Version history
TVMDC Sailing & Marine Navigation Calculator
28
ASO score
Text
37/100
Reviews
0/100
Graphic
42/100
Other
0/100
App Rating
3.5
Votes
3
App Age
10y 8m
Last Update
Apr 08, 2021
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
3.5
|
4.57
|
-23%
|
|
Number of Ratings (Voted)
|
3
|
268.5K
|
-100%
|
|
App Age
|
10y 8m
|
8y 10m
|
+21%
|
|
Price
|
$5
|
$1
|
+358%
|
|
In-app Purchases Price
|
$0
|
$34
|
|
|
Update Frequency
|
1713d
|
66d
|
+2 493%
|
|
Title Length
|
44
|
24
|
+83%
|
|
Subtitle Length
|
0
|
27
|
|
|
Description Length
|
1 819
|
2 579
|
-29%
|
|
Number of Screenshots
|
271
|
1513
|
-82
%
|
|
Size
|
0MB
|
153MB
|
|
Category Ranking in United States
7 days
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Last 90 days
Last 180 days
Last year
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| Top | Dec 08, 2025 | Dec 15, 2025 |
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| Top | Dec 08, 2025 | Dec 15, 2025 |
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| Top | Dec 08, 2025 | Dec 15, 2025 |
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No results were found!
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Ranking Keywords in United States
| Keywords | App Rank |
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Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
44
of 30
)
TVMDC Sailing & Marine Navigation Calculator
Subtitle
(
Characters:
0
of 30
)
Description
(
Characters:
1819
of 4000
)
A Simple to Use, Marine Navigation Calculator App - for Sailors and Navigators learning to use Charts.
The TVMDC App performs three functions: -
* Instant TVMDC corrections between True, Magnetic and Compass bearings.
* Set & Drift Calculations from two known Fixes.
* Calculation of "Course to Steer" (CTS) based upon a Destination while factoring in both TVMDC and 'Set & Drift' corrections.
Allows you to move between True, Magnetic and Compass bearings instantly. A True, Variation, Magnetic, Deviation, Compass (TVMDC) Calculator.
Ideal for Sailors who are learning to Navigate with Charts.
Includes corrections for : Variation, Annual Magnetic Variation Drift, a boat's Deviation, Set and Drift factors.
Simple to use: Input values form the your nearest Chart's Compass Rose: including Variation and Annual Increase. Along with your boat Compass's Deviation.
The Calculator will instantly correct between any: True, Magnetic and Compass bearings.
Add two known fixes along with your boat's Heading and Speed through the Water. Press Calculate and the App will display your calculated "Set and Drift" values along with a graphical sailing triangle.
Any heading or bearing is adjusted for Magnetic Variation and Deviation.
Add your Destination and the Calculator will provide your best Course to Steer: factoring in TVMDC and Set and Drift errors.
American Sailing Association (ASA) course 105 (Navigation) is an ideal back ground for the App.
Also, wikipedia's TVMDC description : http://en.wikipedia.org/wiki/TVMDC
YouTube TVMDC App Introduction tutorial: https://www.youtube.com/watch?v=u4d5wCgPxwg
Extensive Help at: http://www.arintoapps.com
Runs on iPhones 5, 6 and 6+, 7, 7+ in Portrait mode ONLY.
Planning on new versions and extensions; so please feedback feature requests?}
Read more
Other
Additional Information
| Rating: | |
| Voted: | 3 |
| App Store Link: | |
| Price: | 4.99 $ |
| Website: | |
| Email: | - |
| Privacy Policy: | - |
| Categories: | Navigation, Education |
| Size: | - |
| App Age: | 10 years 8 months |
| Release Date: | Apr 09, 2015 |
| Last Update: | Apr 08, 2021 |
| Version: | 4.5.1 |
Version history
4.5.1
Apr 08, 2021
Fixed crash when selecting Norwegian language
Fixed intro page video maximize - minimize bug
Fixed date display to show today, tomorrow etc without a time
Collapsible sections for recipes and meal plans
4.5
Mar 24, 2021
Support for voice dictation using Siri
Support for Apple Watch
Collapsible sections, auto collapsed on large lists
Improved share to Grosh function (for recipes and products)
Scroll on long list should not swipe items by mistake
Calendar component e.g. on stock lists now properly translated
Support for unlocked app orientation (handy for ipads)
Various minor bug fixes