This is a free Hebrew-English & English-Hebrew dictionary.
The main goal was to make a completely offline dictionary, so it'd work without internet connection. The app loads and processes a huge amount of JSON data so it might be slow and laggy, especially on mobile devices. So normally you may consider using online services like Morfix, while keeping this app for non-expected situations.
Note: if your Android web browser crashes every time you try to search a word, check out a new Milon app for Android. It' slow too, but at least it's more optimized and shouldn't crash.