According to Google Play (the official source for Android applications), the developer of SelamSoft English Amharic Dictionary released Amharic Fidel that is compatible with any Android device that uses Android OS 2.3 or above. Also, according to the official website of the SelamSoft English Amharic Dictionary, the software is only available to download for Windows OS. So there are low chances for what you have seen on other websites to be true. It is not advised to get an application for your smartphone from other sources than Google Play, but you can try to download and test it.