A new app for iOS devices addresses this thorny issue. WonderWhen is dedicated to ensuring you never miss a release date again.
Custom built for iOS, WonderWhen employs a user-friendly, uncluttered design, offering three search options - titles, cast, and crew. You can search by typing or by using the inbuilt voice recognition tool. Simply search for a movie and WonderWhen will quickly return both the theatrical release date and home entertainment date. Of course, you're likely to forget this, so WonderWhen allows you to set a reminder for a few days before the release to ensure you don't miss out. This is particularly useful if you're a fan of indie movies that tend to come and go from theatres in the blink of an eye.
If you have an iOS device, you can download WonderWhen at bit.ly/wonderwhenapp or by searching for it in the iTunes app. If you require more info you can email the makers of WonderWhen at info@wonderwhen.com