# PEER

> EEG recording and ERP analysis app for neuroscience research studies. (iPhone/iPad app by BrainWave Software Inc..)

- Source: https://appshunter.io/ios/app/peer/id1623717304 (this page in markdown: same URL + `.md`)
- Developer: [BrainWave Software Inc.](https://appshunter.io/developer/1575971305)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 74 MB
- Languages: English
- Released: 2022-07-14
- Data updated: 2026-08-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/peer/id1623717304/reviews.md

## What is PEER?

PEER is an all-in-one EEG recording and ERP analysis App designed for research studies.  PEER communicates with Brain Products X.on (Brain Products.com) EEG headset.   

The PEER app collects raw EEG data and EEG data arising from Event-Related Potentials (ERP) neurological studies.  The PEER app maintains a collection of "recordings".  Each recording has a title and notes which can be searched.  PEER displays summary information about the recording (sample rates, sizes, etc.).

The recorded EEG data can be exported in one of a number formats for analysis using MATLAB, BrainVision Analyzer or one of a number of other tools used by neuroscience researchers.

PEER includes the following games and features:
- Raw EEG recording and display
- Visual Oddball (passive, one-response, two-response)
- Audio Oddball (passive, one-response, two-response) 
- N-Back
- Gambling Task
- Posner
- Image Presenter (select and preset custom images)
- One touch ERP analysis
- Export to Brain Vision Analyzer or .csv formats

PEER is not a diagnostic or medical device.  PEER is for research use only.

## Key features

- EEG recording and display
- Event-Related Potential (ERP) analysis
- Data export to Brain Vision Analyzer or .csv
- Includes N-Back and Gambling Task games
- Customizable image presenter
- Searchable recordings with titles and notes

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Gambling Task/Doors | $499.99 | one-time |
| N-Back Trial | Free | one-time |
| Gambling Task/Doors Trial | Free | one-time |
| N-Back | $499.99 | one-time |
| Audio Oddball | $499.99 | one-time |
| Audio Oddball Trial | Free | one-time |
| Image Presenter | $499.00 | one-time |
| Image Presenter Trial | Free | one-time |
| Posner Trial | Free | one-time |
| Posner | $499.00 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/peer/id1623717304/reviews.md

### 5/5 — Exactly what we needed

*2023-05-10*

Peers ability to seamlessly give us the data needed and it’s ease of use is incredible.

## Frequently asked questions about PEER

### What is PEER used for?

PEER is designed for EEG recording and ERP analysis specifically for research studies. It collects raw EEG data and data related to neurological studies, allowing researchers to export it for further analysis.

### Does PEER require specific hardware?

Yes, PEER communicates with Brain Products X.on EEG headsets. It is designed to work with this specific hardware for data collection.

### Can PEER data be used with other analysis tools?

Yes, the recorded EEG data can be exported in formats compatible with MATLAB, BrainVision Analyzer, and other tools commonly used by neuroscience researchers.

### What types of neurological studies does PEER support?

PEER supports studies involving Event-Related Potentials (ERPs), including passive and response-based Visual Oddball and Audio Oddball tasks. It also includes games like N-Back and Gambling Task.

### Is PEER a medical device?

No, PEER is explicitly stated to be for research use only and is not a diagnostic or medical device.

### What devices does PEER support?

PEER is supported on iPhone, iPad, and iPod devices, indicating broad compatibility within the Apple ecosystem.

### How often is PEER updated?

The latest version of PEER is 4.2, and it was last updated on January 28, 2026. This suggests a proactive development cycle for the application.

### Does PEER have ads?

No, PEER does not contain advertisements. The app is free to use and does not display any in-app ads.

## Version history (last 5 releases)

### 4.2 — 2026-01-28

PEER 4.2 introduces new features:

- X.on 500hz sample rate
- X.on 24-bit sample resolution
- X.on BIP channel recording
- Diode support

### 4.1.6 — 2025-05-29

This maintenance release addresses some issues connecting to X.on devices.

### 4.1.5 — 2025-04-10

PEER 4.1.5 is a maintenance release addressing issues that have surfaced since the release of PEER 4.1.

### 4.1.4 — 2025-03-14

Improved device connectivity.

### 4.1.3 — 2024-11-07

Updated product description

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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 2026-08-07.*