No problem. FYI I don't have anything against something "not useful". It's just that storage space on a phone is scarce for a lot of people because everyone w

No problem. FYI I don't have anything against something "not useful". It's just that storage space on a phone is scarce for a lot of people because everyone wants you to install the app instead of going through their website for their services. Individual apps may not consume much storage and computing power, but in sum, it's a concern for people with mid-tier Android phones. And then, people start to filter by usefulness, if they don't see why your app is fun or engaging. So think about maybe explaining / having someone explain why it would be fun to use your app! I wish you success.