http://iscoresports.com/

I am sure this has been asked before, but I cannot seem to find it in the forums. I recently purchased a new tablet android based and currently have iscore baseball on my android phone. DHOw do I get the ap to my tablet without paying or do I have to pay again?
And can I use both devices to score a game not at the same time, but if I decide to use the tablet one game and the phone another game.

Yes you can re download for free- just use the ID/account you used to purchase originally

The standard protocol for both android and iOS app stores set by Google and Apple is you can re down load any app you already purchased for free as long as you log in and download from same account you purchased it with

Yes IScore does let you score (and data share back and forth) with different devices ( just not at the same time).. Many of us score with different phones, tablets. More info on this can be found on the FAQ page and in the user manual

FAQ = http://iscoresports.com/baseball/support.php

OK..So If I go to google play store with my tablet where I originally purchased the ap with my phone I should be able to re-download? I started to do that last night but it wanted me to put in payment options so I bailed out.

As long as you are using the same Google Play account you already purchased iScore with, yes, it will let you install again without having to pay. If it is making you pay, it means you are not logging in with the same account you originally purchased iScore with. You can search your email history for a receipt from Google Play for the original purchase to see what email you had used. If you can't find it, you can try contacting Google Play's support.

Yep that is the issue, I have a second google account I was trying to download with. If I use this second account will it have an efect on game/data sharing etc.

No, data sharing works even across devices from different accounts.