# Seabook+ vs Captain Mike's OUPV Prep

Seabook+ and Captain Mike's OUPV Prep both sit at 4.0 stars, but that hides the real split: 100% of Captain Mike's OUPV Prep's written reviews are positive against 53% of Seabook+'s. Captain Mike's OUPV Prep also leads on update cadence (every 2 months vs every 35 months). Seabook+'s advantage is price ($6.99 vs $9.99) and ratings volume (3 vs 1). On rating, ads, in-app purchases and monetization model there is nothing between them.

Seabook+ costs $6.99 and Captain Mike's OUPV Prep $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.0 for Seabook+ against 4.0 for Captain Mike's OUPV Prep. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews are what separate them: 53% of Seabook+'s written reviews are positive against 100% of Captain Mike's OUPV Prep's.

Seabook+ ships an update every 35 months, Captain Mike's OUPV Prep every 2 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Seabook+ | Captain Mike's OUPV Prep |
| --- | --- | --- |
| Price | **$6.99** | $9.99 |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/seabook-plus/id1517249755/reviews) | [4.0 (1 ratings)](https://appshunter.io/ios/app/captain-mikes-oupv-prep/id6764703688/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 53.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 37 MB | 25 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ozgur GUNES](https://appshunter.io/developer/708215144) | [Knotlogic LLC](https://appshunter.io/developer/1895865233) |

## What reviewers say

### Seabook+

[App page](https://appshunter.io/ios/app/seabook-plus/id1517249755)

This app provides comprehensive maritime information for professionals and enthusiasts. It offers tools for navigational and technical computations, designed for easy use at sea with offline accessibility and a user-friendly interface.

**Highlights:** Comprehensive maritime information, Navigational and technical computations, Offline accessibility, User-friendly interface, Information for marine professionals, Knowledge for sea enthusiasts

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

**In-app purchases:** none


### Captain Mike's OUPV Prep

[App page](https://appshunter.io/ios/app/captain-mikes-oupv-prep/id6764703688)

Prepare for your USCG OUPV Captain's License exam with a comprehensive study tool focused on the Rules of the Road. It offers a vast question bank, adaptive learning, and realistic practice exams to help you master navigation rules. Study offline at your own pace until you pass.

**Highlights:** Extensive Rules of the Road question bank, Adaptive learning for missed questions, Spaced-repetition Smart Review, Realistic timed practice exams, Visual quick-reference guides, Offline study functionality, Detailed answer explanations

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

**In-app purchases:** none


## Frequently asked questions

### Is Seabook+ free?

Seabook+ costs $6.99, with no in-app purchases.

### Is Captain Mike's OUPV Prep free?

Captain Mike's OUPV Prep costs $9.99, with no in-app purchases.

### Which has better reviews, Seabook+ or Captain Mike's OUPV Prep?

Seabook+ and Captain Mike's OUPV Prep are both rated 4.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Seabook+ or Captain Mike's OUPV Prep have ads?

Neither Seabook+ nor Captain Mike's OUPV Prep shows ads.

### Which is updated more often, Seabook+ or Captain Mike's OUPV Prep?

Seabook+ ships an update every 35 months, and Captain Mike's OUPV Prep every 2 months. Most recently, Seabook+ was updated on November 3, 2026 and Captain Mike's OUPV Prep 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.*