Bhai sabse easy option hai - phone me already built-in app lock hota hai, bas settings me jaake “app lock” ya “lock apps” search kar. Samsung, Xiaomi, Vivo sabme mil jayega. Agar nahi mil raha to Google Play Store se “App Lock” ya “Norton App Lock” try kar, free me kaam karte hain aur setup bhi 2 minute ka hai. Bas ek pattern ya PIN set kar lena aur jo apps chhodna chahte ho unhe lock kar do.