# PE Classifier vs PFT Spirometry

The clearest difference is in-app purchases: PE Classifier at none against PFT Spirometry's 2. PE Classifier also leads on iOS requirement (15.1 vs 18). PFT Spirometry's advantage is update cadence (every 2 weeks vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. PFT Spirometry sells 2 in-app purchases, starting at $7.99 per month. PE Classifier asks for nothing beyond the download.

PE Classifier ships an update monthly, PFT Spirometry every 2 weeks. The most recent releases landed on September 18, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | PE Classifier | PFT Spirometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pe-classifier/id6781558435/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 24 MB | 8 MB |
| Requires iOS | **15.1** | 18 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Dawwod George](https://appshunter.io/developer/6781558437) | [ABHISHEK KUMAR](https://appshunter.io/developer/1877547879) |

## What reviewers say

### PE Classifier

[App page](https://appshunter.io/ios/app/pe-classifier/id6781558435)

This educational reference tool helps medical professionals and students understand and apply the latest acute pulmonary embolism classification system. It features interactive diagrams, a built-in checklist, and direct links to source guidelines for comprehensive learning.

**Highlights:** Full Category A-E classification with sub-stages, Interactive visual diagrams, Built-in HESTIA checklist, Optional local case log, Direct link to source guideline

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

**In-app purchases:** none


### PFT Spirometry

[App page](https://appshunter.io/ios/app/pft-spirometry/id6787568741)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PFT Premium Monthly | $7.99 | per month |
| PFT Premium Yearly | $79.99 | per year |


## Frequently asked questions

### Is PE Classifier free?

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

### Is PFT Spirometry free?

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

### Do PE Classifier or PFT Spirometry have ads?

Neither PE Classifier nor PFT Spirometry shows ads.

### Which is updated more often, PE Classifier or PFT Spirometry?

PE Classifier ships an update monthly, and PFT Spirometry every 2 weeks. Most recently, PE Classifier was updated on September 18, 2026 and PFT Spirometry on September 12, 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.*