GCTools

Name: GCTools
Rating: 3.1 (13 reviews)
Author: Achim Heynen

By: Achim Heynen

The geocaching tool collection

Features & Capabilities

GCTools - the geocaching tool collection!

Here you find the tools to get your next multi and mystery caches done easily.

Coordinates:

Target guidance
Projection of coordinates
Distance between coordinates
Intersection of lines
Intersection of circles
Intersection of line/circle
Center of circle
Coordinate conversion (DMS, DM, D, Lat/Lon, UTM, MGRS, Swiss Grid, Quadtree)
Saving/loading coordinates (inApp)
Mapview
Interface to GoogleMaps, GoogleEarth, OpenMaps, OffMaps, Navigon, TomTom, Pocket Earth and Waze

Ciphers De-/Encoding:

Affine Cipher
Alpha Cipher
Bacon Code
Baudot Code (CCITT-2)
Braille Alphabet
Caesar Cipher (ROT-N), ROT-5, -13, -18, -47
Finger Alphabet
Flag Alphabet
Pigpen/Freemason's Cipher
Hexahue Code
Mobile Cipher
Morse Code
Puzzle-Code
Semaphore Alphabet
Shutter Telegraph
Tomtom Code
Vigenere Cipher/One Time Pad
Custom alphabets
Saving/loading alphabets (inApp)

Interactive data tables:

Cross Sum
Latin/Arabic Numbers
Maya Numbers
Resistors
Periodic system
Color Alphabet
Prime Numbers
PI Digits
ASCII Code
Binary Code
German Police Codes

Converters:

Coordinates
ASCII/Number Systems
Lengths
Areas
Volumes
Masses
Angles
Speeds
Times
Pressures
Temperatures
Angles
Number systems
Data sizes
Flashlight
Menu favorites and search

If you find something missing let us know!

If you encounter problems with the app please mail to gctools@onedollarapp.com instead of writing a review here. We cannot contact you that way to find a solution.

User Growth & Download Statistics

App

By:

Achim Heynen

Rating:

3.10

(13)

Version:

3.4.5 Last updated: 2020-04-29

Version code:

835747134

Creation date:

2011-05-27

Compatible devices:

Size:

41.04MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-04

Compare stats and ranking:

Ranking

# 400,194 ▼ 2,314

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Achim Heynen

Apple Apps Store

https://apps.apple.com/us/app/gctools/id438313105

Website:

http://gctools.onedollarapp.com

User Reviews

Users praise GCTools for its powerful calculations, regular updates, offline data access, and all-in-one puzzle caching utility, especially useful in the field. However, many reviews report stability problems (crashes, launches failures), coordinate input and conversion glitches, readability issues, and concerns about paid features and data accuracy.

Pros

Powerful calculator/tool for values and calculations
Updated and maintained over years
Offline database and quick reference for field use
All-in-one tool for puzzle caching
Handy in the field with quick access to information

Cons

Frequent reliability issues: app not functioning, crashes, black screen after upgrade
Coordinate input/conversion glitches: numbers change when entering coordinates; incorrect conversions
Readability issues: numbers are hard or impossible to read in certain views
Paywall / limited free functionality and problematic in-app purchases
Data quality issues: spelling errors and incorrect data such as element names