Comparison

Peptides Calculator vs Peptide Stack

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Peptides Calculator

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.

Highlights
  • Log and calculate reconstitution details
  • Save and organize vial records
  • Browse peptide reference library
  • Access educational videos and articles
  • Track weight over time
  • Multi-device sync (Pro)
Features
Read full description

Peptides Calculator — the all-in-one peptide tracker and reconstitution calculator. Log, organize, and manage your peptide preparation process in one place: reconstitution math, BAC water (bacteriostatic water) amounts, syringe units and mL, vial records, and dose logs. Whether you're engaging in research, personal study, or general wellness tracking, this peptides calculator keeps your information clear and organized. Free Features: Peptide reconstitution calculator — total amount (mg), diluent/BAC water volume, and units per insulin syringe or mL GLP-1 friendly logging — record units, dates, and notes for any peptide protocol Vial tracker — save and organize vial records with preparation dates and usage logs Injection log with site tracking Browse a general peptide reference library Access educational videos and articles Track your weight over time with a simple chart No login required for basic features More Built-In Tools: Fasting timer with Live Activities Meal and macro logging Lab results tracking and charts Dose reminders, streaks, home-screen widgets, Apple Watch app, and iMessage protocol sharing Go Pro – Unlock Even More (Subscription Required): Unlimited vials and log entries Weight & calendar tracking with enhanced charts Multi-device sync (sign in with Apple or Google for secure data access) Priority customer support Early access to new features and Pro-only updates All current and future premium features unlocked A subscription is required for unlimited access to Pro features. You can choose a monthly or yearly plan. Subscription auto-renews unless canceled at least 24 hours before the end of the current period. Manage your subscription anytime in your App Store account settings. Disclaimer Peptides Calculator is intended strictly for personal, educational, and informational purposes. This app is not a medical device and does not provide medical advice, diagnosis, treatment recommendations, or dosage guidance. The app does not suggest or imply the use of any specific peptides, medications, or substances. It is a self-managed logging tool for personal tracking only. Users are advised to consult with a licensed physician or medical professional before making any decisions related to health, medications, supplements, or treatment options. Peptides Calculator is not affiliated with any pharmaceutical company, healthcare institution, or regulatory authority. The app is not intended to replace professional medical consultation, diagnosis, or care. Privacy Policy: https://www.peptidescalculator.app/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Peptide Stack

Track your GLP-1 medication doses and monitor your weight progress. This app supports various peptide medications and custom stacks, helping you manage your health journey.

Highlights
  • GLP-1 medication tracking
  • Weight progress monitoring
  • Custom peptide stack support
  • Dose logging
  • Subscription management
Features
Read full description

Whether you're on a GLP-1 medication, semaglutide, tirzepatide, or running a custom peptide stack. Subscription Details: - Monthly Plan: $9.99/month (auto-renews monthly) - Annual Plan: $49.99/year ($4.17/month, auto-renews annually) - Payment will be charged to your Apple ID account at confirmation of purchase - Subscription automatically renews unless canceled at least 24 hours before the end of the current period - Your account will be charged for renewal within 24 hours prior to the end of the current period - You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase Terms of Use (EULA): https://peptidestack.io/terms Privacy Policy: https://peptidestack.io/privacy

Screenshots

Peptides Calculator4 screens
Peptide Stack4 screens

Verdict

The call

The clearest difference is ads: Peptides Calculator at none against Peptide Stack's shown. Peptides Calculator also leads on ratings volume (173 vs 5). Peptide Stack's advantage is update cadence (daily vs every 5 days) and review sentiment (67% vs 55%). On price, rating, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Peptides Calculator sells 11 in-app purchases, starting at $9.99 per month and Peptide Stack sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.3 for Peptides Calculator against 4.2 for Peptide Stack. That said, the two scores are not equally well evidenced: Peptides Calculator has 173 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 55% of Peptides Calculator's written reviews are positive against 67% of Peptide Stack's.

UpkeepUpdate frequency

Peptides Calculator ships an update every 5 days, Peptide Stack daily. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
Peptides Calculator versus Peptide Stack: the parameters behind the verdict, then further details
ParameterPeptides CalculatorPeptide Stack
PriceFreeFree
Rating4.3 (173 ratings) — better4.2 (5 ratings)
Positive reviews54.5% of reviews66.7% of reviews — better
Number of ratings173 — better5
Update frequencyEvery 5 daysDaily — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.6 — better18.0
Further details — not scored
Size77 MB13 MB
Age rating17+12+
DeveloperSphnix, IncBrandon King

Customer experience

Peptides Calculator

All ratings173 ratings
Positive82.1%
Neutral5.2%
Negative12.7%
Written reviews55 reviews
Positive54.5%
Neutral20.0%
Negative25.5%

Peptide Stack

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Peptides Calculator

Reported bugs

2 issues
  • All vials disappeared after an update
  • Unable to find how to update streaks and last taken

Requested features

4 requests
  • Add shot tracker to record when a dose was taken
  • Allow editing of vial information and dosing
  • Add option to set cycle length in weeks, not just days
  • Allow changing dose for different weeks when titrating

Peptide Stack

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

Peptides Calculator

Subscriptions10
  • Monthly Premium Access7 Days trial$9.991 Month
  • Family Monthly Premium Access$14.991 Month
  • Premium Plus7 Days trial$14.991 Month
Show 7 more
  • Premium Plus Family (Montly)$19.991 Month
  • Pro Loyalty Yearly$54.991 Year
  • Yearly Premium Access7 Days trial$99.991 Year
  • Premium Plus Loyalty Yearly$99.991 Year
  • Family Yearly Premium Access$149.991 Year
  • Premium Plus (Yearly)7 Days trial$149.991 Year
  • Premium Plus — Family (Yearly)$199.991 Year
One-time1
  • Remove Ads$2.99
2 purchases

Peptide Stack

Subscriptions2
  • Monthly Plan7 Days trial$9.991 Month
  • Annual Plan7 Days trial$49.991 Year

Questions

Is Peptides Calculator free?
Peptides Calculator is free to download, with in-app purchases available.
Is Peptide Stack free?
Peptide Stack is free to download, with in-app purchases available.
Which has better reviews, Peptides Calculator or Peptide Stack?
Peptides Calculator is rated higher. Peptides Calculator averages 4.3 out of 5 from 173 ratings, while Peptide Stack averages 4.2 from 5 ratings.
Do Peptides Calculator or Peptide Stack have ads?
Peptide Stack shows ads; Peptides Calculator does not.
Which is updated more often, Peptides Calculator or Peptide Stack?
Peptides Calculator ships an update every 5 days, and Peptide Stack daily. Most recently, Peptides Calculator was updated on October 12, 2026 and Peptide Stack on October 2, 2026.

Other comparisons