In this day and age, we don't talk about minutes all that often, because, let's face it, most of us don't really use our phones for voice all that much anymore. For those who do, however, there is a specific need to monitor minutes -- whether prepaid or post-paid -- to prevent service disruption or, in the case of the latter, any overage charges. To help people in this situation, Yudiz Solutions developed an app that does exactly that.
The app is called Limit Your Call, and it will monitor your minutes, notify you when you're getting close to a user-defined amount, display your minute usage in the notification area, and even automatically end calls after a set amount of time, if you so choose. The app also features a rather handy widget so you can easily turn it on or off.
For some reason, it also features Facebook, Twitter, and Email integration for easy sharing (of what, I'm not sure).
Limit your call is available in English, Japanese, German, Chinese, French, Spanish, and Russian; you can grab it for free from the Android Market.