I often struggle making myself understood correctly when spelling names or addresses over the telephone. Correct spelling is particularly important when booking trips or hotel rooms over the phone and neither you nor the other person are native English speakers. My AlphaBravo Speller UWP app spells and speaks for you. And just for fun it can beep in Morse code too.
You can enter any text and AlphaBravo Speller will spell it in international (NATO) or German (DIN) alphabet. It even spells special characters like &~;: etc. You can have it speak the spelling with any voice installed on your device. And just for fun try listening to your name in Morse code or beep an SOS to your colleagues.
AlphaBravo Speller offers a trial mode that randomly excludes some characters. Give it a try and have fun with it.