Add an unlimited amount of billing information about your clients. Very good if you want to write down time and services directly after it's done. You can save Corporate Identification Number, address, phonenumber and E-Mail on every client. Add an unlimited number of services on every client that can be based on expenditure of time and/or number of services.
Marc App is the official developer of Timesheet for Billing which can be found in the Business category. The tool has been downloaded and installed by over 1K users and the latest update is dated Feb 29, 2012. The average rating for this application is 4.7 on Google Play.
It's free to download the installer of Timesheet for Billing, also, you can take a look at users' reviews on Droid Informer. The app works fine on Android 2.2 and higher. This download is completely safe.