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+-- Forum: PineTime (https://forum.pine64.org/forumdisplay.php?fid=134)
+--- Forum: Development Discussion on PineTime (https://forum.pine64.org/forumdisplay.php?fid=136)
+--- Thread: SlateOS for PineTime (/showthread.php?tid=20348)
SlateOS for PineTime - highjumpman - 08-11-2026
Hi everyone!
I humbly present SlateOS, a new open-source firmware for the PineTime, which supports JavaScript sub-apps that can be sideloaded without changing the firmware. Its low-level functions are based on InfiniTime and, in turn, FreeRTOS, so a big thank you to all those involved in these projects!
https://github.com/LeaCreative/SlateOS
I love my PineTime and wanted to be able to easily create apps for it. So I came up with the idea of using the watch as a thin client for my Android phone. In offline mode, the SlateOS offers watch face, step counter and heart rate sensing.
Connect it to the companion app on your phone and you can open the app launcher, which the app populates. The JS sub-apps, basically packaged JS code, run on your phone in the companion app, which tells the watch what to draw and accepts user input. This enables use of the phone's hardware, such as its GPS receiver.
In the companion app you can select which sub-apps you want listed in SlateOS' launcher. You can write your own JS sub-apps and I can't wait to see what you come up with! Just please read the sub-app rules doc, so that you'll be able to get it right.
I'd love to hear what you think about this!
Cheers,
Daniel
RE: SlateOS for PineTime - gzuh000 - 08-12-2026
very cool!
i love the idea of the phone doing much of the heavy lifting.
i gave it a run for a bit while at work today
the watchface is a bit cluttered for my tastes
the app list rendered weird with the buttons overlapping eachother
the install process was a bit confusing because i had to jump down to the bottom of the app to install the firmware before i could connect to the watch. the github made that clear, but maybe the app could hold your hand a bit more.
the maps app is really great and i think really shows off what this os can do
i put infinitime back on mine, but i will be checking inon your progress from time to time.
this could be the defacto pinetime os
keep up the great work!
RE: SlateOS for PineTime - highjumpman - 08-17-2026
(08-12-2026, 06:24 PM)Hi, thank you! I have since pushed some fixes and changes, which also fix the overlapping buttons. The watch face can now be decluttered by deactivating the face diagnostics elements in the watch settings on the watch or in the companion app. There's also a Navigation sub-app that supports turn-by-turn navigation from the OsmAns Free and Pro apps. I'll try to list everything in a separate post.gzuh000 Wrote: very cool!
i love the idea of the phone doing much of the heavy lifting.
i gave it a run for a bit while at work today
the watchface is a bit cluttered for my tastes
the app list rendered weird with the buttons overlapping eachother
the install process was a bit confusing because i had to jump down to the bottom of the app to install the firmware before i could connect to the watch. the github made that clear, but maybe the app could hold your hand a bit more.
the maps app is really great and i think really shows off what this os can do
i put infinitime back on mine, but i will be checking inon your progress from time to time.
this could be the defacto pinetime os
keep up the great work!