android tablet, food delivery order entry, pos, map.

this project is a repost. i had freelancer made me an app for this already. but then there are lots of bugs and the old freelancer doesnot want to work on this project anymore. so i want someone that can redo this app for me. i need the source code when the app is done. this app was design for archos it5 tablet. but now i want the app to be able to work on other android tablet or phone. please make sure the screen size will fit all machine. please have a look at the app i post if you have question please ask. let say if this app is installed in a phone i need the caller id can inject to the phone number input. i need the im to driver part of the old app complete redo with 1 click message send to driver. i need some improvement for this app. like the order entry change. add slide to (phone# - address - order - choose) when the day start i can choose which driver is working so, when the order entry finish i can easily choose driver and send im to them. the map needs to auto save now. driver names on daily record. able to back up and restore the data with separate customer info and order info. i own a local pizza delivery company. i need a software for an android tablet to manage order entry, customer address look-up when an order is being input by phone number and phone number look up with address input. able to do the inventory. and sales of the day. i have myself(driver), a second driver and a cook. i need the sales of the day can list 2 different driver. daily sales can export to a spare sheet with inventory left. i have an app here that was created by another freelancer. this thanks!! i will set a milestone of 25% of the bit. which will be release after 30 days of use, to check out if there are bud need to be fix or minor improvement. when it is all good then, i will release the fund and you need to give me the source code at that time.