Top 1 Apps Similar to DVK 2015

My goal is to develop an application thatmakesit easy for the small independent business owners. Although Iwouldlike this app to be universal in terms of its use, it mainlycatersto people that go from job to job. I am using my father andhiscompany as the foundation of the ideas and functionality of theapp.He owns an independent contracting company. At times he isworkingon multiple jobs, going to different estimates and hasworkers inmultiple locations. How do I simplify the owners job?That is thequestion I am trying to answer through thisapplication.This application will be evolving within the next coupleofmonths with many updates. Consider this alpha testing so donotrely on the application until the app has a name(other thanAppName).!*!!!!App is in really early development. Saved informationmaybe lost with updated!!!*!________Time Information__________Date Started: 12/14/14_Latest Update 2/1/15_49 days since date started________Update Information________2/1/15* There are significant differences when the app is run onLolipopand the earlier versions- Lolipop version looks much better than earlier versions*Implemented FragmentStatePagerAdapter to the expenseactivity,swipe between expense categories.//TODO_______________________________General* Tablet fragments and views* Include Estimates* Update list and adapter communication within the fragmenttoaromatically update list (easy)* TextViews single line prevent overlaps with icons*Check for blanks in EditText fields to prevent force close* Remove the vertical lines that are generated in blankPDFtable.(easy)* Update the schedule Adapter to be more efficient(medium).* Update the graph layout to not look empty when there is nouserinput(easy)* Implement estimates that can be converted to invoices(easy,timeconsuming)__Contact Data:* Implement the ability to add contacts from the usersaddressbook(unknown, need to read).* Create a contact in the address book when the user adds acontactwithin the application(unknown, need to read).* Add "All Contacts" & search functionality to contacts pageonhome screen(easy)I am very busy with work and am limited to the time I get tospendon developing this application. Of course it is not an issue,it isjust going to take more time than expected to befullyfunctional.