hDrop has released app version 0.51.0 and new sensor firmware, and the app is finally better to use. When I reviewed hDrop Gen 2 in July, the app was the main problem. The sensor itself was never the issue, and it still gives useful sweat and sodium loss figures for long, hot rides where getting fluid and electrolytes right decides how the last hour goes.
What has changed in the app
- hDrop says the update fixes interface bugs, improves login and adds safeguards against losing activity data when saving and uploading sessions.
- New firmware improves the connection between the sensor and the app during activities.
- hDrop now connects to Strava. Your fluid and sodium loss appear in each Strava activity’s description, and hDrop pulls back pace, effort and RPE so you type less into its journal. Strava does not show hDrop’s time-series sweat data.
Wahoo and Garmin
hDrop already shows live fluid and sodium loss on Wahoo ELEMNT ACE, BOLT 3 and ROAM 3, and records them to the ride file, as I covered when Wahoo added hDrop support in June. A bug stopped the figures appearing on some units. The fix is to uninstall the hDrop data field, reinstall it and update the bike computer’s firmware. hDrop’s Wahoo setup guide covers the pairing sequence.
On Garmin, the hDrop Scores Connect IQ data field has been updated to work on newer watches, including recent Fenix models. The field worked cleanly on Forerunner 970 when I tested it outdoors.
The data still needs calibrating
Out of the box, hDrop overestimated fluid loss in my tests, by 37% in a controlled HYROX session and 51% on a hot outdoor ride. A baseline calibration fixes most of that, and I explained why fluid loss runs high and what to do about it. hDrop says it is working on automating the baseline so that the correct sweat zones show on your watch or bike computer without the manual step.
The optional hDrop Lab subscription adds deeper analysis and race planning. The sensor and the standard app work without it.
Quick answers
Which hDrop app version fixes the usability problems?
Version 0.51.0 of the hDrop app, released in October 2026, alongside new sensor firmware. Update both.
Does hDrop work with Strava?
Yes. Your hDrop fluid and sodium loss appear in the Strava activity description. Strava does not show the time-series sweat data.
Why is hDrop not showing on my Wahoo?
Uninstall and reinstall the hDrop data field, then update the ELEMNT firmware. Only ACE, BOLT 3 and ROAM 3 are supported.
Do I need an hDrop subscription?
No. hDrop Lab is an optional add-on. The sensor and standard app work without a subscription.
Last Updated on 13 October 2026 by tfk the5krunner
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Kineon MOVE+: Red light therapy for niggles. It works.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID
