For people with OCD
When the urge hits, wait it out.
Delay gives you a timer and a few simple tools for the moment an OCD urge shows up. You don't have to win the argument with the thought. You just have to not respond to it, for a little while, and then a little longer.
Free to download. Made by someone with OCD.
Delay is a self-help tool. It isn't therapy and doesn't diagnose or treat anything. If you can, work with a therapist trained in exposure and response prevention. The International OCD Foundation keeps a directory at iocdf.org/find-help. Therapists can read more on the clinician page.