Comparison

Pepzio vs PepStack

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

Head to head
About

Pepzio

Features
Read full description

Pepzio is the most precise peptide and hormone protocol tracker built for serious users. Log every dose, track vial levels, and never miss a reconstitution. The protocol calendar shows your full schedule at a glance, with smart alerts when vials expire or run low. KEY FEATURES • Protocol Calendar — daily dose schedule with completion tracking • Vial Tracker — monitor fill levels, expiry, and reconstitution dates • Dose Logger — log injections in seconds with site rotation tracking • Reconstitution Calculator — reconstitute any peptide with exact BAC water ratios; supports any syringe size • Lab Results — store and compare bloodwork over time • HealthKit Integration — syncs weight, sleep, and workout data to connect training load to your protocol • AI Daily Coach — personalized insights based on your protocol and activity WORKS FOR BPC-157, TB-500, CJC-1295, Ipamorelin, HGH, Semaglutide, Tirzepatide, Testosterone, TRT, and any custom compound. PRIVACY FIRST Your data stays on your device. Cloud sync is optional and fully encrypted. Not intended as medical advice. Always consult a qualified healthcare provider before starting any peptide or hormone protocol. Terms of Use: https://pepzioapp.com/terms Privacy Policy: https://pepzioapp.com/privacy

About

PepStack

Features
Read full description

PepStack is a reconstitution and dosing-math calculator and protocol scheduler for peptide researchers. CALCULATE WITH CONFIDENCE • Exact BAC-water volume, concentration, syringe units, and doses-per-vial • Supports U-100 / U-50 / U-40 / U-30 insulin syringes • Step-by-step reconstitution guide PLAN YOUR PROTOCOL • Build a weekly schedule and sync dose reminders • Log doses, track streaks, rotate injection sites • Reference library of common research peptides STAY ORGANIZED • Vial inventory with expiry and low-stock alerts • Optional Apple Health sync for weight & body-fat trends • Wellness journal and progress insights PepStack is an educational calculator. It is not medical advice and does not sell or supply any substance. Always consult a qualified professional. PepStack Pro is an auto-renewable subscription (monthly or annual). Payment is charged to your Apple ID; it auto-renews unless canceled at least 24 hours before the period ends. Manage or cancel in Settings. Pro unlocks unlimited protocols, dose logging, AI insights, and PDF export. Terms of Use (EULA): https://pepstack.co/terms Privacy Policy: https://pepstack.co/privacy

Screenshots

Pepzio4 screens
PepStack4 screens

Verdict

The call

The clearest difference is in-app purchases: Pepzio at none against PepStack's 2. PepStack's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. PepStack sells 2 in-app purchases, starting at $4.99 per month. Pepzio asks for nothing beyond the download.

Scorecard2 real differences Ā· 3 level
Pepzio versus PepStack: the parameters behind the verdict, then further details
ParameterPepzioPepStack
PriceFreeFree
AdsYesNo — better
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size24 MB9 MB
Age rating12+4+
DeveloperAlfredo GuidaDaniel Son, LLC

In-app purchases

None

Pepzio

No in-app purchases

2 purchases

PepStack

Subscriptions2
  • PepStack Pro Monthly$4.991 Month
  • PepStack Pro Annual7 Days trial$29.991 Year

Questions

Is Pepzio free?
Pepzio is free to download, with no in-app purchases.
Is PepStack free?
PepStack is free to download, with in-app purchases available.
Do Pepzio or PepStack have ads?
Pepzio shows ads; PepStack does not.

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