Suunto app Forum Suunto Community Forum
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    Suunto ZoneSense

    Scheduled Pinned Locked Moved SuuntoPlus™ Sports Apps
    876 Posts 132 Posters 78.0k Views 115 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • J Offline
      jussim Bronze Member @herlas
      last edited by jussim

      @herlas I was going to report a weird thing I experienced on a morning run just the other day: the ZS screen stayed black & white the whole run. A random glitch or a bug that got fixed? We’ll see 🙂

      9PP since 09-2025.

      1 Reply Last reply Reply Quote 1
      • TieutieuT Offline
        Tieutieu Platinum Member @herlas
        last edited by

        @herlas : does update automatically applies to the app or it needs to be reinstalled ?

        Suunto’s devices at home :
        Vertical titanium solar
        Suunto Race S
        S9pp titanium sand
        Suunto Wing
        S9B titanium Ambassador edition, A3P, X6

        herlasH 1 Reply Last reply Reply Quote 2
        • H Offline
          halajos Bronze Member @Swaddy61
          last edited by

          @Swaddy61 ad ZoneSense makes is computations on the inter-beat (R-R) intervals of the heart to find patterns over a time window, if the heart rate is not steady enough for long enough (couple of minutes), then the result of all that math (a single derived number) can fall into the wrong bucket. I have experienced ZoneSense showing aerobic effort during uphill, when my HR was around my lactate threshold (top of Z4). In more steady state periods the result is much more plausible.
          As any technology, ZS also has its limitations.

          1 Reply Last reply Reply Quote 1
          • herlasH Online
            herlas Silver Members @Tieutieu
            last edited by

            @Tieutieu it should but it’s recommended to uninstall, sync, make sure it’s gone from watch, then install again.

            SRS Ti
            A3P (drill mode for pool swimming 🤦🤷)
            Galaxy Z Flip 3 / Galaxy S24+

            J 1 Reply Last reply Reply Quote 2
            • Brad_OlwinB Offline
              Brad_Olwin Moderator
              last edited by

              Three examples working well for me:
              First is 3 20 min Tempo Intervals. ZS was showing yellow for most of these on the watch and the app matches well. HR and ZS match up well.
              IMG_0639.png

              For the other two I ran a fairly long RPE 5-6 3.5 h Trail Run on Saturday 07/12 where my AT was near the threshold that has been measured.
              Screenshot 2024-12-08 at 5.08.06 PM.png
              IMG_0695.png

              Today 08/12 a day after the longer and harder run I ran easier in mid Endurance RPE4-5. Unsurprisingly even though the run was easier my fatigue from yesterday was apparent as my AT was measured at 130 bpm. ZS for me is accurately measuring my RPE in almost all cases.
              Screenshot 2024-12-08 at 5.09.29 PM.png
              IMG_0694.png

              Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing

              1 Reply Last reply Reply Quote 5
              • herlasH Online
                herlas Silver Members
                last edited by herlas

                3rd time ZS+ gets a new update in the last week or so, it wasn’t working with Race Nutrition S+ app and that was fixed.

                SRS Ti
                A3P (drill mode for pool swimming 🤦🤷)
                Galaxy Z Flip 3 / Galaxy S24+

                1 Reply Last reply Reply Quote 4
                • herlasH Online
                  herlas Silver Members @Zdeněk Hruška
                  last edited by herlas

                  @Zdeněk-Hruška @Francesco-Pagano, looks like he’s had a chat with Suunto and Monicardi recently and his original post has some new edit comments. Check it out.

                  Marco Altini’s blog:

                  https://marcoaltini.substack.com/p/q-and-a-what-are-your-current-thoughts

                  SRS Ti
                  A3P (drill mode for pool swimming 🤦🤷)
                  Galaxy Z Flip 3 / Galaxy S24+

                  1 Reply Last reply Reply Quote 5
                  • J Offline
                    jussim Bronze Member @herlas
                    last edited by

                    Strangest thing happened with the latest update on ZS app: suddenly I wasn’t able to select it for an activity. It was listed on SuuntoPlus section of settings but you just couldn’t activate it. Some combination on uninstall / reinstall and watch reboots finally resolved it, huh.

                    9PP since 09-2025.

                    1 Reply Last reply Reply Quote 0
                    • the_ultramanT Offline
                      the_ultraman
                      last edited by

                      My watch is Suunto Race. Why doesn’t Zone Sense work in trail run?

                      EgikaE Mff73M Brad_OlwinB 3 Replies Last reply Reply Quote 0
                      • EgikaE Offline
                        Egika Platinum Member @the_ultraman
                        last edited by

                        @the_ultraman said in Suunto ZoneSense:

                        My watch is Suunto Race. Why doesn’t Zone Sense work in trail run?

                        without more information, at which part it is not working for you, this is difficult to answer…

                        t6, S6, Elementum Terra, Ambit 3 Sapphire, Spartan Ultra Copper, Traverse Alpha, S7 Graphite LE, S9B Ambassador, S9P Granite Blue Titanium, S9PP Titanium Sand, Vertical All Black, Race Titanium Charcoal,
                        Race S All Black - TI Canary - Titanium Courtney

                        the_ultramanT 1 Reply Last reply Reply Quote 1
                        • Mff73M Offline
                          Mff73 @the_ultraman
                          last edited by

                          @the_ultraman
                          Are you using a belt and not OHR? Also, in pre-start screen, is it well connected to HR belt (green heart icon with belt around)?

