Works mostly as advertised.
Downloaded and purchased a license to transfer Whatsapp messages from an iPhone 7 Plus to a Samung S10+. The app worked as advertised, very clear instructions on what to do and flawless execution. However, unfortunately some messages still went missing. As far as I can be sure it affects messages received the same day of the transfer, I can still see my own replies to those messages, but not the messages I replied to. I can see much older messages sent and received.