# EMS Prep Test vs Oxygen

The clearest difference is in-app purchases: Oxygen at none against EMS Prep Test's 4. Oxygen also leads on update cadence (every 9 days vs every 8 months) and rating (5.0 vs 4.7). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. EMS Prep Test sells 4 in-app purchases, starting at $4.99 per 7 days. Oxygen asks for nothing beyond the download.

Oxygen holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 16 and 6 respectively.

EMS Prep Test ships an update every 8 months, Oxygen every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | EMS Prep Test | Oxygen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (16 ratings)](https://appshunter.io/ios/app/ems-prep-test-pass-exam-2026/id6502058341/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/oxygen/id6645736637/reviews)** |
| Number of ratings | **16** | 6 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 45 MB |
| Requires iOS | 18.0 | **14.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [Chintan Kavathiya](https://appshunter.io/developer/1741934685) | [Shayar Ghafour](https://appshunter.io/developer/1790857594) |

## What reviewers say

### EMS Prep Test

[App page](https://appshunter.io/ios/app/ems-prep-test-pass-exam-2026/id6502058341)

Prepare for your EMS certification exams with comprehensive practice tests and detailed explanations. This app offers thousands of questions across various emergency medical services disciplines, helping you identify strengths and weaknesses for effective study.

**Highlights:** Thousands of practice questions, Detailed explanations for answers, Simulated exam experience, Categorized exams for focused study, Progress tracking and statistics, Bookmark difficult questions

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EMS Practice Pro Weekly Pack | $4.99 | per 7 days |
| EMS  Practice Pro Monthly Pack | $14.99 | per month |
| EMS Practice Pro Lifetime Gift | $11.99 | one-time |
| EMS Practice Pro Lifetime Pack | $24.99 | one-time |


### Oxygen

[App page](https://appshunter.io/ios/app/oxygen/id6645736637)

This app provides medical students with a dedicated platform for their studies. It offers access to pre-recorded lectures aligned with coursework, allowing for flexible learning. The app features distinct roles for students and administrators to ensure an organized and efficient educational experience.

**Highlights:** Pre-recorded lecture access, Coursework-aligned content, Student role for learning, Administrator role for management, Flexible study schedule

**In-app purchases:** none


## Frequently asked questions

### Is EMS Prep Test free?

EMS Prep Test is free to download, with in-app purchases available.

### Is Oxygen free?

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

### Which has better reviews, EMS Prep Test or Oxygen?

Oxygen is rated higher. EMS Prep Test averages 4.7 out of 5 from 16 ratings, while Oxygen averages 5.0 from 6 ratings.

### Do EMS Prep Test or Oxygen have ads?

Neither EMS Prep Test nor Oxygen shows ads.

### Which is updated more often, EMS Prep Test or Oxygen?

EMS Prep Test ships an update every 8 months, and Oxygen every 9 days. Most recently, EMS Prep Test was updated on October 24, 2026 and Oxygen on October 24, 2026.

---

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