GCTools v2.0 is available!

After a surprisingly short review process version 2.0 of GCTools has been released! It’s been so short that we haven’t prepared the overworked functions overview yet 😉 That’s gonna change within the next few days!

Here is a list of new features:

  • new design
  • landscape support in all tools
  • search integration
  • redesigned cipher section
  • custom alphabets in cipher tools (inApp)
  • vigenere cipher/one time pad (inApp)
  • morse code de- and encoding
  • “mobile cipher” (mobile keyboard to digit converter)
  • cross sum computation
  • first 1,000 prime numbers
  • first 100,000 PI digits
  • number system converter (ASCII, base2-10, base16, base32, base32hex, base64, base85)
  • several bug fixes

So check out GCTools on the App Store:

GCTools v1.1 is available!

After a small release with bug fixes the first minor release has entered the AppStore! Watch out for the new features:

  • Intersection of line and circle
  • Intersection of two circles
  • Access to all data tables of myGEOTools.de
  • Imperial units for volume converter
  • further bug fixes

So check out GCTools on the App Store:

GCTools v1.0 is ready for sale!

In cooperation with my good friend Jan we developed a collection of tools that help you with getting along with multi and mystery geocaches. The app is called GCTools and ready for sale! We plan to enhance the app time by time. If you miss something, let us know!  Here is a list of the current functionality:



Interactive data tables




So check out GCTools on the App Store:

Songtronome v1.1.1 is ready for sale!

After Songtronome stopped working due to a change in iOS I did a lot of rework, clean up and bug fixing resulting in version 1.1.1

Check out the new version of Songtronome!






ColorPicker has been updated to v1.1!


After just a few days I updated ColorPicker and added a detection of RAL colors to the full version and a German localization.

Detecting colors of a color palette like RAL colors is always an approximation. Furthermore the detected RGB code depends on the image taken by the iPhone’s camera. As the camera does some “optimization” like adjusting the brightness the App can rely on that adjusted colors only. To get the best results use natural daylight conditions when using ColorPicker.

But long story short – check out ColorPicker on the App Store: