Claiming expenses on costs which have no receipts is a pain.
Its hard to remember them, hard to list them out; you are always on a rush and never have the time to note them down. But they add up to a lot pretty soon. NoReceipt$ is the app to save you from this.
It is simple to use, it takes just a few taps to log the expense and it gives you handy notifications if you are over budget on particular category (like cab fares) or if on total per diem. It also has the auto use credit thing covered - just put in the miles and it logs the cost according to the auto credit rate you setup.
Once you start using it, you would always think how you survived without this for so long!