Password

I used to have an iPhone 5s and I had the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a>, in the settings it had a choice of having a password to where you could only get on your glow and view the information but now I have a galaxy s5 and it don't have the choice of having a password so now anybody who borrows my phone can easily can on the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> and view my personal information and I would just like to know if there is a way of getting the password if you have a galaxy? Or does it only have that choice with the iPhone?