Version history
Sailing Reference
20
ASO score
Text
25/100
Reviews
0/100
Graphic
40/100
Other
0/100
App Rating
3.7
Votes
813
App Age
10y 8m
Last Update
Feb 15, 2025
iAP
$0.99 - 0.99
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Installs
|
599
|
21.3M
|
-100%
|
|
Rating
|
3.89
|
4.29
|
-9%
|
|
Number of Ratings (Voted)
|
224
|
26.1M
|
-100%
|
|
App Age
|
10y 8m
|
5y 10m
|
+83%
|
|
Price
|
$2
|
$0
|
|
|
In-app Purchases Price
|
$1
|
$104
|
-99
%
|
|
Update Frequency
|
325d
|
85d
|
+283%
|
|
Title Length
|
17
|
25
|
-32%
|
|
Short Description Length
|
76
|
61
|
+25%
|
|
Description Length
|
1 690
|
2 470
|
-32%
|
|
Number of Screenshots
|
1848
|
1085
|
+70
%
|
|
Has Video?
|
No
|
0% has videos
|
|
|
Size
|
0MB
|
0MB
|
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 30, 2025 | Jan 06, 2026 |
|---|---|---|
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No results were found!
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| Top | Dec 30, 2025 | Jan 06, 2026 |
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No results were found!
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| Top | Dec 30, 2025 | Jan 06, 2026 |
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No results were found!
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| Top | Dec 30, 2025 | Jan 06, 2026 |
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No results were found!
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Downloads
Downloads Graph
Total
598
Last month
4
Text ASO
Title
(
Characters:
17
of 50
)
Sailing Reference
Short Description
(
Characters:
76
of 80
)
Crucial nautical navigation knowledge, calculators, and training flashcards.
Description
(
Characters:
1690
of 4000
)
Sailing Reference is the comprehensive reference guide for all of your nautical navigation needs. Ideal for beginner and seasoned sailors, the app contains information crucial to passing the various RYA Yachtmaster shorebased navigation and practical courses. All content is fully available offline so is not reliant upon a data connection at all. There are handy calculators for quickly estimating a course to steer, interpolating tidal stream data, calculating times and heights of tide at secondary ports, and estimating VHF radio transmission ranges. The in-depth reference section includes dozens of illustrated and detailed how-to guides covering:
• Plotting a Course to Steer
• Calculating Leeway
• Calculating Set and Drift
• Compass Deviation and Magnetic Variation
• Estimated Positions
• Interpolating Tidal Streams
• Calculating Depth to Anchor
• Bridge Clearances
• Secondary Port Calculations
• Buoyage and Beacons
• Safety and Distress
• VHF Radio
• Weather and Shipping Forecasts
• and Many More!
For those who need to brush up on their knowledge of the COLREGs / IRPCS, load up the flashcards for a quick quiz. Included with the app are a set of “Rules of the Road” flashcards covering numerous collision scenarios. Additional flashcards covering vessel lights, day shapes, flags and sound signals are available to purchase in-app as a single add-on pack.
New! Now contains instructional animations illustrating how to tie a number of the most common nautical knots. Each knot is accompanied by a brief description outlining suitable applications. The Bowline Knot is included with the main application, with other knots available to purchase in-app as a bundled add-on.}
Read more
Other
Additional Information
| Rating: | |
| Voted: | 813 |
| Google Play Link: | |
| Price: | 2.39 $ |
| Website: | |
| Email: | |
| Privacy Policy: | |
| Categories: | Books & Reference |
| Size: | - |
| iAP: | 0.99 - 0.99 $ |
| Installs: | 598 |
| App Age: | 10 years 8 months |
| Release Date: | Apr 25, 2015 |
| Last Update: | Feb 15, 2025 |
| Version: | 2.1.9 |
Version history
2.1.9
Feb 15, 2025
Flashcard corrections
2.1.8
Nov 17, 2024
Error corrections<br>Bug Fixes