Finance-managing app with sub-sub-categories

[Android Central Question]

Does anyone happen to know of a very good droid budgeting app that allows its users to create sub-sub-categories or even go deeper than that? The only app that does this is Efics, but I am afraid that, having such a little userbase, they will just drop support and updates altogether, at some point. I've been using Money Lover for three years now, but the fact that you can't further subcategorize your transactions is a major downside for me. I've downloaded at least 30 budget apps and none have this seemingly easy-to-implement feature.

TL;DR: I'd need a budgeting app to allow for sub-categories up to four levels, at least.

1. Category.

1.1. Sub-Category

1.1.1. Sub-Sub-Category

1.1.1.1. Sub-Sub-Sub-Category

2. Category.

etc.

Thanks!