# EBMcalc Neurology vs PotsiApp

The clearest difference is rating: PotsiApp at 3.0 against EBMcalc Neurology's 1.0. PotsiApp also leads on price ($3.99 vs $4.99). EBMcalc Neurology's advantage is iOS requirement (10.0 vs 15.4). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

EBMcalc Neurology costs $4.99 and PotsiApp $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PotsiApp holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

EBMcalc Neurology ships an update every 26 months, PotsiApp every 20 months. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | EBMcalc Neurology | PotsiApp |
| --- | --- | --- |
| Price | $4.99 | **$3.99** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/ebmcalc-neurology/id369960944/reviews) | **[3.0 (1 ratings)](https://appshunter.io/ios/app/potsiapp/id1451461437/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 20 months** |
| Monetization | Paid | Paid |
| Size | 4 MB | 1 MB |
| Requires iOS | **10.0** | 15.4 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 17+ |
| Developer | [Foundation Internet Services, LLC](https://appshunter.io/developer/303471468) | [ORTHOPRACTIS.COM SINGLE MEMBER P.C.](https://appshunter.io/developer/1286360877) |

## What reviewers say

### EBMcalc Neurology

[App page](https://appshunter.io/ios/app/ebmcalc-neurology/id369960944)

This medical calculator provides a comprehensive system for clinical criteria, equations, decision trees, and unit converters. It is designed to assist healthcare professionals in their practice.

**Highlights:** Extensive clinical criteria sets, Numerous medical equations, Decision trees for diagnosis, Unit and dose converters, Long-standing and acclaimed system

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### PotsiApp

[App page](https://appshunter.io/ios/app/potsiapp/id1451461437)

This medical app assists orthopedic surgeons in evaluating spinal deformities by calculating the Posterior Trunk Symmetry Index (POTSI). It uses a non-invasive topographic method with simple back images to assess back symmetry, helping to identify potential scoliosis and monitor deformities objectively.

**Highlights:** Calculates Posterior Trunk Symmetry Index (POTSI), Evaluates back symmetry using topographic method, Non-invasive assessment of spinal deformity, Imports medical images from camera or photos, Marks anatomical points on patient's back, Saves planned images for review, Objective monitoring of spine deformities

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is EBMcalc Neurology free?

EBMcalc Neurology costs $4.99, with no in-app purchases.

### Is PotsiApp free?

PotsiApp costs $3.99, with no in-app purchases.

### Which has better reviews, EBMcalc Neurology or PotsiApp?

PotsiApp is rated higher. EBMcalc Neurology averages 1.0 out of 5 from 1 ratings, while PotsiApp averages 3.0 from 1 ratings.

### Do EBMcalc Neurology or PotsiApp have ads?

Neither EBMcalc Neurology nor PotsiApp shows ads.

### Which is updated more often, EBMcalc Neurology or PotsiApp?

EBMcalc Neurology ships an update every 26 months, and PotsiApp every 20 months. Most recently, EBMcalc Neurology was updated on November 6, 2026 and PotsiApp on November 8, 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.*