Talking Exposure Timer

Is simple talking count-down timer for Android. As title says purpose of it is to help taking pictures where long exposure is required and one can’t look at watch, for example in astrophotography. That is also main reason why user interface is black and red. So, according to my intentions primary users should be people who are doing astrophotography and manual tracking or barn door tracking.
User interface is simple and we got frequency of announcements and duration spinners at the top, start and cancel buttons in the middle and info text at the bottom. If text to speech engine fails to initialize, start button is disabled and appropriate info is displayed. If text to speech engine initializes it will use default language for phone. Cancel is not immediate but is applied on first delayed post, during next announcement of remaining time.
To use it select how frequently you want announcements and how long exposure should be, after delay of 10 seconds, common for DSLR cameras in remote shutter BULB mode, it starts talking and counting down. While count down lasts, application obtains wake lock, screen will go dim but will not go to “sleep”. It is compiled for and tested on Android 2.2 device LG-P500.
Signed APK is available for download from here https://docs.google.com/file/d/0B0cIChfVrJ7WbkhISE5ZdGdSdmM/edit?usp=sharing, download, copy to SD card and open in file manager to install.
Eclipse project is here https://docs.google.com/file/d/0B0cIChfVrJ7WaS1oRl9lTUJUNmc/edit?usp=sharing, download, import in Eclipse and build.