21 Buttons content rating is Everyone. This app is listed in Social category of app store . You could visit 21 Buttons's website to know more about the company/developer who developed this. 21 Buttons can be downloaded and installed on android devices supporting 10 api and above.. Download the app using your favorite browser and click on install to install the app. Please note that we provide original and pure apk file and provide faster download speed than 21 Buttons apk mirrors. Versions of this app apk available with us:4.5.4 ,4.5.2 ,4.4.10 ,4.4.8 ,4.4.3 ,4.3.16 ,4.3.14 ,4.3.7 ,4.3.5 ,4.3.3 ,4.2.0 ,4.1.6 ,4.0.10 ,4.0.9 ,4.0.8 ,4.0.5. You could also download apk of 21 Buttons and run it using popular android emulators.