# N of 1: Self-Experiments — Your lab for self-improvement > Personalized self-experimentation app for individual health and habit trials. (iPhone/iPad app by Paul Fenyves.) - Source: https://appshunter.io/ios/app/n-of-1-self-experiments/id6770629089 (this page in markdown: same URL + `.md`) - Developer: [Paul Fenyves](https://appshunter.io/developer/1896758424) - Category: Health & Fitness - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 17+ - Requires: iOS 15.0 · 15 MB - Languages: American English - Released: 2026-06-09 - Data updated: 2026-10-14 - Monetization: free ## What is N of 1? Does magnesium actually improve your sleep? Does a new habit really make a difference? Everyone's body is different — and population averages from clinical studies don't predict your individual response. N = 1 is a self-experimentation app that lets you run your own rigorous personal trials, using the same two-phase framework as professional clinical research. How it works Each trial has two phases: • Control Phase — You track your baseline without any intervention, so you know where you're starting from. • Treatment Phase — You add the intervention and keep tracking the same metrics. At the end, N = 1 compares your two phases s in plain English, what actually changed in your own data. The science, without the lab coat Daily check-ins take under 60 seconds. Results with a plain-English summary — no jargon, no exaggerated claims. Just your numbers. New here? Start with the easiest trial in th Ten-Minute Morning Walk for Energy is a 2-weuy — just a short walk each morning. It's the fastest way to see how the whole process wormething longer. A growing library of trials Beyond the walk trial, N = 1's library cover • Sleep — magnesium glycinate, L-theanine • Energy — caffeine, vitamin B-12 • Mood — EPA omega-3, saffron • Anxiety — ashwagandha, lavender (Silexan) • Migraine — magnesium glycinate, vitamin B2 Each trial comes with its own tracked metric references. When your trial ends, you get a full results breakdown — averages, charts, adata showed. Reminders keep you on track: a daily check-iake your supplement or do your habit during the treatment phase. Your data stays privateused only to show you your own results and, in anonymous aggregate form, what similar trher users. N = 1 is a tool for self-observation, not a ice. Always check with a doctor beforestarting a new supplement. More trials coming soon. ## Key features - Run personal scientific trials - Two-phase framework (control & treatment) - Track baseline metrics - Analyze intervention impact - Plain-English results - Daily check-ins under 60 seconds ## Is N of 1 safe? Not enough ratings yet to assess N of 1. ## Is N of 1 legit? N of 1: Self-Experiments has limited verification signals. The AppsHunter Legitimacy Score for N of 1 is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Frequently asked questions about N of 1 ### What is N of 1 App? N of 1 App is a self-experimentation tool that helps you run personal trials to understand how specific interventions affect your body. It uses a scientific framework to compare your baseline data with data collected during an intervention phase. ### How does N of 1 App work? The app guides you through two phases: a control phase to track your baseline and a treatment phase where you introduce an intervention. It then compares the data from both phases to show you what changed. ### What kind of experiments can I run with N of 1 App? You can experiment with various interventions, such as the impact of magnesium on sleep, or the effectiveness of a new habit. The app provides an example experiment for magnesium glycinate and sleep. ### How long do daily check-ins take with N of 1 App? Daily check-ins with N of 1 App take under 60 seconds, making it easy to consistently track your progress and data. ### Are the results from N of 1 App easy to understand? Yes, results are presented as clear charts with a plain-English summary, avoiding jargon and exaggerated claims. The focus is on presenting your personal numbers. ### What devices does N of 1 App support? N of 1 App is available on iPhone, iPad, and iPod, indicating broad Apple device compatibility. ### Is N of 1 App suitable for younger users? N of 1 App has an age rating of 17+, suggesting it is intended for adult users due to the nature of self-experimentation and data analysis. ### Does N of 1 App have ads? No, N of 1 App does not contain advertisements, providing an uninterrupted user experience. ## Version history (last 3 releases) ### 1.2(3) — 2026-09-29 Thanks for using N of 1! This update includes: - A new "Ten-Minute Morning Walk for Energy" trial — the easiest way to get started, nothing to buy - A quick intro on the sign-in screen explaining what the app does - The demographics form is now optional - Added Terms of Service and Privacy Policy, with a one-time consent screen for new sign-ins - Reminders no longer nag you after you've already checked in for the day - Evening check-ins now open at 6 PM instead of first thing in the morning, so you're reporting on your whole day - Fixed a timing bug in sleep trial reminders - Your trial calendar now clearly shows any day you missed, and you can tap it to fill it in - If you miss a day or two, you can still finish your trial instead of getting stuck — you'll get one chance to fill in what you remember before your results are calculated - Fixed a layout issue where the bottom of some screens felt cut off - Various small bug fixes and polish ### 1.1 — 2026-06-12 Updated App Name. Fixed handling of iPhone push notifications ### 1.0 — 2026-06-09 No release notes. ## Apps similar to N of 1 | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sleep Habits: N of 1](https://appshunter.io/ios/app/sleep-habits-n-of-1/id6797834810) | — | Free | Health & Fitness | | [SuppLab: Supplement Tracker](https://appshunter.io/ios/app/supplab-supplement-tracker/id6792475264) | — | Free | Health & Fitness | | [StudyU Health](https://appshunter.io/ios/app/studyu-health/id1571991198) | — | Free | Health & Fitness | | [EEG Waves](https://appshunter.io/ios/app/eeg-waves/id6443848939) | 2.5 (2) | $24.99 | Health & Fitness | | [Protocol: Macro & Workout App](https://appshunter.io/ios/app/protocol-macro-and-workout-app/id6756283460) | 5.0 (6) | Free | Health & Fitness | | [Williamsburg Wharf Club](https://appshunter.io/ios/app/williamsburg-wharf-club/id6761234311) | 3.0 (2) | Free | Health & Fitness | --- *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 2026-10-14.*