Comparison

Paul's Strength Book 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

Paul's Strength Book

Features
Read full description

Welcome to Paul's Strength Book, the ultimate training app for fitness enthusiasts! Our app is designed to help you achieve your fitness goals and maximize your gains. With weekly check-ins, progress tracking, RPE scale, weight tracking, and nutrition log, you'll stay motivated and on track to reach your fitness goals. Our comprehensive workout stats feature allows you to track your progress in real-time. You can easily monitor your performance, identify areas for improvement, and celebrate your successes. Our exercise video library provides detailed instructions and demonstrations for each exercise, ensuring that you perform each move with proper form and technique. But that's not all! Our app is packed with additional resources, including a macro calculator, recipes, eBooks, and so much more. With our macro calculator, you can easily calculate your daily caloric needs and macronutrient goals. Plus, our recipe and eBook resources provide meal ideas, inspiration, and motivation to help you stay on track. Key Features: Weekly check-ins Progress tracking RPE scale Weight tracking Nutrition log Workout stats Exercise video library Macro calculator Additional resources including recipes & eBooks Sync your account with HealthKit to track all your health and fitness data in one place including nutrition, steps and bodyweight. and much more… Get started on your fitness journey today with Paul's Strength Book!

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

Paul's Strength Book4 screens
Peptide Stack4 screens

Verdict

The call

The clearest difference is in-app purchases: Paul's Strength Book at none against Peptide Stack's 2. Paul's Strength Book also leads on ads (none vs shown) and iOS requirement (15.1 vs 18.0). Peptide Stack's advantage is update cadence (daily vs fortnightly). On price 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 Stack sells 2 in-app purchases, starting at $9.99 per month. Paul's Strength Book asks for nothing beyond the download.

UpkeepUpdate frequency

Paul's Strength Book ships an update fortnightly, Peptide Stack daily. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
Paul's Strength Book versus Peptide Stack: the parameters behind the verdict, then further details
ParameterPaul's Strength BookPeptide Stack
PriceFreeFree
Rating—4.2 (5 ratings) — better
Positive reviews—66.7% of reviews
Number of ratings—5 — better
Update frequencyFortnightlyDaily — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better18.0
Further details — not scored
Size74 MB13 MB
Age rating17+12+
DeveloperThe PBE Group PTY LTDBrandon King

In-app purchases

None

Paul's Strength Book

No in-app purchases

2 purchases

Peptide Stack

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

Questions

Is Paul's Strength Book free?
Paul's Strength Book is free to download, with no in-app purchases.
Is Peptide Stack free?
Peptide Stack is free to download, with in-app purchases available.
Do Paul's Strength Book or Peptide Stack have ads?
Peptide Stack shows ads; Paul's Strength Book does not.
Which is updated more often, Paul's Strength Book or Peptide Stack?
Paul's Strength Book ships an update fortnightly, and Peptide Stack daily. Most recently, Paul's Strength Book was updated on October 13, 2026 and Peptide Stack on October 2, 2026.

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