# UWorld MCAT Prep vs Senstream

The clearest difference is monetization model: Senstream at free against UWorld MCAT Prep's free with in-app purchases. Senstream also leads on device support (4 vs 2). UWorld MCAT Prep's advantage is ratings volume (157 vs 5) and update cadence (monthly vs every 3 months). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.5 for UWorld MCAT Prep against 4.6 for Senstream. That said, the two scores are not equally well evidenced: UWorld MCAT Prep has 157 ratings behind it against 5, so its average is the more settled of the two.

UWorld MCAT Prep ships an update monthly, Senstream every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | UWorld MCAT Prep | Senstream |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (157 ratings)](https://appshunter.io/ios/app/uworld-mcat-prep-score-higher/id1248501386/reviews) | **[4.6 (5 ratings)](https://appshunter.io/ios/app/senstream/id1297743398/reviews)** |
| Number of ratings | **157** | 5 |
| Positive reviews | 35.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 215 MB | 19 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 17+ | 4+ |
| Developer | [UWorld LLC](https://appshunter.io/developer/340946910) | [Senstream, Inc.](https://appshunter.io/developer/1297743397) |

## What reviewers say

### UWorld MCAT Prep

[App page](https://appshunter.io/ios/app/uworld-mcat-prep-score-higher/id1248501386)

Prepare for the MCAT with a comprehensive suite of study tools. Access interactive ebooks, video lessons, flashcards, and a question bank with detailed explanations. Track your progress with practice exams and performance analytics to achieve your best score.

**Highlights:** 3,000+ MCAT-style practice questions, Detailed step-by-step explanations, Interactive UBooks with concept check questions, Hundreds of short video lessons, Spaced repetition flashcards, 4 AAMC practice exams, Performance tracking and analytics

**In-app purchases:** none


### Senstream

[App page](https://appshunter.io/ios/app/senstream/id1297743398)

This app records physiological signal data from a wearable ring, capturing electrodermal activity, ECG, PPG, temperature, and motion. It connects to the cloud for powerful data analysis, enabling new types of research.

**Highlights:** Electrodermal activity (EDA/GSR) capture, ECG and PPG data recording, Temperature and motion sensing, Mobile and cloud data synchronization, BIOPAC integration

**In-app purchases:** none


## Frequently asked questions

### Is UWorld MCAT Prep free?

UWorld MCAT Prep is free to download, with no in-app purchases.

### Is Senstream free?

Senstream is free to download, with no in-app purchases.

### Which has better reviews, UWorld MCAT Prep or Senstream?

Senstream is rated higher. UWorld MCAT Prep averages 4.5 out of 5 from 157 ratings, while Senstream averages 4.6 from 5 ratings.

### Do UWorld MCAT Prep or Senstream have ads?

Neither UWorld MCAT Prep nor Senstream shows ads.

### Which is updated more often, UWorld MCAT Prep or Senstream?

UWorld MCAT Prep ships an update monthly, and Senstream every 3 months. Most recently, UWorld MCAT Prep was updated on October 24, 2026 and Senstream 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.*