UFO-CQ flashes your message to the sky using standard International Morse code. You enter a message, the speed to flash the letters, the delay between repetitive message flashes, the color to flash, and then press GO.
This app has no advertisements, gathers no data from the user, and doesn't communicate with a server. We charge a minimum amount for this app, but in return you are guaranteed a very safe experience. It runs fine without any cell service, while you're out camping for instance.
This app started as a modification of my bicycle brake light invention called Lucidbrake. There, I programmed eight bright LEDs to flash Morse code messages repeatedly at the sky. That was used twice while camping in the San Luis Valley in Colorado, and both nights we experienced very strange, yet positive "signals" in return.
"CQ" in Morse code is a request for communication, and is still in use by amateur radio and other people. My messages have always started with these two letters, followed with a positive greeting and request for any guidance to help our planet. This is just a suggestion, and you can type any message you wish.
You can check your message, or even learn Morse code, by flashing at a slow speed. When you flash at high speed, normal video camera frame rates and human eyes will not be able to catch and decipher the message.