                          Suunto Spartan Ultra (since 2016) FW: 2.8.24 (retired)
                          Suunto Vertical all black
                          Wife : S9PP
                          SA: Always the latest beta :)
                          Android 13, Galaxy S205G

                          1 Reply Last reply Reply Quote -1
                          • the_ultramanT Offline
                            the_ultraman @Egika
                            last edited by

                            @Egika said in Suunto ZoneSense:

                            @the_ultraman said in Suunto ZoneSense:

                            My watch is Suunto Race. Why doesn’t Zone Sense work in trail run?

                            without more information, at which part it is not working for you, this is difficult to answer…

                            When I start it as a run it works. When I start it as a trail run it doesn’t work.

                            EgikaE RayfoxR L 3 Replies Last reply Reply Quote 0
                            • EgikaE Offline
                              Egika Platinum Member @the_ultraman
                              last edited by

                              @the_ultraman what exactly does not work?
                              S+ screen is not there?
                              S+ screen shows wrong data`
                              S+ screen shows no data?
                              Activity in app has no ZS data?

                              please try to be more specific, so that we can get to the core of the problem

                              t6, S6, Elementum Terra, Ambit 3 Sapphire, Spartan Ultra Copper, Traverse Alpha, S7 Graphite LE, S9B Ambassador, S9P Granite Blue Titanium, S9PP Titanium Sand, Vertical All Black, Race Titanium Charcoal,
                              Race S All Black - TI Canary - Titanium Courtney

                              1 Reply Last reply Reply Quote 0
                              • RayfoxR Offline
                                Rayfox @the_ultraman
                                last edited by

                                @the_ultraman
                                Try deleting the ZoneSense S+ app from the watch and reinstalling it. That might help

                                1 Reply Last reply Reply Quote 0
                                • L Offline
                                  larrybbaker @the_ultraman
                                  last edited by

                                  @the_ultraman You enabled it for the trailrunning activity?

                                  SV Solar
                                  iPhone 16 Pro

                                  1 Reply Last reply Reply Quote 0
                                  • Brad_OlwinB Offline
                                    Brad_Olwin Moderator @the_ultraman
                                    last edited by

                                    @the_ultraman said in Suunto ZoneSense:

                                    My watch is Suunto Race. Why doesn’t Zone Sense work in trail run?

                                    I only use trail running and mine works perfectly. Are you using a custom or the standard sport mode? Any other Suuntoplus apps running in addition to ZS?

                                    Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing

                                    1 Reply Last reply Reply Quote 0
                                    • DareoD Offline
                                      Dareo
                                      last edited by

                                      I’m having a difficult time wrapping my head around the usefulness of the ZoneSense real-time watch display. My initial thought was that the real-time display on the watch would be useful for those days that I set targets for the 3 zones, but it is completely off from what my perceived effort is. Here are two shots from this morning’s run which wasn’t particularly challenging.

                                      IMG_20241219_081852.jpg

                                      According to the watch I should have been doing some serious huffing and puffing, but that wasn’t the case. The next image is from the app after synching my watch.

                                      Screenshot_20241219-085816.jpg

                                      Now that’s a more realistic picture of how I actually felt, so I really don’t understand why the real-time display on the watch is so off.

                                      Watch vs. App
                                      

                                      Aerobic 02’35 vs. 30’36
                                      Anaerobic 12’02 vs. 22’40
                                      VO2max 38’12 vs. 00’00

                                      This is a consistent inconsistency since I installed the S+ app on my watch. Could it be something so simple as perhaps needing to remove the app from the watch and re-install it, or am I totally ignorant of how to effectively interpret and use the real-time info on the watch while running?

                                      enriqueescomsE H 2 Replies Last reply Reply Quote 2
                                      • enriqueescomsE Offline
                                        enriqueescoms @Dareo
                                        last edited by

                                        @Dareo I have already told you this before:

                                        The same thing happens to me, inconsistencies everywhere. The live data from the watch never matches what is later indicated in the app. When it is indicated, of course, because sometimes that data appears and other times it doesn’t. I have uninstalled, re-installed, reset, etc. and everything remains the same. I still don’t know how I haven’t given up on the effort… it seems I’m a masochist.

                                        Suunto 9 Peak Pro (all black version)

                                        DareoD 1 Reply Last reply Reply Quote 1
                                        • DareoD Offline
                                          Dareo @enriqueescoms
                                          last edited by

                                          @enriqueescoms Enrique (¿o Quique?) - Yes, I remember you telling me, but I thought it was just growing pains for the app. Now that there have been a couple app and watch updates I figured that issue would be worked out, but that doesn’t seem to be the case. This is why I’ve thrown the question out there again, thinking that my brain is somehow incapable of properly interpreting the data.

                                          enriqueescomsE 1 Reply Last reply Reply Quote 1
                                          • H Offline
                                            halajos Bronze Member @Dareo
                                            last edited by

                                            @Dareo looking at your heart rate graph, your metabolism was not in a steady state, HR was continuously rising. Pace is not visible. Was this run supposed to be an accelerating or a steady-state run?

                                            DareoD 1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post

                                            Suunto Terms | Privacy Policy