TWRP and RedWolf are touch screen enabled recovery projects which is mainly used to flash software images, OTA updates and is also used to take full backup of system partitions such as System, Vendor etc. Most of the rooted phones have TWRP/RedWolf recovery images installed. Stock recoveries allow limited operations and are not touch based. Stock recoveries are usually operated via the volume and power button. Hence custom recoveries were developed.
Difference between TWRP and RedWolf Recovery
TWRP was first developed by Team Win hence the name Team Win Recovery Project(TWRP). TWRP has all the basic features required for flashing mods and firmwares. RedWolf Recovery is based on TWRP with some added features and better looking UI. Moreover RedWolf recovery supports MIUI OTA updates, which means MIUI OTA updates can be flashed via RedWolf recovery. RedWolf Recovery and TWRP have a completely different looking User Interface. But the procedure to open and use the two recoveries remains same.