stickK is unique - instead of setting and tracking goals in an isolated way, the app has created a system of binding agreements.
As a stickK user, you sign a Commitment Contract stating that you will follow through on your newly set goals and targets by putting money on the line.
There's a psychology of loss aversion in place to not lose the money you put in, but more importantly this can build accountability to yourself that you've physically committed to your new goal, and there's actual stakes to it beyond a purely mental stake.
stickK users have put $51 million dollars on the line and collectively created 533,000 commitments. The website also says its users managed to avoid smoking 42 million cigarettes. There's power in those numbers, so perhaps it's worth giving it a try.
stickK for iOS scores a poor 3.3 rating. See latest reviews.
stickK for Android scores an average 3.8 rating. See latest reviews.
stickK Review: Would You Put Money on the Line to Achieve Your Goals? by Money Crashers.
stickK is a free to download app, but to participate in the accountability system you have pay for the stakes involved.