# PMK vs Scuba Supervisor

The clearest difference is review sentiment: Scuba Supervisor at 100% against PMK's 22%. Scuba Supervisor also leads on rating (5.0 vs 2.1) and update cadence (fortnightly vs every 8 months). PMK's advantage is ratings volume (217 vs 7). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Scuba Supervisor holds the better App Store score, 5.0 against 2.1. That said, the two scores are not equally well evidenced: PMK has 217 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 22% of PMK's written reviews are positive against 100% of Scuba Supervisor's.

PMK ships an update every 8 months, Scuba Supervisor fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | PMK | Scuba Supervisor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (217 ratings)](https://appshunter.io/ios/app/pmk-ee/id1453212115/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/scuba-supervisor/id6739432744/reviews)** |
| Number of ratings | **217** | 7 |
| Positive reviews | 21.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 88 MB | 42 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Program Executive Office for Enterprise Information Systems, Sea Warrior Program](https://appshunter.io/developer/1477503418) | [Seung Heon Kim](https://appshunter.io/developer/1697209043) |

## What reviewers say

### PMK

[App page](https://appshunter.io/ios/app/pmk-ee/id1453212115)

Prepare for and take the Professional Military Knowledge Eligibility Exam (PMK-EE) required for enlisted advancement. This app offers 100 questions across five sections, allowing retakes to achieve an 80% passing score per section and overall. It's designed for Sailors preparing for E4 through E7 paygrades.

**Highlights:** Prepare for PMK-EE exam, 100 questions across 5 sections, Retake sections as needed, Bookmarks progress, Submit completion certificates, Tailored to paygrades E4-E7

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

**In-app purchases:** none

**What reviewers like**

- 👍 User-friendly interface
- 👍 Convenient alternative to e-learning
- 👍 Works for some users
- 👍 Saves time for some
- 👍 Good concept

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Progress lost on crash/update
- 🐛 Certificates invalid/not accepted
- 🐛 Cannot submit/email certificates
- 🐛 Slow performance

**Reported bugs**

- App crashes and won't reopen
- App freezes on disclaimer window
- Progress lost after app updates
- Certificates are invalid or not recognized
- Cannot email or submit certificates

**Requested features**

- Allow printing certificate with score
- Fix email submission issues
- Improve certificate validity
- Ensure progress is saved reliably
- Provide correct answers after failing tests


### Scuba Supervisor

[App page](https://appshunter.io/ios/app/scuba-supervisor/id6739432744)

This app assists divers in planning and executing dives according to Navy Dive Manual guidelines. It offers features for detailed dive planning, real-time tracking, and digital logbook storage. Educational resources are also included to enhance diver knowledge.

**Highlights:** Advanced dive planning, Real-time dive tracking, Digital dive log storage, Safety notifications, Educational resources, Navy Dive Manual compliance

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PMK free?

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

### Is Scuba Supervisor free?

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

### Which has better reviews, PMK or Scuba Supervisor?

Scuba Supervisor is rated higher. PMK averages 2.1 out of 5 from 217 ratings, while Scuba Supervisor averages 5.0 from 7 ratings.

### Do PMK or Scuba Supervisor have ads?

Neither PMK nor Scuba Supervisor shows ads.

### Which is updated more often, PMK or Scuba Supervisor?

PMK ships an update every 8 months, and Scuba Supervisor fortnightly. Most recently, PMK was updated on October 24, 2026 and Scuba Supervisor 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.*