I haven't acutally read what those application do in detail, but afaik apps cannot read data from other apps (that is, it's not possible for a 3rd party app to

I haven't acutally read what those application do in detail, but afaik apps cannot read data from other apps (that is, it's not possible for a 3rd party app to read the credit card information you entered in another app, atleast not without you granting it the permission to do so). So, i suspect those were apps that pretended to be official (so, yes, phishing apps ;) ). Just wanted to clarify :)