Comparison

Peptide Protocol vs Peptly

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

Head to head
About

Peptide Protocol

This app helps users track peptide doses, manage vial inventory, and monitor weekly insights like energy, sleep, and mood. It offers a reconstitution calculator and features for biohackers and longevity enthusiasts, with local-first data storage for privacy.

Highlights
  • Dose logging for peptides
  • Reconstitution calculation helper
  • Vial inventory with refill reminders
  • Weekly insight charts (energy, sleep, mood, weight)
  • Protocol pausing and auto-resuming
  • Injection site rotation
  • Side-effect pattern review
  • Local-first data storage
Features
Read full description

Peptide Protocol is a shot log for people following a peptide or GLP-1 routine their clinician set. Log every dose in seconds: the compound, the amount you took and the injection site, exactly as you enter them. Get reminders at the times you choose. Rotate injection sites with a body map that shows where you went last. Keep track of your vials: what you have on hand, mix and expiry dates, and refill alerts before you run out. Check in on energy, sleep, appetite, side effects and weight, and see your own logs side by side week by week. Works for semaglutide, tirzepatide, BPC-157, CJC-1295, ipamorelin, GHK-Cu and 30+ more compounds. Pause a protocol with a return date and it picks up again on the day you choose. Your records stay on your iPhone. IMPORTANT Peptide Protocol is a personal log. It does not compute, suggest, recommend or adjust doses, and it does not provide medical advice, diagnosis or treatment. Enter the dose and amounts your prescriber gave you, and talk to a qualified healthcare professional before any medical decision. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://peptide-protocol.app/privacy/ Terms of Service: https://peptide-protocol.app/terms/

About

Peptly

This app simplifies peptide reconstitution and dosing for researchers and biohackers. It provides instant calculations, visual syringe guides, and a dose log, all processed on-device for privacy. Unlock advanced features like reminders and export options with a subscription.

Highlights
  • Instant reconstitution math
  • Visual syringe guide
  • Pre-loaded peptide profiles
  • On-device dose log
  • Smart dose reminders
  • Save and reload protocols
  • CSV export
Features
Read full description

Peptly is a private log for the peptides you already use. Write down each entry, get a reminder when the next one is due, follow your weight over time, and keep notes on your vials. Every peptide amount in Peptly is one you typed. FREE • Log one peptide, with Today and a reminder • Injection sites, with your next site suggested from your log • Your weight, with a 30-day trend • The last 30 days of your history • Plain-language profiles of 23 peptides PEPTLY PRO • Stacks: log every peptide you use • Unlimited reminders, with Log and Skip right in the notification • Your full history, with CSV export • Your long-range weight trend, and a 30-day projection: an estimate from your own entries if your recent trend continues, not a prediction or medical advice • Estimated levels for semaglutide and tirzepatide, from your own log and published half-lives. Estimated, not measured. • Vials: what the label says, the date and your notes, exactly as you wrote them TODAY See what's planned today. Log an entry as planned with one tap, or skip it, and your history stays complete. INJECTION SITES Pick a site as you log, and Peptly suggests the one you used longest ago, so rotating is easy. PRIVATE BY DESIGN No account to create. Your log stays on your iPhone or iPad. Peptly Pro is an auto-renewing subscription (weekly, monthly or yearly) or a one-time lifetime purchase; your region's price shows in the app before you buy. Payment is charged to your Apple ID account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel them in your Apple ID account settings. Peptly is a personal record-keeping tool. It never calculates, suggests or recommends an amount to take, and it is not medical advice. Follow the directions of your healthcare provider. Terms of Use: https://thepeptly.com/terms/ Privacy Policy: https://thepeptly.com/privacy/

Screenshots

Peptide Protocol4 screens
Peptly4 screens

Verdict

The call

The clearest difference is monetization model: Peptly at freemium against Peptide Protocol's subscription. Peptly also leads on ads (none vs shown). Peptide Protocol's advantage is rating (5.0 vs 4.8). On price, ratings volume, update cadence 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. Peptide Protocol sells 11 in-app purchases, starting at $4.99 per 7 days and Peptly sells 10 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Peptide Protocol holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 14 and 34 respectively.

UpkeepUpdate frequency

Peptide Protocol ships an update every 5 days, Peptly weekly. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Peptide Protocol versus Peptly: the parameters behind the verdict, then further details
ParameterPeptide ProtocolPeptly
PriceFreeFree
Rating5.0 (14 ratings) — better4.8 (34 ratings)
Positive reviews100.0% of reviews—
Number of ratings1434 — better
Update frequencyEvery 5 days — betterWeekly
AdsYesNo — better
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.017.6 — better
Further details — not scored
Size97 MB29 MB
Age rating12+12+
DeveloperLudovic PUAUDBaris Bingor

Customer experience

Peptide Protocol

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Peptly

All ratings34 ratings
Positive97.1%
Neutral0.0%
Negative2.9%

In-app purchases

11 purchases

Peptide Protocol

Subscriptions10
  • Pro Weekly2 variants$4.997 Days
  • Peptide Protocol Pro3 Days trial$4.997 Days
  • Pro Monthly$7.991 Month
Show 7 more
  • Pro Monthly$9.991 Month
  • PeptideProtocol Pro Monthly14 Days trial$9.991 Month
  • Pro Yearly — Special Offer$34.991 Year
  • Pro Yearly$44.991 Year
  • Pro Yearly$59.991 Year
  • Pro Yearly Trial7 Days trial$59.991 Year
  • Pro Yearly — First Year Offer1 Year trial$59.991 Year
One-time1
  • Pro Lifetime$99.99
10 purchases

Peptly

Subscriptions7
  • Peptly Pro Weekly$0.997 Days
  • Peptly Pro Weekly7 Days trial$1.997 Days
  • Peptly Pro Weekly$2.997 Days
Show 4 more
  • Peptly Pro Weekly$4.997 Days
  • Peptly Pro Yearly$19.991 Year
  • Peptly Pro Yearly$29.991 Year
  • Peptly Pro Yearly$49.991 Year
One-time3
  • Peptly Pro Lifetime$29.99
  • Peptly Pro Lifetime$49.99
  • Peptly Pro Lifetime$79.99

Questions

Is Peptide Protocol free?
Peptide Protocol is free to download, with in-app purchases available.
Is Peptly free?
Peptly is free to download, with in-app purchases available.
Which has better reviews, Peptide Protocol or Peptly?
Peptide Protocol is rated higher. Peptide Protocol averages 5.0 out of 5 from 14 ratings, while Peptly averages 4.8 from 34 ratings.
Do Peptide Protocol or Peptly have ads?
Peptide Protocol shows ads; Peptly does not.
Which is updated more often, Peptide Protocol or Peptly?
Peptide Protocol ships an update every 5 days, and Peptly weekly. Most recently, Peptide Protocol was updated on October 24, 2026 and Peptly on October 24, 2026.

Other comparisons