# Phreno — Know the Hits That Matter

> Real-time head impact tracking for athletes using a compatible headband. (iPhone/iPad app by Phreno.)

- Source: https://appshunter.io/ios/app/phreno/id6758031491 (this page in markdown: same URL + `.md`)
- Developer: [Phreno](https://appshunter.io/developer/1769131897)
- Category: Health & Fitness, Sports
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.1 · 44 MB
- Languages: American English
- Released: 2026-04-27
- Data updated: 2026-06-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/phreno/id6758031491/reviews.md

## What is Phreno?

Phreno pairs with the Noggin headband to track head impacts in real time. Built for athletes who play hard — football, skiing, mountain sports, and action — Phreno captures every significant hit so you can train smarter and play with confidence.

WHAT'S INSIDE

• Dual-Sensor Precision — A high-G accelerometer and IMU gyroscope measure both linear and rotational forces on every hit.
• Real-Time Impact Alerts — Instant notifications when a significant hit is detected.
• Always-On Smart Design — Noggin activates automatically with your gear and powers down after sessions.
• Offline Reliability — On-board memory stores hits when you're out of Bluetooth range. Sync later.
• Long Battery Life — Up to 7 days per charge. USB-C rechargeable.

HOW IT WORKS

1. Charge and pair your Noggin headband with Phreno over Bluetooth.
2. Wear Noggin under your helmet or gear.
3. Review impact history, g-force data, and session stats on your iPhone.

DISCLAIMER

Phreno is not a medical device and is not intended to diagnose or treat concussion or brain injury. Always consult a qualified health professional after a significant impact.

REQUIREMENTS

• iPhone with Bluetooth
• Noggin headband (sold separately at getphreno.com)

## Key features

- Real-time head impact tracking
- Dual-sensor precision (accelerometer & gyroscope)
- Instant impact alerts
- Offline data storage
- Long battery life (7 days)
- Session statistics review


## Frequently asked questions about Phreno

### What is Phreno?

Phreno is an application designed to pair with the Noggin headband to track head impacts in real-time. It captures significant hits, providing athletes with data to train smarter and play with confidence.

### How does Phreno track head impacts?

Phreno utilizes a dual-sensor system within the Noggin headband, featuring a high-G accelerometer and an IMU gyroscope. These sensors measure both linear and rotational forces experienced during each hit.

### Does Phreno work without a Bluetooth connection?

Yes, Phreno features offline reliability. Its on-board memory in the Noggin headband stores impact data when out of Bluetooth range, allowing for later syncing.

### What are the requirements to use Phreno?

To use Phreno, you need an iPhone with Bluetooth and the Noggin headband, which is sold separately. The app itself is free to download and use.

### How long does the Noggin headband battery last?

The Noggin headband offers a long battery life, lasting up to 7 days on a single charge. It is rechargeable via USB-C.

### Is Phreno a medical device?

No, Phreno is not a medical device and is not intended to diagnose or treat concussion or brain injury. It is a tool for athletes to monitor impacts and should not replace professional medical advice.

### What kind of data does Phreno provide?

Phreno provides users with impact history, g-force data, and session statistics. It also offers real-time impact alerts when a significant hit is detected.

### What is the update frequency for Phreno?

The latest version of Phreno is 1.0.0, and it was last updated on April 27, 2026. Future updates will likely focus on improving features and compatibility.

## Version history (last 1 release)

### 1.0.0 — 2026-04-27

No release notes.

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*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 2026-06-29.*