prtcl: protocol tracker
Habits, health & measurements
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Log your habits and the numbers you care about. After about two weeks, prtcl shows which habits line up with changes in your sleep, weight and more.
Your health protocols and measurements, together.
Make a protocol your own, follow your daily steps, and track the measurements that matter to you. Keep your routines, running times, weight, sleep and photo records in one place.
Built for people who like to measure things, prtcl gives you a practical logbook for biohacking, fitness and everyday health routines.
Make a protocol your own
Choose a template or build a protocol from scratch. Keep the steps that fit, drop the ones that don't, and add your own. Set targets and schedules as your routine changes.
Know what's on today
Follow your scheduled steps in one daily log. Tick off a task, enter a measurement or record a tally. Weighted adherence scores help you see how consistently you follow your plan.
Connect the dots
Explore correlations between your protocol steps and your markers. See how your routine relates to changes in your measurements and find patterns worth investigating. Correlations show associations, not proof of cause.
Track what matters to you
Log weight, sleep, running times and custom measurements. Record subjective markers such as energy or mood, and review your history in charts. Keep photo markers alongside your numbers with timeline, comparison and overlay views.
Bring your records with you
Import a .prtcl or JSON protocol file and customise it. Save a backup of your records and photos, export tracking data as CSV, and restore from a backup.
Start free
Try your first protocols, daily logging and your first confirmed pattern before subscribing. prtcl Pro shows every pattern after your first, and adds unlimited protocol adoptions, custom protocols and steps, plus 30-, 60- and 90-day adherence views. Some features shown in screenshots require Pro. Subscription prices and any available offers are shown in the app before purchase.
Your tracking records are stored on your device. No prtcl account is required. Subscriptions use RevenueCat and the platform's app store. See the privacy policy for details about optional health connections and other services.
prtcl is a tracking tool, not a medical device. It does not diagnose conditions or recommend treatments. Use it to keep records and discuss questions with a qualified health professional.
Terms of Use: https://rasena.co.uk/prtcl/terms-of-service.html
Privacy Policy: https://rasena.co.uk/prtcl/privacy-policy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Daily check-in: an optional reminder to log your day, at a time you choose. After your first logged day, prtcl asks once whether you would like one. It skips rest days and days you have already logged.
A guide on Today shows how many days you have logged while prtcl builds up enough data to find patterns.
The developer, Dafydd Llwyd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Dafydd Llwyd
- Size
- 36.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- prtcl Pro $7.99
- prtcl Pro $59.99
- Copyright
- © 2026 Rasena