Xposed Framework your one stop shop for all mods. What makes Xposed so special is the fact that it only requires root. The Galaxy S7 and S7 Edge US Qualcomm variants just received root. We still do not have an unlocked bootloader on these devices and there is currently no way to install TWRP or CWM recoveries. While this is the case you will be happy to know that you can still install the Xposed Framework on the Galaxy S7.
How To Install Xposed:
-Download and Install FlashFire from the PlayStore
-Download the Xposed APK
-Install the Xposed APK
-Open FlashFire, give it SuperSU permission and Flash the Xposed Framework zip
-Once the zip file is flashed your phone will reboot and then optimize apps. This takes about 10-15 minutes so don't freak out.
-Enjoy Xposed!
via XDA