We don't have an app that can sync directly between an ipad and an Android tablet, but using the desktop and the appropriate conduits, you should be able to sync your data to both devices. Here's what you'd need, assuming you're desktop is Windows:
I need to sync and android tablet and iPad. How can I do this without a desktop? My sister poured juice on it, so temporarily I don't have access to a desktop pc
Sorry to hear of your mishap! There aren't any direct tools to sync between them but you could email the databases back and forth- both of the products will merge the changes in so other than the pain of having to send emails it works pretty well!
Alternatively you can access the iPad's desktop connect from the Android browser and vice versa to transfer files.