I am certified in Information Technology by American Institute of Certified Public Accountant in addition to being a CPA.
What you talked about like Quickbook and Quicken for individual small businesses, I would refer to them as "over the counter" canned packages. Quicken has more problems than Quickbook. Both and some other products are becoming more and more complicated to use. They want to do both accounting journal entries and financial reporting and touch screen type of user friendly feature.
I have two recommendations for you. One is to simply use Microsoft Excel. You have date, items, amounts, etc. When I do tax accounting for my clients, this is what I do. This method is simple, quick and clear to view.
The other is to consider a professional software. Drake software. It is cheap and relatively correct and has professional quality. It is designed for professional accountants who serve several and unlimited clients including payroll returns. It also comes with Drake Tax Software. This is one of the best products. I think the whole package is only like less than 1,200. I have no personal interest in this product or its name. You can search on line to review the product. Sometimes, they have local demonstrations. Their technical support on line is also good. I have not been on hold since I used their tax software for two years. For any of the other canned packages, we can even hardly find a telephone number to call. Enclosed is one of the website articles. http://taxingsubjects.com/drake-software/drake-client-write-up-a-top-contender-in-accounting-software
As to enter data from the cell phone, hopefully, you have less data than that to handle. Doing accounting on the go is not the best way to handle accounting and bookkeeping. It increases much chance for making mistakes.
Fiona Chen, MPA, Ph.D., CPA, ABV, CFF, CITP