This app is a very important app for those who dont want to keep two phones and do both office and personal work on one phone. This app basically is just like a guest user thing in windows. The app can help you create more than one accounts on apps like WhatsApp and all which basically cant be used on one phone. Well using this app not just whatsapp can be created multiple accounts but also other apps which are compatible can also be used. So one space can be used for personal and the other parallel space can be used for business or vice versa thus saving money on buying an extra phone. Overall great app which has a great usefulness for everyone.