Comparison

Peptide 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

Peptide Calculator

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.

Highlights
  • Peptide dosage calculation
  • Reconstitution guidance
  • Injection time tracking
  • Custom formula saving
  • Widget for daily doses
  • Reminders and Live Activities
  • iCloud sync across devices
Features
Read full description

Get the right peptide dosage in seconds and track your shot's time so you never miss it. Simply enter your peptide information, see the optimal syringe size, and dosage, and save your favorite formulas and cycles to your device. Visualize today’s doses with widget and get Reminders and Live activities so you never miss a shot. With iCloud sync, your peptides, dosages and schedules stay up to date across all your Apple devices—no hassles, just accurate results and easy tracking every time. ======================= If you purchase Peptide Calculator, the payment will be charged to your iTunes account. If you purchase a weekly, monthly or yearly subscription, your account will automatically be charged for renewal within 24 hours prior to the end of the current subscription period unless you disable auto-renew. You can turn off auto-renewal at any time by going to your Account Settings on the App Store after purchase. ======================= Terms of Service: https://pepflow.app/terms-of-service/ Privacy Policy: https://pepflow.app/privacy-policy/

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

Peptide Calculator4 screens
Peptide Stack4 screens

Verdict

The call

The clearest difference is rating: Peptide Calculator at 4.8 against Peptide Stack's 4.2. Peptide Calculator also leads on ads (none vs shown) and ratings volume (396 vs 5). Peptide Stack's advantage is update cadence (daily vs every 2 weeks). On price, in-app purchases, monetization model and device support 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. Peptide Calculator sells 11 in-app purchases, starting at $0.99 per 7 days 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

Peptide Calculator holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Peptide Calculator has 396 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 77% of Peptide Calculator's written reviews are positive against 67% of Peptide Stack's.

UpkeepUpdate frequency

Peptide Calculator ships an update every 2 weeks, Peptide Stack daily. The most recent releases landed on September 23, 2026 and September 15, 2026 respectively.

Scorecard5 real differences · 5 level
Peptide Calculator versus Peptide Stack: the parameters behind the verdict, then further details
ParameterPeptide CalculatorPeptide Stack
PriceFreeFree
Rating4.8 (396 ratings) — better4.2 (5 ratings)
Positive reviews76.9% of reviews — better66.7% of reviews
Number of ratings396 — better5
Update frequencyEvery 2 weeksDaily — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.018.0
Further details — not scored
Size135 MB13 MB
Age rating4+12+
Developerkeinois OUBrandon King

Customer experience

Peptide Calculator

All ratings396 ratings
Positive95.5%
Neutral1.0%
Negative3.5%
Written reviews26 reviews
Positive76.9%
Neutral7.7%
Negative15.4%

Peptide Stack

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

In-app purchases

11 purchases

Peptide Calculator

Subscriptions11
  • PepFlow PRO (Weekly)3 Days trial$0.997 Days
  • PepFlow PRO (Monthly)3 Days trial$2.991 Month
  • PepFlow PRO (Weekly)3 Days trial$2.997 Days
Show 8 more
  • Peptide PRO (Weekly)3 Days trial2 variants$2.997 Days
  • PepFlow PRO (Weekly)3 Days trial3 variants$3.997 Days
  • PepFlow PRO (Annual)3 Days trial$8.991 Year
  • PepFlow PRO (Monthly)3 Days trial2 variants$9.991 Month
  • Peptide PRO (Annual)3 Days trial$14.991 Year
  • Peptide PRO (Annual)3 Days trial$19.991 Year
  • PepFlow PRO (Annual)3 Days trial2 variants$29.991 Year
  • Peptide PRO (Annual)3 Days trial$44.991 Year
2 purchases

Peptide Stack

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

Questions

Is Peptide Calculator free?
Peptide 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, Peptide Calculator or Peptide Stack?
Peptide Calculator is rated higher. Peptide Calculator averages 4.8 out of 5 from 396 ratings, while Peptide Stack averages 4.2 from 5 ratings.
Do Peptide Calculator or Peptide Stack have ads?
Peptide Stack shows ads; Peptide Calculator does not.
Which is updated more often, Peptide Calculator or Peptide Stack?
Peptide Calculator ships an update every 2 weeks, and Peptide Stack daily. Most recently, Peptide Calculator was updated on September 23, 2026 and Peptide Stack on September 15, 2026.

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