Peptly: Peptide Calculator
Reconstitution & Dose Tracker
About
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.
What's New in Peptly
1.1.0
August 12, 2026
NEW — Add your own peptides The most-requested feature is here. Tap + in the Peptides tab to add any compound that isn't preloaded: name, vial size, water, and your typical dose. Your entries get their own cards under "Yours" and load into the calculator just like the built-ins. Also in this update: smoother purchase flow and small polish throughout.
MoreSubscription plans
Peptly Pro Yearly
Yearly access. Best value.
In-App Purchases
$29.99
Peptly Pro Lifetime
Lifetime access. No renewal.
Charts
Events
Developer apps
FAQ
What is Peptly?
Peptly is a medical app designed to simplify peptide reconstitution and dosing calculations. It offers instant math, visual guides, and a dose log, all processed on-device for user privacy.
How does Peptly handle calculations?
Peptly performs instant reconstitution math by taking vial size, BAC water amount, and target dose as inputs to provide the exact units to draw. This eliminates the need for manual calculations.
What peptides are supported by Peptly?
Peptly comes with over 12 pre-loaded research peptide profiles, including popular ones like BPC-157, TB-500, Ipamorelin, CJC-1295, Semaglutide, Tirzepatide, and Retatrutide.
Is Peptly safe for medical advice?
No, Peptly is a reconstitution calculator for research and educational reference only. It does not provide medical advice, prescriptions, or recommend human use. Always consult a licensed clinician before any injection.
What are the features of Peptly Pro?
Peptly Pro unlocks unlimited saved protocols, a full injection log with CSV export, smart dose reminders, and schedules with site rotation prompts. These features are available through a subscription.
What is the pricing for Peptly Pro?
Peptly Pro is available via an auto-renewing subscription at $29.99 per year (approximately $2.50 per month) or $4.99 per week. Specific weekly plans are listed as $0.99, $1.99, $2.99, and $4.99.
Does Peptly track user data?
No, Peptly is 100% on-device, meaning your log and data never leave your phone. It does not use accounts, servers, or third-party tracking, ensuring complete user privacy.
On which devices can I use Peptly?
Peptly is currently supported on iPhone and iPad devices, making it accessible for users on the Apple ecosystem.