A: 1) Can I buy tier 1 right now and upgrade to tier 3 by buying additional codes before the deal expires on appsumo ? I just want to test the platform with tier 1 and then upgrade to tier 3 , but if I decide to do it (which in all probability, I will) , I will do it before the appsumo deal expires . Is that alright ?

Yes. That's is possible.

2) I read in one of the earlier comments that you are planning to add annual subscription option for the apps . Will there be any discount on this annual subscription ? If yes, how much ?

No, nothing planned as of now. Will let everyone know if there would be any in the future.