This is an amazing app, made transferring the messages almost painless! Way better than the other shady methods out there, and definitely worth a couple of pounds that you pay. The design is nice and easy to use, with the website providing most of the information you need. However, if you need to transfer media as well, you'll need to be careful. First read the update on the website, as the video is slightly outraged when it comes to media transfer. Also, the "profiles" folder needs to be inside the media folder apparently. Lastly, I had to manually locate the media folder on my phone. But honestly, it's nothing major as long as you watch the video closely for folder names and contents, read the FAQ and have some common sense.
I'm really glad I found Wazzapp migrator. I transferred my WhatsApp messages from my iPhone 5s to my new Android. This app was a life saver! I've kept all my messages on the new phone. The process took me about 20 minutes to do, and you need a computer. The instructions were good though.
Simple app with excellent service. I had to struggle three days to find out a smooth switch solution from iphone to android wrt whatsapp. And this app and the instructions finally helped.