The Insomnia Coach App. It’s a completely free app on iOS and Android for tracking your sleep and developing the tools and habits for getting a full night’s rest. It’s a CBT-based app with a sleep diary, weekly training plan, and tools like guided meditation.
Weirdly it’s developed by the US Department of Veteran Affairs, which explains why it’s free and there’s no in-app purchases. Nothing about it is specific to veterans, and it’s one of the most commonly recommended apps for dealing with insomnia.
I can vouch that it helped reduce the frequency of sleepless nights for me, and I’d highly recommend it to anyone unfortunate enough to be dealing with insomnia.
I’m also PGE and it’s the same, about $0.50 per kWhr. I don’t even have AC, but I’m typically paying $150-$250 per month.