Comparison

Protocol vs PepLog

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

Head to head
About

Protocol

This app helps you manage your peptide schedules, doses, and records in one place. Track your progress, log injections, record measurements, and monitor daily well-being. It also offers AI-powered insights into your routine and supply.

Highlights
  • Organize compounds, schedules, and phases
  • Track upcoming doses and supply
  • Log injection details and site
  • Record body measurements over time
  • Daily check-ins for energy, sleep, mood
  • AI-powered record retrieval
Features
Read full description

Your protocol. In focus. Protocol brings your peptide schedule, doses and records into one carefully designed app. See what’s next, follow every phase and keep a clearer picture of your routine. EVERY PHASE. ONE CLEAR PLAN. Organise your compounds, schedules and protocol phases together. Follow your cycle progress, see upcoming doses and keep track of your remaining supply. YOUR DAY, AT A GLANCE. Open Today for the details that matter now. See your next scheduled dose, the peptide it belongs to and where you are in your protocol. EVERY DOSE. ON THE RECORD. Log what you took, when you took it and the injection site you used. Keep a dose history you can return to whenever you need the details. A PLACE FOR EVERY MEASUREMENT. Record body measurements alongside your injection-site history. Keep track of your chest, arms, waist, thighs and more over time. TRACK THE DOSE. AND THE DAY. Make a little room for how you feel. Daily check-ins capture energy, sleep, joints, mood and libido, adding context to your routine. YOUR RECORDS. JUST ASK. Ask Protocol AI about your schedule, supply and the details you’ve logged. Questions such as “When did I last log KPV?” bring your own records into the conversation. SEE TIMING IN PERSPECTIVE. Explore estimated dose-decay curves based on your logged doses. These are estimates, not measured levels in your body. Designed for iPhone. Considered down to the detail. Protocol requires a subscription. Protocol AI requires a compatible device with Apple Intelligence enabled. Subscription terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

PepLog

This app helps users manage peptide protocols by providing a private, on-device logbook. Quickly record doses, track vial usage, monitor consistency with streaks and history, and log weight over time. It also includes a unit converter for precise measurements.

Highlights
  • Log doses in seconds
  • Track vial contents and remaining amounts
  • Monitor logging consistency and history
  • Chart weight over time with goals
  • Unit converter for syringe measurements
  • Private, on-device data storage
Features
Read full description

PepLog is a medication reminder & logbook for people who manage a peptide protocol and want to keep track of their progress & history. It's built around one idea: recording a dose should take seconds, right when it happens, the way a food tracker works. WHAT YOU CAN DO • Log a dose in a couple of taps: amount, time, injection site, and a note • Track your vials: see how much you have left as you log, when each vial was mixed, and how long ago. Finished vials remain in your history • Track meals and macros in beta: scan food barcodes, log meals, and keep an eye on your daily totals • Revisit your eating history: tap a day to review, add, or edit meals. Recently scanned foods make repeat entries easier without adding calories until you log them • Progress photos: capture on a repeatable angle, compare any two side by side, and watch your timeline build over months • See what you've invested: record what a vial cost and PepLog shows your spend, your cost per logged dose, and how much of what you mixed you've used • Set reminders on your own schedule, with multiple times a day, and log or snooze straight from the notification • See your consistency: dose-logging streaks, badges, a week view, and a history of everything you've recorded, plus a separate meal streak • Track your weight and hydration over time, with your own optional goals • Make PepLog yours: choose English or Spanish and switch between light and dark mode in Settings NEW IN 1.5.0 • Spanish is here! Share PepLog with Spanish-speaking friends and family • Macro tracking in beta, including barcode scanning, recently scanned foods, meal history, and daily meal celebrations • Optional referral codes during onboarding to support the person who introduced you to PepLog • Improved sign-in and checkout recovery, with protection against repeated checkout taps • Appearance controls are now in Settings • The standalone in-app measurement calculator has been removed PEPLOG PRO PepLog is a subscription app. Choose a yearly plan with a 3-day free trial for eligible subscribers, or a monthly plan with no trial. Prices are always shown in the app before any purchase, payment is handled by Apple, and you can cancel anytime in your App Store settings. Installed before version 1.2? Your access stays as it was. PepLog is a personal record-keeping tool. It does not provide medical advice, dosing recommendations, or treatment guidance, and it does not recommend or endorse any substance. Always consult a qualified healthcare provider before starting, stopping, or changing any regimen. For adults 18+. Questions or feedback? Contact support@trypeplog.com. Privacy Policy: https://www.trypeplog.com/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Protocol4 screens
PepLog4 screens

Verdict

The call

The clearest difference is rating: Protocol at 5.0 against PepLog's 4.4. PepLog's advantage is monetization model (free vs subscription) and ratings volume (25 vs 1). On price, update cadence, ads and in-app purchases 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. Protocol sells 2 in-app purchases, starting at $2.99 per month and PepLog 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

Protocol holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: PepLog has 25 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
Protocol versus PepLog: the parameters behind the verdict, then further details
ParameterProtocolPepLog
PriceFreeFree
Rating5.0 (1 ratings) — better4.4 (25 ratings)
Positive reviews—100.0% of reviews
Number of ratings125 — better
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size42 MB34 MB
Age rating17+17+
DeveloperHandbook Digital LimitedMoises Olivares

Customer experience

Protocol

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

PepLog

All ratings25 ratings
Positive84.0%
Neutral0.0%
Negative16.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Protocol

Subscriptions2
  • Monthly$2.991 Month
  • Yearly$29.991 Year
2 purchases

PepLog

Subscriptions2
  • PepLog Pro Monthly$9.991 Month
  • PepLog Pro Yearly3 Days trial$29.991 Year

Questions

Is Protocol free?
Protocol is free to download, with in-app purchases available.
Is PepLog free?
PepLog is free to download, with in-app purchases available.
Which has better reviews, Protocol or PepLog?
Protocol is rated higher. Protocol averages 5.0 out of 5 from 1 ratings, while PepLog averages 4.4 from 25 ratings.
Do Protocol or PepLog have ads?
Neither Protocol nor PepLog shows ads.
Which is updated more often, Protocol or PepLog?
Protocol ships an update fortnightly, and PepLog fortnightly. Most recently, Protocol was updated on October 24, 2026 and PepLog on October 25, 2026.

Other comparisons