First of all make sure to have a recent unencrypted iTunes backup, like explained here

Then you can use any iTunes extractor to obtain the required ChatStorage.sqlite, like the free ones provided below:

Now you just need to transfer ChatStorage.sqlite to your Android device in the WazzapMigrator folder.

If you experience any issue please use another extractor or contact me

How to extract ChatStorage.sqlite on Windows - Step 1
How to extract ChatStorage.sqlite on Windows - Step 2
How to extract ChatStorage.sqlite on Windows - Step 3
How to extract ChatStorage.sqlite on Windows - Step 4
How to extract ChatStorage.sqlite on Windows - Confirmation