@coffeerepublic: Yes, they are! Voltage and Cybird are large mobile otome developers. Lots of their games require money to buy the routes (which are formatted as visual novels), and some F2Ps are spinoffs of those paid games where you can read alternate routes with the same characters for free. Of course there's limitations that can prompt you to spend, but you can play them totally free if you have patience!
Speaking of MysMess, the V route's been out for android, and is soon to come to iOS. I don't have the dedicated time as of now nor the hourglasses... has anybody else started playing through?