Version history
Master-Nav
55
ASO score
Text
60/100
Reviews
50/100
Graphic
60/100
Other
0/100
App Rating
4.8
Votes
381
App Age
3y 11m
Last Update
Aug 27, 2025
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
4.81
|
4.6
|
+5%
|
|
Number of Ratings (Voted)
|
381
|
269.8K
|
-100%
|
|
App Age
|
3y 11m
|
6y 4m
|
-39%
|
|
Price
|
$2
|
$0
|
|
|
In-app Purchases Price
|
$0
|
$45
|
|
|
Update Frequency
|
83d
|
44d
|
+87%
|
|
Title Length
|
10
|
26
|
-62%
|
|
Subtitle Length
|
25
|
28
|
-11%
|
|
Description Length
|
1 539
|
2 877
|
-47%
|
|
Number of Screenshots
|
1131
|
1180
|
-4
%
|
|
Size
|
60MB
|
220MB
|
-73
%
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 05, 2025 | Dec 12, 2025 |
|---|---|---|
|
No results were found!
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| Top | Dec 05, 2025 | Dec 12, 2025 |
|---|---|---|
|
No results were found!
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| Top | Dec 05, 2025 | Dec 12, 2025 |
|---|---|---|
|
No results were found!
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| Top | Dec 05, 2025 | Dec 12, 2025 |
|---|---|---|
|
No results were found!
|
||
Ranking Keywords in United States
| Keywords | App Rank |
|---|
Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
10
of 30
)
Master-Nav
Subtitle
(
Characters:
25
of 30
)
NAV RULES - the easy way!
Description
(
Characters:
1539
of 4000
)
Master-Nav makes learning COLREGS easy with its comprehensive learning system that leverages the natural learning mechanisms of the brain. Our goal is to simplify your preparation for maritime qualifications and maximize your success. Instead of diving into dense rule books, our application uses interactive visuals, memory aids, and exam answer phrases for an engaging and intuitive learning experience.
Start with the Learning Section to understand the rules step by step, then move to the Practice Section to reinforce your knowledge and improve your performance. Master-Nav covers COLREGS Part A to Part D (Rules 1-37) and the distress signals found in Annex IV thoroughly. With over 1000 questions in various formats, each supported by clear graphic answers highlighting errors, Master-Nav reinforces your knowledge through repeated practice, making rule retention effortless.
Our app-wide Rule button simplifies navigating the COLREGS Rule book. A single click gives you quick access to the relevant COLREG rule for the question at hand, saving valuable study time.
To make complex rules with technical terminology more understandable, we provide explanations in simple language. We understand that maritime regulations can be dense, especially for newcomers to the field.
Whether you're a cadet starting your maritime career or an experienced mariner refreshing your understanding of the COLREGS, Master-Nav is the ideal learning tool. Experience the convenience, effectiveness, and painless rule memorization our app provides.}
Read more
Other
Additional Information
| Rating: | |
| Voted: | 381 |
| App Store Link: | |
| Price: | 1.99 $ |
| Website: | |
| Email: | - |
| Privacy Policy: | |
| Categories: | Reference |
| Size: | 59MB |
| App Age: | 3 years 11 months |
| Release Date: | Jan 08, 2022 |
| Last Update: | Aug 27, 2025 |
| Version: | 1.35 |
Version history
1.35
Aug 27, 2025
Minor fixes and improvements.
1.34
Jul 29, 2025
Minor fixes and improvements.