide, Meds & Health Tracker
Free
💪 Health & Fitness
(0)
18
DoseFlow - Medication Tracker
DoseFlow - Medication Tracker
DoseFlow - Medication Tracker
Pill Tracker & Reminder
Free
💪 Health & Fitness
(0)
19
PepCue: Peptide/GLP-1 Tracker
PepCue: Peptide/GLP-1 Tracker
PepCue: Peptide/GLP-1 Tracker
Draw Calculator & Dose Log
Free

Manage peptide doses, calculate draw amounts, and track vial inventory with this comprehensive health and fitness app. It helps organize your routine, monitor costs, and provides insights into peptide levels and progress over time.

Dose logging with detailsReconstitution and draw calculationVial inventory management
💪 Health & Fitness
(4)
freemium
20
Easy Meds
Easy Meds
Easy Meds
Nursing Pharmacology Made Easy
Free
📚 Education
(0)

FAQ about Fat Scientist

What are the best fat scientist apps for iPhone?
Peptide Calculator: PepCalc tops our fat scientist apps ranking as of August 2026, with a 4.7-star average from 378 App Store ratings, and it's free to download.
Yes — 18 of the top fat scientist apps we rank are free to download, including Peptide Calculator: PepCalc and Shotsy GLP-1 Tracker.
Peptide Calculator: PepCalc has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 250+ fat scientist apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
PepCalc is a dedicated tool for calculating accurate peptide dosages and reconstitution volumes. It helps users determine precise injection amounts and the correct amount of water for mixing, ensuring confidence in peptide administration.
To calculate dosage, you input the desired dose (mcg or mg), the total peptide amount in the vial, and the reconstitution volume. PepCalc then instantly provides the result in both mL and insulin syringe units.