Mint is a free app for iPhone and Android. It allows you to do a follow up of expenses, generate budgets and book bill payments.
Having your bills adequately updated is something quite complex for people who work long hours per day. There is an app that aims to simplify and organize your finances.
It is called Mint, it is free and very effective.
The user can link his bank accounts and credit cards so that the system may build a budget automatically.
Security would seem to be its Achilles heel. However, the company states that they use a 128 bit encryption and a four digit PIN for every user. You may only see data by introducing a password. If the user loses or is stolen his phone he may eliminate the entire content of the app immediately.
The app can generate budgets by listing. For example, a certain amount of money can be send to leisure or buying clothes and you may gain clarity regarding how much money the user has available at the moment of making the purchase.