Hi there,
Are you looking for front accounting mobile solutions or create a new themes? If I am not wrong, you are looking for Mobile solutions right? Yes, I have just created a BETA version of Mobile Entries for Front Accounting, but It still in BETA development are still going on.
If you are interesting with FA mobile edition, you may try it yourself. This is the post that I referring to you
https://frontaccounting.com/punbb/viewtopic.php?id=2119
If you wish to test on some of the available API, you may test it here.
http://www.anterp.com/acct/api-acct-test.php
Firstly, you need to choose "Login" and click submit to perform user authentication.
Then, you may select any API to retrieve the data.
Once you have done, you may click "Logout" from the system.
Hope it help. Thanks