Useless. The only way to use this app, is to buy their upgrade.
The free download is a waste of time. Every time you try to use the app, and generate a number, it will Pop Up A NAG SCREEN , a virtual “Pay Wall”, if you want to use our app, PAY. They want you to pay for the “pro” version of their app, and will even “give” you a few days, before making you pay. It seemed to work for a few numbers, but instead of the pay wall, it was either a thumbs up or thumbs down, icon to choose. You MUST choose one before generating another number, and THEN???? You get the pay wall again. There are BETTER Choices for a Number Generator, SKIP THIS ONE.