All very good apps by dev who is clearly good him/herself too & is even to a degree it's app dev is on a high top rank Elite /World class Level & its why I need You Giving Tetherfi a fully opensource app which= open to all/any dev with any dev skills which I has Non of can Lend a hand so it can be as good as these apps im not sure if its dev Knows of Bluetooth tethering but with data Bluetooth is alot better by 80% at least show its dev how its done by adding Bluetooth tether pairing &a Repeater