prtcl: protocol tracker
Dafydd Llwyd Health & Fitness iPhoneiPadiPod touch
prtcl: protocol tracker is a free Health & Fitness app for iPhone and iPad by Dafydd Llwyd. Requires iOS 15.0. Updated October 1, 2026.
- Price
- Free
- on the App Store
- Size
- 35 MB
- Age 4+
- Updated
- Oct 1
- 2026 · v1.3.2
Screenshots
About prtcl: protocol tracker
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
What’s new
Version 1.3.2 · Updated October 1, 2026
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.
App privacy
The developer, Dafydd Llwyd, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Purchases: Purchase History
Used for: Analytics, App Functionality
Alternatives to prtcl: protocol tracker
Looking for apps like prtcl: protocol tracker? Here are 6 similar apps on the App Store. The highest rated is More Life MVMT (5.0/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| prtcl: protocol tracker | – | Free | October 1, 2026 | |
| Fight ADPKD | – | Free | May 12, 2026 | Compare |
| More Life MVMT | 5.0 / 5 (3) | Free | Oct 16, 2026 | Compare |
| Biohacking Tracker: Biohackr | 5.0 / 5 (1) | Free | Nov 11, 2025 | Compare |
| iPro Anesthesia 2 | 5.0 / 5 (5) | Free | Oct 14, 2026 | Compare |
| IceBuddy: Cold Plunge Tracker | 4.6 / 5 (31) | Free | Sep 13, 2026 | Compare |
| Heart Rate Ninja | 4.8 / 5 (57) | Free | Oct 21, 2026 | Compare |