Portable Wi-Fi hotspot
Portable Wi-Fi hotspot is an app that, as it name suggests, lets you turn your Android device into a WiFi access point. In a few words, this app allows you to share your Android's Internet connection with other devices. Additionally, you can rename the connection and even set a password. Portable Wi-Fi hotspot basically provides a shortcut for WiFi tethering, an option included by default in the latest versions the Android operating system. On top of that, the app is extremely lightweight (a little more than 3 megabytes) so you can use it on practically any device.