Best Injection Calculator Apps

246+ iOS apps curated and reviewed

4.0 avg rating
18 free apps
Updated October 2026

Every iPhone needs a few good injection calculator apps. We benchmark 246+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Injection Calculator Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Peptide Calculator: DoseRxPeptide Calculator: DoseRxFree4.9★ (287)NoNoOct 2026
2NjectNject$4.994.0★ (126)NoNoOct 2026
3NurseCalcsNurseCalcsFree4.5★ (8)NoNoOct 2026
4Tracktide - Injection TrackerTracktide - Injection TrackerFree3.5★ (2)NoNoOct 2026
5Calculator - GetTogetherCalculator - GetTogetherFree—NoNoAug 2026
6Calculatir - CalculatorCalculatir - CalculatorFree—NoYesJun 2026
7Peptide Calculator: PepMathPeptide Calculator: PepMathFree—NoYesOct 2026
8VialVault CalculatorVialVault CalculatorFree—NoNoNov 2026

Top Picks for Injection Calculator

Peptide Calculator: DoseRx#1

Peptide Calculator: DoseRx by Arturo Gomez

Dose & Reconstitution Tracker
Editor's Choice
🏥 Medical
4.9(287 ratings)
Free
Peptide Calculator: DoseRx screenshot 1
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This app quickly calculates peptide draw volumes and insulin syringe units. It works offline, requiring no account, and provides clear results for various vial sizes and water amounts. It's designed for informational purposes only, with a strong disclaimer to consult medical professionals.

Nject#2

Nject by Keaton Benning, LLC

Injectable Information Center
Strong Contender
🏥 Medical
4.0😐(126 ratings)
$4.99
#14in Medical
Nject screenshot 1
Nject screenshot 2
Nject screenshot 3
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Nject screenshot 5

This app serves as a comprehensive resource for aesthetic professionals. It offers tools for dilution calculations, facilitates partnerships, and provides a live forum with experts. Users can also find assistance with vascular occlusion and access other valuable information.

What We Love

  • 👍 User-friendly and simple interface
  • 🎯 Accurate dosing calculations for toxin injections
  • 📱 Visual syringe markings aid learning
  • 🚀 Quick and efficient dosage conversions
  • 💬 Responsive developer addressing user feedback
  • 📚 Helpful tool for training new injectors
  • 🔄 Supports multiple syringe types

Room to Improve

  • 🐛 App crashes when selecting syringes
  • 🐛 Syringe dropdown menu shows 'no data' or won't populate
  • 🐛 Screen doesn't scroll to access calculate button
  • 🐛 Force closing on multiple devices
  • ❌ Limited syringe options available
  • ❌ Missing allergen/product selection (Botox vs Dysport vs others)
  • ❌ Syringe images unclear or incorrect
  • ❌ Semaglutide advertisement blocks functionality
  • ❌ No back button for navigation
  • ❌ Limited to unit-based medications only
NurseCalcs#3

NurseCalcs by James Crate

Calculations for Nurses
Worth Considering
🔧 Utilities
4.5(8 ratings)
Free
NurseCalcs screenshot 1
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This utility app helps nurses perform essential unit conversions for medication dosages. It quickly calculates the correct amount of medication to draw based on patient weight and available concentration.

More Injection Calculator apps to explore

FAQ about Injection Calculator

What are the best injection calculator apps for iPhone?
Peptide Calculator: DoseRx tops our injection calculator apps ranking as of October 2026, with a 4.9-star average from 287 App Store ratings, and it's free to download.
Yes — 18 of the top injection calculator apps we rank are free to download, including Peptide Calculator: DoseRx and NurseCalcs.
Peptide Calculator: DoseRx has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 246+ injection calculator apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.