by Felix Bechstein
Call Meter lets you keep an eye on your mobile plans.
It shows statistics of your calls/sms/txt/data traffic and lets you set limits for each of these plans.
Call Meter supports a huge amount of billing modes to let you adapt it's behaviour to your operators billing.
This app is open source...
Good app for controling expenses on your phone — This simple and useful app counts calls, sms, internet traffic for given period. There are many options about costs of phone services. Moreover, there is supporting about 20 languages.