TradeStops can help you track options too.
One of the components affecting the price of an option is how much time is left before the option expires. This is known as the time-value of an option. As the expiration date approaches, the time value component of the option decreases – sometimes rapidly.
Time Value/Expiry Alerts allow you to be alerted when the time value falls a certain percentage or dollar amount below your initial time value. The Percentage Time Value alert and Dollar Time Value alert can be used for this purpose.
The Expiry Alert is for setting an alert a certain number of days before your option expires, so you can review your option status before its expiration date.