Having played with the GoWish app myself, my hands-on experience largely lines up with the company's background in that there's nothing immediately alarming about it.

Upon downloading GoWish, you're asked to create an account by signing up with your email address or logging in with your Facebook, Google, or Apple account. GoWish then asks you to enter your date of birth and gender, along with a checkbox that requests your consent for GoWish to send you marketing newsletters. The app makes it look like you need to check this to create your account, but you can leave it unchecked and use the app like normal.