Nautical Calculators

Support sailors to solve the most important problems of maritime.

Vu Cong The · com.vucongthe.naucal.plus

Not rated yet 10K+ downloads v4.9.2 46 MB Android 8.1+ PEGI 3 · Everyone

Download APK 46 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v4.9.2 (216)
Updated: Oct 1, 2026 (7 days ago)
APK size: 46 MB
Requires: Android 8.1+ (API 27)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Graphics: OpenGL ES 2.0+
Category: Maps & Navigation (app)
Listed since: Jul 12, 2021 (at least)
Permissions: 14 (2 sensitive)
Developer contact: [email protected]

About this APK

Nautical Calculators is an app by Vu Cong The in the Maps & Navigation category, listed since at least July 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 4.4.8, the minimum Android version rose from 7.0 to 8.1. It asks for 14 permissions, 2 of them sensitive: precise location and approximate location. It asks for the same permissions as version 4.9.1. The app can read the advertising ID that ad and analytics services use.

What's new in v4.9.2

Improved maneuvering database.

Description

From the listing uploaded by “appupdater”.

Nautical Calculators Preview. - Calculating for marine navigation, included : +Route Plan; +Plane Sailing; +Traverse Sailing; +Current and wind sailing; +Allowing for current and wind; +Wheel Over; +Meridional parts; +Calculate true wind and apparent wind on a ship running; +Correction of sounding; +Additional calculations; +Google Map and Location; +Nautical Almanac; +Database for Celestial LOP; +Star and Sun LOP; +Fix with two of LOP; +Fix with three of LOP; +Find the name of a star; +Correcting marine sextant altitude of sun and stars; +Rhumb-Line Sailing; +Great-Circle Sailing; +Probability Distribution Function; +Standard deviation and error; - Calculating for marine maneuvering, included : +Course and speed of a target ship; +Closest point of approach(CPA); +Keep watch for a target ship within a range of distances; +Data of station with time, distance and bearing specified; +Determine the ability to reach a target ship going faster; +Avoid collision; +Take a station with : -course specified; -speed specified; -time specified; + Close or open to a target ship in cases : -as quickly as possible; -on a constant bearing; -with time specified; +Maneuver to intercept a target ship running faster; +Maneuver to intercept ahead a target ship; +Time and Distance of intercepting ahead a target ship; +Maneuvering with added calculating of turning; +Close to a target ship as close as possible; -For researching, included : +The international regulations for preventing collisions at sea (COLREG) : Rules, Lights signs, Shapes signs and Sounds signs; +The marine signalization : Flag signalling, Morse signalling by hand, Morse code; +Show maritime buoyage system; +Glossary of Marine Navigation; +Busiest container ports; +World lighthouses system. -Units Conversion in Maritime The interfaces display in two languages : English and Vietnamese. author Vu Cong The. [email protected]

Version history

5 versions are listed, going back to v4.4.8. New versions arrive here every few months. Since v4.8.9 it requires Android 8.1+.

v4.9.2 LATEST Oct 1, 2026 46 MB TRUSTED v4.9.1 Aug 25, 2026 46 MB TRUSTED v4.9.0 Jul 2, 2026 46 MB TRUSTED v4.8.9 Jun 5, 2026 46 MB TRUSTED v4.4.8 Jan 11, 2025 83.7 MB TRUSTED

All 5 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Oct 1, 2026.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Oct 1, 2026
Validated against Google Play Oct 1, 2026
Signed byC=84
Signing certificate (SHA-1)FC:83:AD:7A:ED:C8:03:DB:D9:7F:27:4B:D0:21:20:BD:A2:7A:3C:AA
File MD5a8cda3fbe9e078a1009f486c8ac05747
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (14)

Nautical Calculators requests 14 permissions, 2 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Access assisted gps android.permission.ACCESS_ASSISTED_GPS
Access location android.permission.ACCESS_LOCATION
Access mtp android.permission.ACCESS_MTP
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.vucongthe.naucal.plus.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Location android.hardware.location

Nautical Calculators APK: questions and answers

Is there a version of Nautical Calculators for older Android phones?

The current version needs Android 8.1 or later. Version 4.4.8 is the newest listed build that installs on Android 7.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 4.4.8 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Nautical Calculators APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is a8cda3fbe9e078a1009f486c8ac05747.