The AWARE Legacy APK can be downloaded via GitHub: https://github.com/denzilferreira/aware-client/raw/master/downloads/4.0.836/aware-phone-universal-release.apk
The source code for AWARE Legacy can be found at GitHub: https://github.com/denzilferreira/aware-client.
To operate the AWARE Legacy setup, you will also need to run the AWARE server, which is available at GitHub: https://github.com/denzilferreira/aware-micro.