# PEER vs Multiple Sclerosis Tracker

The clearest difference is review sentiment: PEER at 100% against Multiple Sclerosis Tracker's 0%. PEER also leads on rating (5.0 vs 1.0) and monetization model (free vs free with in-app purchases). Multiple Sclerosis Tracker's advantage is device support (4 vs 2) and iOS requirement (15.5 vs 17.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. PEER sells 10 one-off in-app purchases and Multiple Sclerosis Tracker sells 17 in-app purchases, starting at $4.95 per month. Whichever you choose, the download price is not the number that matters.

PEER holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 100% of PEER's written reviews are positive against 0% of Multiple Sclerosis Tracker's.

PEER ships an update every 4 months, Multiple Sclerosis Tracker every 8 months. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PEER | Multiple Sclerosis Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/peer/id1623717304/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/multiple-sclerosis-tracker/id6743040815/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 8 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 76 MB | 201 MB |
| Requires iOS | 17.6 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [BrainWave Software](https://appshunter.io/developer/1575971305) | [Digital Therapeutics](https://appshunter.io/developer/1721663167) |

## What reviewers say

### PEER

[App page](https://appshunter.io/ios/app/peer/id1623717304)

This app facilitates EEG data recording and ERP analysis for research studies. It connects with specific EEG headsets to collect raw data and neurological study information. Recorded data can be exported for further analysis with various neuroscience tools.

**Highlights:** 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

**In-app purchases (10)**

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


### Multiple Sclerosis Tracker

[App page](https://appshunter.io/ios/app/multiple-sclerosis-tracker/id6743040815)

This app helps individuals manage their Multiple Sclerosis by tracking symptoms, medication, and potential triggers. It generates reports for healthcare providers and offers educational resources. Designed for both newly diagnosed and long-term patients, it prioritizes user privacy with bank-level encryption.

**Highlights:** Personalized symptom monitoring, Symptom pattern analysis, Medication effectiveness tracking, Report generation for doctors, Medication reminders, MS-specific educational resources, Secure data encryption

**Features:** macOS Compatibility, Siri integration, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite Monthly | $4.95 | per month |
| easy pass | $5.99 | per 7 days |
| weather max | $9.99 | per 3 months |
| flex pass | $9.99 | per month |
| carey ai max | $19.99 | per month |
| Lite Yearly | $19.99 | per year |
| smart pass | $24.99 | per year |
| carey ai ultra | $29.99 | per month |
| plus | $29.99 | per year |
| Premium Yearly | $29.99 | per year |
| limited discount | $34.99 | per year |
| yearly access | $39.99 | per year |
| Extended Trial | $39.99 | per year |
| 7-Day Trial | $49.99 | per year |
| store credit | $1.99 | one-time |
| carey ai credits | $8.99 | one-time |
| lifetime upgrade | $99.00 | one-time |


## Frequently asked questions

### Is PEER free?

PEER is free to download, with in-app purchases available.

### Is Multiple Sclerosis Tracker free?

Multiple Sclerosis Tracker is free to download, with in-app purchases available.

### Which has better reviews, PEER or Multiple Sclerosis Tracker?

PEER is rated higher. PEER averages 5.0 out of 5 from 1 ratings, while Multiple Sclerosis Tracker averages 1.0 from 2 ratings.

### Do PEER or Multiple Sclerosis Tracker have ads?

Neither PEER nor Multiple Sclerosis Tracker shows ads.

### Which is updated more often, PEER or Multiple Sclerosis Tracker?

PEER ships an update every 4 months, and Multiple Sclerosis Tracker every 8 months. Most recently, PEER was updated on October 6, 2026 and Multiple Sclerosis Tracker on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*