All versions of Accounting of income and working time: freelancers

Big update: - Added the "Categories" function. Now you can distribute your earnings and working hours to pre-defined categories; - All operations are now unique and not summed by days; - Added work with backups, which can be used including for transferring databases between smartphones; - Added the ability to disable advertising; - The reports have been revised in favor of greater informativeness; - Fixed all known bugs.