prtcl: Biohacking Tracker

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Everyone
10+
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Everyone
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About this app

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
Make protocols your own. Track habits, health measurements and patterns.
Updated on
Oct 1, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Financial info
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

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. 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.
Content rating
Everyone
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App support

About the developer
Dafydd Iestyn Llwyd
dafydd.llwyd@gmail.com
128 Rhondda Street SWANSEA SA1 6EU United Kingdom