Black Cat Systems

Need to compute the electrical resistance or voltage drop of a wire or cable? Now there’s no need to

If you’re a pilot, you often need to make lots of weather related calculations. Now there’s an easy

Do you want to get your weather charts without using an internet connection or a dedicated computer?

ClikTrak is a tally counter, or event counter, that you can customize. It also features extensive re

Want to monitor morse code transmissions, without using a bulky computer? Morse Pad lets you decode

Morse Mania is a morse code tutor app. Morse Mania provides the following modules to help you learn

Now you can decode DGPS (Differential Global Positioning System) beacon transmissions. DGPS stations

Looking for a way to play sound clips at a theater or sporting events, as a DJ, or at other events?

Synth 76477 is a powerful sound effects generator and synthesizer app, inspired by the famous SN7647

Synth Motion is a programmable sound effects generator, inspired by the famous SN76477 integrated ci