Thanks for the kind words everyone!
vasanthakokilam, nice Korvai, and thanks for sharing the link - you made my day!

Btw, have you tried the sharing features of My TalaVadyam? If you would like, you can share your creation with the My TalaVadyam community - currently, it is somewhat low tech - Exporting to My TalaVadyam Community sends an email to upbeatlabs. I can then upload to the website, so users can import it easily.
Great suggestion regarding exporting music file and apple loop - I'll add it to the list of enhancements in the future! Currently, the difference between the free version and the in-app purchase is that you can get rid of advertisements (which has the added benefit of the screen expanding to fill up the space occupied by the ad banner). Secondly, the free version supports sequences of length up to 150 aksharas, while the paid version doesn't have any limits. 150 is plenty to get started.
As for sollus mapping to sounds, different schools have different sollus for the same expressions. In your example, "Tha Dheem Gi Na Thom" will be played as Tha Dheem Ka Num Thom - Dheem is actually a basic sollu, a vibrational tone version of Dhi. My TalaVadyam does not have the Dheem sound currently, however. I would say the closest approximation would be Chap+Thom. ThaDhiGiNaThom would be Ki Ta Dhi Num Thom, so you see, there is no one-on-one correspondence of sounds, but rather, a translation of the entire phrase. AFAIK, Ri, Gi, Mi etc don't stand on their own, but as part of the phrase, which will translate to a set of sounds.
Version 2 of My TalaVadyam (currently under development) has the following changes:
1) Ability to save a (sub)sequence as a phrase (sollu sequence). Currently, there are 14 such phrases pre-loaded. With this change, you can create as many phrases as you like, and also have the ability to assign phrases of your choice to the phrase buttons (in the new version, there are 16 phrase buttons for the iPad - that means you can assign 16 of your phrases for immediate playing). With this change, and the ability to share, a cheat sheet of phrases would be a natural outcome!
2) "Live" mode has mridangam heads that you can play, for a more fun, realistic experience.
Hope you will all like it. Let me know if you have any suggestions.
Regards,
Sridhar