Comparison

Peptide Ledger vs Peptide Protocol+

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

Head to head
About

Peptide Ledger

This app helps you meticulously log your peptide and GLP-1 research, including doses, vials, and progress, without relying on spreadsheets or subscriptions. It offers tools for reconstitution calculations and private data storage, with an optional Pro version for advanced features.

Highlights
  • Log doses, observations, and milestones
  • Track vial inventory, cost, and expiry
  • Forecast vial usage and reorder needs
  • Reconstitution Solver for calculations
  • Private data storage with optional iCloud sync
  • Home Screen and Lock Screen widgets
Read full description

Track your GLP-1 and peptide research without spreadsheets, scattered notes, or a monthly subscription. Peptide Ledger keeps your plans, doses, vials, reminders, progress, labs, and research context in one private ledger. It shows the important things first, like your next dose, what's left in each vial, and when you'll run out. The full detail is always one tap away. EVERYTHING IN ONE PLACE • Build and follow your own plans • Log doses, observations, check-ins, and milestones in a couple of taps • Track open and sealed vials, lots, concentration, cost, and expiry • See when each vial will run out and when to reorder • Review doses, plan changes, inventory, progress, and labs in Timeline • Import body weight from Apple Health when enabled • Reminders, Home Screen and Lock Screen widgets, and supported Siri actions SIMPLE OR FULL Simple mode keeps it to Now, Vials, and History. Full mode adds plans, forecasting, the Research Library, and deeper records, all with the same clean design. RECONSTITUTION TOOLS Work out concentration, draw volume, and vial-mix references from your own numbers with the Reconstitution Solver. The app does not recommend doses or mixing amounts. PRIVATE BY DESIGN • No account required • Data stored on your device by default • Optional private iCloud backup and sync • App Lock with Face ID, Touch ID, or passcode • No advertising trackers START FREE Try the Research Library, Now, reminders, the Reconstitution Solver, and the core tracking tools before deciding whether you need Pro. PEPTIDE LEDGER PRO Pro is a one-time purchase with no subscription. It unlocks higher tracking limits, unlimited inventory and history, forecasting, progress and lab tools, Vendor Book, advanced insights, widgets, and supported Siri actions. Peptide Ledger is intended for research tracking, reference organization, and personal recordkeeping. It does not provide medical advice, diagnosis, treatment, prescribing, dosing recommendations, or clinical decision support.

About

Peptide Protocol+

This app helps researchers manage peptide cycles with detailed protocol building, smart reminders, and progress tracking. It includes a built-in library for quick reference and prioritizes user privacy with local data storage and PIN protection.

Highlights
  • Build peptide cycles with dosage and frequency
  • Smart dose reminders
  • Review cycle history and add notes
  • Built-in peptide library
  • Local data storage and PIN protection
Features
Read full description

Peptide Protocol+ is the simplest peptide app on the market — built for researchers, by researchers. BUILD PROTOCOLS Set up peptide cycles with dosage, titration, frequency, and reconstitution details, all in one place. STAY ON SCHEDULE Smart reminders make sure you never miss a dose. REVIEW PROGRESS Analyze your cycle history, add research notes, and refine your stack over time. LEARN AS YOU GO A built-in peptide library gives you key reference info at a glance. PRIVATE BY DESIGN Your data stays on your device. Lock the app with a PIN, and your research data and PIN are encrypted locally — nothing is shared with third parties. Peptide Protocol+ is designed exclusively for research and educational purposes. Peptides discussed in this app may be research chemicals not approved for human use by the FDA or equivalent regulatory bodies in your country.

Screenshots

Peptide Ledger4 screens
Peptide Protocol+4 screens

Verdict

The call

The clearest difference is in-app purchases: Peptide Protocol+ at none against Peptide Ledger's 1. Peptide Protocol+ also leads on update cadence (daily vs every 10 days) and iOS requirement (15.1 vs 18.0). On price, rating, ratings volume and ads 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 Ledger sells 1 one-off in-app purchase. Peptide Protocol+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Peptide Ledger against 5.0 for Peptide Protocol+. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Peptide Ledger ships an update every 10 days, Peptide Protocol+ daily. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 5 level
Peptide Ledger versus Peptide Protocol+: the parameters behind the verdict, then further details
ParameterPeptide LedgerPeptide Protocol+
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 10 daysDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size20 MB42 MB
Age rating17+4+
DeveloperKris EmsoffJUSTIN MICHAEL CIFELLI

Customer experience

Peptide Ledger

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Peptide Protocol+

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Peptide Ledger

One-time1
  • Peptide Ledger Pro$2.99
None

Peptide Protocol+

No in-app purchases

Questions

Is Peptide Ledger free?
Peptide Ledger is free to download, with in-app purchases available.
Is Peptide Protocol+ free?
Peptide Protocol+ is free to download, with no in-app purchases.
Which has better reviews, Peptide Ledger or Peptide Protocol+?
Peptide Ledger and Peptide Protocol+ are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Peptide Ledger or Peptide Protocol+ have ads?
Neither Peptide Ledger nor Peptide Protocol+ shows ads.
Which is updated more often, Peptide Ledger or Peptide Protocol+?
Peptide Ledger ships an update every 10 days, and Peptide Protocol+ daily. Most recently, Peptide Ledger was updated on October 6, 2026 and Peptide Protocol+ on October 9, 2026.

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