Extended IP Scanner allows you to find devices connected to your Wi-Fi network and get their IP MAC and info about network adapter's vendor. The scan range is automatically calculated based on the your device's current IP which you can see on the main screen together with additional info (model Android version) and Wi-Fi connection data (network adapter name SSID link speed). You can change IP range or update Wi-Fi data by simple click on the appropriate screen field. Also you can save and load by date all scan results you need. This app is completely free for non-commercial use.