Constantin: monitor effort drift against your session average
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Thank you so much. You did an amazing job designing everything—it all looks great.
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2.13 (2026-06-27) is live with a small bugfix:
- Each trend line now scales to its own movement, so a chart looks the same whether you view it in the combined drift view or in its own dedicated view.
- Fixed the effort direction for speed-based sports (such as hiking): moving faster than your average now correctly reads AHEAD instead of FADE (and correct green/red colors).
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Hi guys!
I’ve received a report from Suunto App from someone using Suunto Race S saying that Constantin is still crashing and rebooting the watch when used with manual laps without any other apps or GPS routes loaded.
I’m unable to reproduce such behaviour on my S9PP. Can somebody with Race S see if the app triggers the crash with manual laps triggered?
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2.14 (2026-07-07)
- The heart-rate zone bar and trend chart now react right away in workouts without speed data — indoor sessions, or while waiting for a GPS fix — where they could previously lag behind by a couple of minutes.
- The view you selected stays selected after lap and other watch overlays, and the trend keeps averaging smoothly through them.
- Shows – instead of STABLE until there is enough data to judge your effort.
Also, I’ve spammed 30+ manual laps and cycled through screens like mad and all is stable as a rock. Just didn’t manage to breake the app or the watch.
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I don’t know if others are experiencing the same issue on R2, but I can’t use this application. It seems like it’s not working at all.
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@Speed-Man can you explain a little bit more? What are you experiencing?
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@Łukasz-Szmigiel This morning I went for a run, but the Constantin app didn’t display my heart rate or speed on the screen. I checked it again just now, and it seems to be working normally now.
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@Speed-Man this is because the initial aggregation of data necessary for the graphs to display starts when the Constantin screen is displayed for the first time.
After it has been displayed at last once - it continues to collect the data so the graphs are fresh even when outside of the app. It is a good practice to cycle screens after the workout starts so that it can initialise.
Also keep in mind that the graphs are flushed after navigation panel settings change (route / poi load / unload) or when the S+ are loaded / unloaded.
This is not ideal but allowed for making the app way smaller and lighter so that three displays can be merged into one and well… It doesn’t crash.
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@Łukasz-Szmigiel Thank you. I’ll try using it now.
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