# Protocol: HRV Tracker — supplement & experiment log > Scientifically test personal health claims using your own data. (iPhone/iPad app by AppEcho Labs ,LLC.) - Source: https://appshunter.io/ios/app/protocol-hrv-tracker/id6762954264 (this page in markdown: same URL + `.md`) - Developer: [AppEcho Labs ,LLC](https://appshunter.io/developer/1701185869) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Rating: 3.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 17+ - Requires: iOS 16.0 · 58 MB - Languages: American English - Released: 2026-06-25 - Data updated: 2026-07-21 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/protocol-hrv-tracker/id6762954264/reviews.md ## What is Protocol? Stop guessing. Start knowing. You read about magnesium for sleep. A podcast swears by cold plunges. Someone on TikTok says creatine fixed their afternoon crash. But does any of it work for YOU? Protocol turns a health claim into a real 21-day test on your own body — and gives you a straight answer. HOW IT WORKS 1. Paste a claim. A quote, an article link, a screenshot of a post. 2. Protocol builds a structured 21-day experiment and reads your Apple Health data. 3. At the end you get a verdict: Keep It, Drop It, Run It Longer, or Inconclusive. No hype. No "trust the process." Just your data, measured before and after, with the math done for you. WHAT YOU CAN TEST - Does magnesium actually improve your sleep? - Does cutting caffeine after 2pm raise your HRV? - Does a morning sunlight routine change your resting heart rate? - Does a zone-2 cardio block lower your average heart rate? - Does ashwagandha do anything for your sleep or stress? - Does an earlier dinner improve your overnight metrics? - Does cold exposure change your recovery? - Does a new supplement stack move any number that matters to you? If a claim touches something your phone or wearable already measures — sleep, HRV, resting heart rate, steps, activity, mindfulness — Protocol can test it. WHAT WE DON'T TEST Protocol is for everyday health claims, not medicine. We don't test prescription medications, anything a doctor is currently treating you for, or claims that need bloodwork or lab results to judge. Protocol does not diagnose, treat, or replace medical advice. If a claim belongs with your doctor, we'll tell you that instead of running a test. YOUR DATA STAYS YOURS Protocol reads the Apple Health data you choose to share, and only that. We don't sell it, we don't post it, and we don't share it with third parties. You can export everything or delete your account and data at any time. SUBSCRIPTION Protocol Pro is an auto-renewing subscription: - Monthly: $14.99 USD / month - Annual: $119.99 USD / year (save 33%) - 14-day free trial included with both plans Payment is charged to your Apple ID at confirmation of purchase. Subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your Apple ID will be charged for renewal within 24 hours of the end of the current period. You can manage or cancel your subscription anytime in your App Store account settings. Any unused portion of a free trial is forfeited when you purchase a subscription. Terms: https://runprotocol.app/terms Privacy: https://runprotocol.app/privacy Pick a claim. Run the test. Get your answer. ## Key features - Test health claims scientifically - Structured 21-day experiments - Integrates with Apple Health data - Provides clear 'Keep It' or 'Drop It' verdicts - Tests supplements, routines, and lifestyle changes - Data privacy and export options ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Protocol Pro (Annual) | $119.99 | per year | | Protocol Pro (Monthly) | $14.99 | per month | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/protocol-hrv-tracker/id6762954264/reviews.md ### 1/5 — Holy Claude *2026-07-18* The app is just fully made by AI it is also extremely snakey and greedy in the way it tries to rope you into the subscription. Is it a coincidence that every new supplement app happens to have almost exactly the same 8-21 day test feature? Its a prompt yall. Go back to drop shipping or do something you’re passionate about, this is bro slop. ## Frequently asked questions about Protocol ### What is Protocol? Protocol is a health and fitness app that allows you to scientifically test personal health claims related to supplements, routines, and lifestyle changes. It guides you through 21-day experiments using your Apple Health data to provide clear verdicts. ### How does Protocol test health claims? Protocol works by helping you define a claim, setting up a structured 21-day experiment, and then reading your Apple Health data. It measures your metrics before and after the test period to give you a data-driven answer. ### What kind of health claims can I test with Protocol? You can test claims about supplements like magnesium or ashwagandha, lifestyle changes like cutting caffeine, or routines like cold exposure. If a claim relates to data your phone or wearable measures (sleep, HRV, heart rate, activity), Protocol can test it. ### Does Protocol have ads? No, Protocol does not contain advertisements. The app offers a premium subscription for advanced features. ### What are the subscription options for Protocol Pro? Protocol Pro offers monthly and annual subscription plans. The monthly plan is $14.99 USD per month, and the annual plan is $119.99 USD per year, saving users 33%. Both plans include a 14-day free trial. ### How do I cancel my Protocol Pro subscription? You can manage or cancel your Protocol Pro subscription at any time through your Apple App Store account settings. Auto-renewal must be turned off at least 24 hours before the end of the current period to prevent charges for the next period. ### Is my data safe with Protocol? Yes, your data stays yours. Protocol only reads the Apple Health data you choose to share and does not sell, post, or share it with third parties. You can export your data or delete your account at any time. ### What is the age rating for Protocol? Protocol has an age rating of 17+, indicating it is intended for mature users. This is likely due to the nature of health data and the potential for users to test various health-related claims. ## Version history (last 2 releases) ### 1.0.1 — 2026-07-08 Your Signal, right at the top of Your data. We built you a portrait — a little waveform that's actually you. It's generated from your own sleep, recovery, heart rate, and movement, so no two people's ever look the same. Tap it and it flips over to show you the real numbers behind it. Still building your baseline? It'll look like it's still forming — that's normal, and it fills in as your data comes in. ### 1.0 — 2026-06-25 No release notes. ## More apps by AppEcho Labs ,LLC - [Brytsteps: Habit & AI Coach](https://appshunter.io/ios/app/brytsteps-habit-and-ai-coach/id6748541970) - [PoolOps: Pool Service & Route](https://appshunter.io/ios/app/poolops-pool-service-and-route/id6757132212) All apps by AppEcho Labs ,LLC: https://appshunter.io/developer/1701185869 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-21.*