I feel like we’re 90% there but there are limitations with the current app and so while the “timer” works, there are some inconveniences. 
Last night, when we went to bed, it was still quite warm so we decided to run the aircon on for 30 minutes. So we,
- Manually turned on the aircon
- Enabled the manual routine (to turn off the aircon after 30 minutes)
The aircon automatically turned off after 30 minutes. Yay!
This morning, all the usual automations were running (e.g. if >31 degrees, for 10 minutes, turn on the air con). What we didn’t realise is that the aircon kept turning off after 30 minutes as the manual routine was still enabled.
The Edge Counter Utility that you shared @h0ckeysk8er looks perfect. However, I’m really confused - (I feel so stupid saying this) - I don’t think I have a hub? I will continue to read up on it nonetheless.