# POTTER vs TSRA App

The clearest difference is rating: POTTER at 4.4 against TSRA App's 3.7. POTTER also leads on iOS requirement (11.2 vs 17.0). TSRA App's advantage is update cadence (every 11 days vs every 8 months). On price, ratings volume, 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.

POTTER holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 5 and 3 respectively.

POTTER ships an update every 8 months, TSRA App every 11 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | POTTER | TSRA App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/potter/id1364985773/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/tsra-app/id6759273737/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 11 days** |
| Monetization | Free | Free |
| Size | 8 MB | 20 MB |
| Requires iOS | **11.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Interpretable AI LLC](https://appshunter.io/developer/1805627984) | [Syed Faaz Ashraf](https://appshunter.io/developer/1877808813) |

## What reviewers say

### POTTER

[App page](https://appshunter.io/ios/app/potter/id1364985773)

This medical tool provides an accurate and user-friendly way to calculate emergency surgery risks. It's based on a machine learning algorithm derived from extensive research.

**Highlights:** Emergency surgery risk calculation, Machine learning algorithm, User-friendly interface, Based on published research, Highly accurate

**Features:** macOS Compatibility

**In-app purchases:** none


### TSRA App

[App page](https://appshunter.io/ios/app/tsra-app/id6759273737)

This app provides cardiothoracic surgery residents with comprehensive study materials for board certification. It includes textbooks, a question bank, expert lectures, and structured courses, all accessible offline. Features like flashcards, annotation, and progress tracking enhance the learning experience.

**Highlights:** 6 TSRA textbooks with 600+ chapters, 1000+ board-style multiple-choice questions, 120+ expert audio lectures, Structured learning paths and quizzes, Custom flashcard creation, Offline access to content, Progress tracking and study streaks

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is POTTER free?

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

### Is TSRA App free?

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

### Which has better reviews, POTTER or TSRA App?

POTTER is rated higher. POTTER averages 4.4 out of 5 from 5 ratings, while TSRA App averages 3.7 from 3 ratings.

### Do POTTER or TSRA App have ads?

Neither POTTER nor TSRA App shows ads.

### Which is updated more often, POTTER or TSRA App?

POTTER ships an update every 8 months, and TSRA App every 11 days. Most recently, POTTER was updated on November 2, 2026 and TSRA App on October 31, 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.*