DonMingo

I use this to practice. It is very satisfactory to have this wherever I go and that it constantly works without fail.

There was another chime app, called Chime, that was the best. It could be customized for female or male voice. The chime could be customized for voice or a sound. This one seems to be limited as to what you can customize, or is not as straightforward as the other app. Second best is ok, perhaps.