PepSync

Privacy policy

A plain-English overview of how PepSync handles information on the website and in the app.

Last updated: 2026-11-03

PepSync is operated by Much Ado Studio, an independent app developer based in Sydney, Australia (“we”, “us”). This policy covers the PepSync website (peptidecalcs.com) and the PepSync app for iPhone and Android.

The short version

  • The web calculator runs in your browser. Your numbers stay there unless you tap a “get the app” link.
  • In the app, your protocols, doses, check-ins, and logs are stored on your device. There is no account, and we don't upload them.
  • The app is a tracking tool. It records the doses you enter and does not calculate or recommend doses.
  • We use analytics (Google Analytics and Mixpanel) and app-install attribution (AppsFlyer) to improve PepSync and see whether people found the app through our website.
  • The app doesn't track you across other companies' apps or websites, and on iPhone it never asks to.
  • We don't sell your personal information.

Information we collect

Website: analytics via Google Analytics and Mixpanel, such as page views, device and browser type, referring pages, approximate (city-level) location derived from your IP address, and which calculator or peptide you used. Calculator inputs are processed in your browser; the numbers you enter are not sent to our analytics.

Website to app:when you tap a “get the app” link, the link carries a random identifier, the calculator you last used, and the vial, water, and dose amounts you last entered. They pass through AppsFlyer to the app after you install it, so the app can pre-fill the peptide, dose, and vial size you entered (you can change them) and we can connect your website and app usage. The app does not calculate anything from them.

App: the protocol data you create (vials, doses, schedules, injection logs, check-ins, weights) is stored locally on your device and is not uploaded. We collect product analytics via Mixpanel: screens and features used, actions such as adding a protocol or logging, skipping, or snoozing a dose (with the name of the peptide and simple details such as the skip reason or how you rated your day, but not your dose amounts, notes, or weights), the answers you choose during onboarding (for example your goal, your main concern, and the peptides you are interested in), device type, operating system, app version, approximate location derived from your IP address, and purchase events. These are linked to a random app user ID, not your name or email. Apple and Google may share crash reports with us if you allow it in your device settings.

Attribution and purchases: AppsFlyer receives install, open, and purchase events and device identifiers (on iPhone an app-specific ID, never your advertising ID; on Android the Google advertising ID unless you have deleted it), to tell us whether an install came from our website or elsewhere. In-app purchases are processed by Apple or Google, and your subscription status is managed by RevenueCat. If you subscribe on our website, Link (Stripe) processes the payment as our reseller and receives your email, payment details and billing country; we receive your email, plan and payment status, never your full card details. If you email us, we receive your message and email address.

Third parties we use

  • Apple App Store — app distribution and in-app purchases/subscriptions on iPhone.
  • Google Play — app distribution and in-app purchases/subscriptions on Android.
  • Stripe and Link — checkout, payment processing, tax and receipts for subscriptions bought on our website.
  • RevenueCat — manages subscription entitlements (receives a random app user ID and purchase status, plus your email for website purchases, not your protocol data).
  • Mixpanel — product analytics for the website and the app.
  • AppsFlyer — install attribution and the website-to-app link. We don't run ads, and we don't use it to track you across other companies' apps or websites.
  • Google Analytics — website usage measurement.
  • Vercel — website hosting and server logs.

We share only what these providers need to operate PepSync, or as required by law. We don't sell your personal information, and your protocol data never leaves your device.

How we use information

To operate and improve PepSync, fix problems, understand which features and pages are useful, manage subscriptions, respond to support requests, and keep the service secure.

Medical information

The PepSync website offers educational calculators and guides. The PepSync app is a tracking tool: it records the doses you enter, reminds you when they're due, and keeps your history. It does not calculate or recommend doses. Neither diagnoses, prescribes, or replaces guidance from a licensed clinician or pharmacy. Please don't send sensitive medical information by email unless you are comfortable doing so.

Your choices and rights

You can request access to, correction of, or deletion of information we hold about you, and you can delete app data on your device at any time by deleting the app. On Android you can delete your advertising ID (Settings → Privacy → Ads). You can block website analytics with your browser's privacy settings or a content blocker. Depending on where you live (for example, the EEA/UK under GDPR or California under CCPA/CPRA), you may have additional rights. To make a request, email support@muchadostudio.com.

Children

PepSync is intended for adults aged 18 and over and is not directed to children. We don't knowingly collect personal information from children.

International users

Your information may be processed in countries other than your own, including the United States, under appropriate safeguards.

Changes

We'll post updates here with a new “last updated” date.

Contact

Much Ado Studio — support@muchadostudio.com. You can also visit support or browse our sources.