Tinder Book is a Tinder Client for iOS, but not only that. Tinder Book lets you browse through beautiful people without committing. If you are not sure, just let it sit for some time while you check few other people in your area.
Tinder Book also shows you people that have already liked you, so no fishing around, go straight for the match, make it happen.
Lots more are planned for the App, stay tuned!