Disclaimer: I have put the following links in good faith, with the intention that they might be useful for some people. I do not carry responsibility for the links’ content. Please follow the links below and make your own judgement on their usefulness in your circumstances.
Nightmares: From Nightmares to Peaceful Sleep
(Although the following Apps are created for military personnel, most of them are fully applicable for civilian population. Feel free to explore and make your own judgement. Some apps are available only in Apple store where others are available on Google Play store)