All Homeys should have SDK3, also all older models (if updated).
So yes, it will keep working.
And it must: after 1 jan 2023, all SDK2 apps will not be in the store anymore to download, thats why everyone needs to switch to sdk3.
But as far as i kinow, all devices are then supported (and will run more smoothly after bugfixing).
ok misunderstanding on my part. what everything an app is removed from the app store does it still remain on your homey?
Athom can not remove an installed app from your Homey, so it will continue to run as before.
That is nice.
So if I put old homey in satellite mode with a new homey. I can still use old sdk2 apps. that would be handy.
Here Dirk, Satellite mode!: [Vote] Feature App: Connect 2023 to Old Homey for Led, Speaker, Zwave(satellite) and network resource - Apps - Homey Community Forum
Do you want to test it also?
Got it working nicely already 
@HuisCHovens keep in mind Homey backup does not store the actual apps, but it only stores links to the app store.
When restoring a backup, it downloads the latest stable app versions.
So, if SDk2 version is gone, SDk3 version (if available) gets installed. Otherwise, you just lost the SDk2 apps, and the wait can beginā¦
Butā¦
Many apps are on Github or the like, download or fork the apps a.s.a.p. so you always can install them via CLI
If you have a new Homey for me, for sure.
Ah, i thought you had a second Homey.
Ahh, noā¦
Alright, who wants to test the Chronograph TEST version | Homey for SDK3?
btw, i have 88767 error counts in my develop log for this app from other people. I guess this app needs some work!
I have not resolved any issues, because i first need to make sure the transfer to SDK 3 is allright, before is start bugfixing.
I hope some of you will install the test version and let me know if all works as it did before.
I personally do not have this App in full usage, only a few simple timers.
So, whoever uses this app much, please let me know if all works fine!
Thatās quick again, Arie.
I use it in lots of flows (both type flows), installing it now.
The live version often says āthis app stopped unexpectedlyā, while it is not paused, and all timers just keep working.
Iāll send a diag when it stopped next time.
Fine, but i already have many logs 
There are some simple issues.
But i dont wanna mix sdk3 transfer bugs and already existing bugs.
But if/when you can confirm the 1.2.0 works correct, i sure ill get to the bugs.
Hi Arie,
As far as I can see and tested:
Timers, Stopwatch & Transitions work OK
The running/paused/stopped Timers/Stopwatches/Transitions arenāt shown anymore at app config/app settings.
Adding a Chronograph device:
Select a device screen results after a while in āerror: Callback is not a functionā
(I normally donāt use Chronograph devices)
v1.2.0 did not stop unexpectedly yet
But I did not log how quick or with which intervals de previous version errored
Okay, ill have a look at it tomorrow.
Okay, Version 1.2.1 in Test now: Solved, Solved and Solved.
No bugfixing yet
(Really need to keep the urge to change things around )
I am so sorry, i couldnāt resist, there were just a few very clear issues/bugs. I just solved a few.
Itās in test now: 1.2.2.
If people have further issues with Chronograph: Iāll only react/respond/solve issues generated with the SDK3 version (because thats the only one i can really bugfix and allready have gbugfixed a little).
Never apologize for fixing bugs 
I tested v1.2.3, it looks like te original app again, I canāt see any odd things, and everything works as expected.
Many thanks for updating this app!
Your welcome!
I would love to get the same response from other users: The Test version works as excepted.
If i get a few more responses, iāll put it to the review by Athom.
Thanks for the update!
No issues here on v1.2.3, using a few Timers/Stopwatches.
