Geocaching GCTK App Reviews

Geocaching GCTK App Description & Overview

What is geocaching gctk app? 150+ tools and decoding tables to help you solve mystery- and multi-caches and make navigational computations, conversions, decodings and text analyses.
The number of tools will grow depending your input, so mail us to suggest/request a new tool or decoding table!

* No additional in-app purchases required
* No additional charge for features/tools that will be added in future versions.


GCTK features:

CONVERSIONS
Base64/Binary/Decimal/Hex to ASCII
Binary/Decimal/Hex/Octal conversions
Celsius, Fahrenheit and Kelvin
D°M'S" conversions
Distances
Roman numbers

NAVIGATION
2 WPs + 2 bearings = new WP
2 WPs + 2 distances = 2 new WPs (Intersections of 2 circles)
3 WPs + 3 distances = new WP (Intersection of 3 circles)
Centroid & surface of triangle
Centroid of circle through any 3 WPs
Coordinatesystem conversions (3800+ systems!)
Crossing lines
Distance, bearing, middle of 2 WPs
Project a new WP
WP/Bearing + WP/Distance = new WP

DECODING: TABLES

Alphabet, Gernreich
Alphabet, Latin
ASCII
Baal horizontal
Baal diagonal
Bacon
Brahmi
Chappe
Futurama
Hexahue
HVD code
Illuminati cypher
Mayan numerical coding
Periodical system
Pigpen cyphers (3 x)
Resistor colorcodes
Sign language
Signal flags: maritime
Signal flags: NATO
Signal flags: semaphore
Web- & WingDings
- and approximately 90 more...

DECODING: INTERACTIVE
Braille
ROT-5/13/47 rotation
Cellphone keypad (char to num)
Cellphone keypad (num to char)
Morse
Signlanguage
Vigenère

NUMBERS
Prime numbers
Fibonacci numbers
Pi (decimals)
e (decimals)

TEXT
Frequency analyses
a=1, b=2, a=26, b=25, etc
Count characters
Count words
Hint decrypting

OTHER
Sudoku solver
QR code scanner
Barcode scanner



UPCOMING FEATURES:

- more and other tools depending your input!

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Geocaching GCTK Comments & Reviews 2026

Geocaching GCTK 5.1.5 Tips, Tricks, Cheats and Rules

What do you think of the Geocaching GCTK app? Can you share your complaints, experiences, or thoughts about the application with JW Rijkes and other users?

Geocaching GCTK 5.1.5 Apps Screenshots & Images

Geocaching GCTK iphone, ipad, apple watch and apple tv screenshot images, pictures.

Geocaching GCTK (Versiyon 5.1.5) Install & Download

The application Geocaching GCTK was published in the category Navigation on 20 January 2013, Sunday and was developed by JW Rijkes [Developer ID: 567970964]. This program file size is 12.38 MB. This app has been rated by 11 users and has a rating of 4 out of 5. Geocaching GCTK - Navigation app posted on 20 February 2026, Friday current version is 5.1.5 and works well on iOS 14.0 and higher versions. Google Play ID: RijkeSoftware.GCTKiPhone. Languages supported by the app: