So, you want me to give you their phone number without their consent? uhm...no.
All the app does is send the numbers through a twilio script on election day that will shoot them a message: "Please Vote Today!"
I'm sure you're doing this with the best of intentions, and commend you for that. But you have to understand that healthy skepticism on the internet is necessary to protect yourself.
The twilio script we are using deletes the numbers after the text "Please Vote Today!" is sent to them. That's all the text will say; no advertising at all.
As someone mentioned above, the fact that it's got am "obama favicon", yet makes no other reference to obama anywhere is also sketchy. Being neutral about the importance of voting is a little more trustworthy.
Resolve all those things, and I'm still not to keen on giving out my friends' phone numbers for fear I'm adding them to a spam list.