Best Free Peptide Calculator Apps

249+ iOS apps curated and reviewed

4.2 avg rating
19 free apps
Updated August 2026

Peptide Calculator is the household name in free peptide calculator, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Free Peptide Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Peptide Calculator: PepCalcPeptide Calculator: PepCalcFree4.7★ (378)NoNoAug 2026
2InnerGlow Peptides CalculatorInnerGlow Peptides CalculatorFreeNoNoJul 2026
3Peptide Calculator: DoseRxPeptide Calculator: DoseRxFree4.8★ (102)NoNoAug 2026
4Peptide Calculator: PepFlowPeptide Calculator: PepFlowFree4.8★ (359)NoYesSep 2026
5Peptides CalculatorPeptides CalculatorFree was $2.994.3★ (169)NoYesAug 2026
6Peptide Calculator AppPeptide Calculator AppFree4.4★ (538)NoYesAug 2026
7Peptra: Peptide CalculatorPeptra: Peptide CalculatorFreeNoYesAug 2026
8Peptide Calculator & DosagePeptide Calculator & DosageFree4.8★ (121)NoYesAug 2026

Top Picks for Free Peptide Calculator

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.

Peptide Calculator: DoseRx#3

Peptide Calculator: DoseRx by Arturo Gomez

Dose & Reconstitution Tracker
Worth Considering
🏥 Medical
4.8(102 ratings)
Free
Peptide Calculator: DoseRx screenshot 1
Peptide Calculator: DoseRx screenshot 2
Peptide Calculator: DoseRx screenshot 3

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.

More Free Peptide Calculator apps to explore

4
Peptide Calculator: PepFlow
Peptide Calculator: PepFlow
Peptide Calculator: PepFlow
Tracker, reconstitution, dose
Free

Calculate peptide dosages and reconstitution accurately and quickly. Track your injections with timely reminders and live activities. Save custom formulas and sync across devices for seamless management.

Peptide dosage calculationReconstitution guidanceInjection time tracking
💪 Health & Fitness
(359)
free with in-app purchases
5
Peptides Calculator
Peptides Calculator
Peptides Calculator
Reconstitution Calculator
Free
$2.99 | 100% OFF

This app helps users log, organize, and manage their peptide preparation process. It offers features for calculating reconstitution details, saving vial records, and accessing educational content. An optional subscription unlocks unlimited entries, enhanced tracking, and multi-device sync.

Log and calculate reconstitution detailsSave and organize vial recordsBrowse peptide reference library
💪 Health & Fitness
(169)
freemium
6
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
7
Peptra: Peptide Calculator
Peptra: Peptide Calculator
Peptra: Peptide Calculator
Tracker, Calendar & AI Guide
Free
💪 Health & Fitness
(0)
8
Peptide Calculator & Dosage
Peptide Calculator & Dosage
Peptide Calculator & Dosage
Peptide Dose Calculator App
Free

Easily calculate peptide dosages with this straightforward tool. It helps determine reconstitution ratios and injection volumes based on your inputs. Manage your peptide inventory, track your progress, and review past dosing with helpful features.

Peptide dosage calculationReconstitution ratio determinationInjection volume calculation
💪 Health & Fitness
(121)
freemium
9
CalcPep - Peptide Calculator
CalcPep - Peptide Calculator
CalcPep - Peptide Calculator
Dosing & Reconstitution Math
Free
💪 Health & Fitness
(0)
10
Peptide: Tracker & Calculator
Peptide: Tracker & Calculator
Peptide: Tracker & Calculator
Dose reminder & weight loss
Free
💪 Health & Fitness
(0)
11
Peptide Tracker : Glp1
Peptide Tracker : Glp1
Peptide Tracker : Glp1
Peptide & GLP-1 Calculator
Free
🔧 Utilities
(0)
12
Signal: Peptide Calculator
Signal: Peptide Calculator
Signal: Peptide Calculator
Reconstitution reference tool
Free

This tool simplifies peptide reconstitution calculations with a comprehensive database of research-backed compounds. It offers precise math for various syringe types, evidence-based reference ranges, and safety warnings. An optional subscription unlocks advanced features like saved protocols and scheduling.

Precise reconstitution math for multiple syringe types65 compound database with evidence tier ratingsClinical and community reference ranges with research context
💪 Health & Fitness
(2)
freemium
13
My Peptide Pal
My Peptide Pal
My Peptide Pal
by QuickShot Studios LLC
Free
💪 Health & Fitness
(0)
14
DNA/RNA/Protein and General Mol. Weight Calculator
DNA/RNA/Protein and General Mol. Weight Calculator
DNA/RNA/Protein and General Mol. Weight Calculator
by Wiley
Free

Calculate molecular weights for DNA, RNA, proteins, peptides, and chemical formulas. Features a database of common compounds and chemical elements for quick selection. Useful for chemists and biochemists needing rapid calculations.

Calculate molecular weight for nucleic acid sequencesCalculate molecular weight for amino acid sequencesCalculate molecular weight for chemical formulas
🔧 Utilities
(4)
free
15
PepStack - Peptide Calculator
PepStack - Peptide Calculator
PepStack - Peptide Calculator
Peptide Dosing & Tracking
Free
💪 Health & Fitness
(0)
16
Peptide Tracker Log & Reminder
Peptide Tracker Log & Reminder
Peptide Tracker Log & Reminder
Track doses, vials, and sites
Free

Organize your peptide protocols, track doses, manage vial inventory, and monitor weight trends. Includes built-in calculators and optional reminders to ensure consistency. Access educational content and a helpful assistant for general information.

Protocol creation with custom schedulesDose logging with notes and site trackingVial inventory management
💪 Health & Fitness
(1.8K)
free
17
Peptide Dose
Peptide Dose
Peptide Dose
Peptide Tracker and Dose Log
Free
💪 Health & Fitness
(0)
18
Peptide Tracker App | Peply
Peptide Tracker App | Peply
Peptide Tracker App | Peply
Peptide Tracker
Free
💪 Health & Fitness
(0)
19
Peptide++
Peptide++
Peptide++
by Chris Powers
$9.99
🔧 Utilities
(0)
20
Peptide Tracker - Pepty
Peptide Tracker - Pepty
Peptide Tracker - Pepty
Dose Calculator, GLP-1 Tracker
Free

Manage peptide protocols, doses, inventory, and injection sites with this free, ad-free application. It offers smart calculators for reconstitution and blend calculations, along with customizable reminders to keep you on schedule. Track your progress and export your data easily.

Customizable peptide protocolsDose logging and inventory managementInjection site tracking
💪 Health & Fitness
(1)
free

FAQ about Free Peptide Calculator

What are the best free peptide calculator apps for iPhone?
Peptide Calculator: PepCalc tops our free peptide calculator apps ranking as of August 2026, with a 4.7-star average from 378 App Store ratings, and it's free to download.
Peptide Calculator: PepCalc has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 249+ free peptide calculator 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.

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