Description

** Completely free and ad-free Estimate of Cycler power, using elevation and speed ** Advanced features such as * wind correction * momentum correction * customize your bike and equipment weight * customize your type of bike / tyres * calculates normalized / average power * export to Strava as a native field * very good accuracy reported by users feedback * high custimization possibilities within the user parameters Users Feedback (thank you for your feedback !!!) "I use this app on my every ride. I think this is by far the best power estimation I’ve ever used! " "Overall, it’s been a great app from the day one since its release. I have used xxxx , and boy it’s horrible. I expect it to be about 100w but it only says like 30w or so. I’ve seen comments and people complained about the same problem. Your app is the one with the most accurate power estimation, and I would love to see it getting better! " /*******************************************************/ I develop this for free on my spare time. A little indulgence is always appreciated ;) /*******************************************************/ When reaching out, please remember to include a proper greeting (e.g., "Hello") and a thank you. Courteous messages are always appreciated and will receive priority responses. I would be most grateful if you could take a moment to leave a 5-star ***** review. This greatly supports the app's free availability and visibility. /*******************************************************/ /******************************************************************************/ Acknowledgements This app has been developped with the help of IA (chatGPT / Gemini mainly), with a touch from myself /******************************************************************************/ If you encounter problems, please do the following: MAKE SURE YOU ARE USING THE LATEST VERSION. THE VERSION NUMBER IS DISPLAYED IN THE DATA FIELD. Make sure you have read all the doc. - Connect your device to Garmin Connect app - Update (bluetooth) - Connect your device to Garmin IQ app (bluetooth) - Install or update Virtual power - Set your custom parameters - nb: some old devices such as Fénix 5, Edge 130 do not support wind correction. Disable it. - sometimes : sync again with Garmin Connect ?? - Some devices need to be powered off / on to finish the update process If you still encounter problems : a) Desinstall the datafield from your device with connect IQ app. b) Check that it has really been uninstalled on the device c) restart device c) Reinstall the datafield and set your parameters d) Restart your watch e) reinstall your datafield in your activity screen f) In some cases I have been facing the need of a full reset of my watch. I hope you will not have to do this. /*******************************************************/ **FAQ:** **Q: How does it work?** **A:** The app estimates power by combining speed, elevation, and wind data. It calculates climbing power from elevation changes, air friction from speed and wind, and wheel friction from speed and tire type. Momentum correction helps with sudden changes in terrain. **Q: What does the smoothing time setting affect?** **A:** The number of seconds sets how long data is considered for smoothing. For example, 3 seconds means the app averages power over the last 3 seconds, while 30 seconds smooths values over a longer period, making the display more stable but potentially less respon

What is new

You can enter your cycle weight, clothes and equipment weight. You do not have to set your body weight in the app parameters, but please make sure that it is properly set in the connect IQ profile. You can choose the number of seconds you want to acquire. Default acquisition is made over the 10 last seconds. A Virtual power graph will appear in your activity, you can decide whether you want it to be displayed as a Strava field. NB : wind correction Wind data is fetched from Garmin Connect during rides if your device is connected via Bluetooth and your smartphone has a 4G connection. Older devices like Fénix 5, edge 130 series, but not limited to, may crash when using the new wind correction feature. Turn off wind correction to fix. v1.0 to 1.7 : beta app, calibrating the model v1.8 : add average Power /Normalized power v1.9 : Average/ Normalized power not updated when paused v1.10 : Config option to disable negative power display (in any cases, negative values are recorded as Zeros) + Config option to correct wind power (from Garmin weather forecast, if available); v1.11 : Try to fix previous regression.... v1.12 : Previous regression fixed; option to disable negative power display, option to correct windpower reactivated v1.13 : Display average / normalized power on the device yes/ no v1.14 : Minor Bug fix v1.15 : Average and normalized power are shown in Garmin Connect, even if not on device. Export to Strava is optional. v1.16 : Momentum correction : When you go downhill then climb with a huge momentum, you climb at a high speed, which generates spikes in power display. Enable this option to smooth values. v1.17 : Extand compatibility to more devices v1.18 : Enter Cycle & Equipment Weight in the units of your device.(kg/lbs) v1.19 : Bugfix v1.20 : Some devices such as Edge 530, Vivoactive 4 display very small fonts. Turn on corresponding parameter to fix. v1.21 : Users without cadence sensor can use the app, now v1.22 : Update to latest SDK 7.3.0 Older devices like Fénix 5, but not limited to, may crash when using the new wind correction feature. Turn off wind correction to fix. v1.23 : Support Fénix 8 series and more v1.24 : SDK 7.3.1 (add new devices - /!\ break compatibility with some old devices...) blacklist following devices from wind correction to prevent app crashes on very old devices( Edge130, Edge 130+,fēnix® 5 / quatix® 5,fēnix® 5 Plus,fēnix® 5S,fēnix® 5S Plus,fēnix® 5X / tactix® Charlie,fēnix® 5X Plus) v1.25 SDK 8.1.1 /*******************************************************/ This application is intended for recreational use. All data provided by the application are for information purposes only, and do not constitute a reliable source. The author does not guarantee the reliability of the data, and any damage resulting from the use of this application is the sole responsibility of the user. In no event will the author be liable for any damages arising from the use of this application. /*******************************************************/

Screenshots

Virtual Power · Screenshot 0 Virtual Power · Screenshot 1 Virtual Power · Screenshot 2

Supported language (1)

English

Compatible devices (228)

Approach® S50 Approach® S70 (42mm) Approach® S70 (47mm) Captain Marvel Captain Marvel D2™ Air D2™ Air X10 D2™ Delta D2™ Delta PX D2™ Delta S D2™ Mach 1 D2™ Mach 1 Pro D2™ Mach 2 Pro Darth Vader™ Darth Vader™ Descent™ G1 Descent™ G1 Descent™ G2 Descent™ Mk1 Descent™ Mk1 Descent™ MK2 Descent™ MK2 Descent™ Mk2S Descent™ Mk2S Descent™ MK3 - 43mm Descent™ MK3i - 51mm Edge® 1030 Edge® 1030 Edge® 1030 Plus Edge® 1030 Plus Edge® 1030, Bontrager Edge® 1040 Edge® 1040 Edge® 1050 Edge® 130 Edge® 130 Edge® 130 Plus Edge® 130 Plus Edge® 520 Plus Edge® 520 Plus Edge® 530 Edge® 530 Edge® 540 Edge® 820 Edge® 830 Edge® 830 Edge® 840 Edge® Explore Edge® Explore 2 Edge® Explore 820 Enduro™ Enduro™ Enduro™ 2 Enduro™ 3 epix™ (Gen 2) epix™ (Gen 2) epix™ Pro (42mm) epix™ Pro (47mm) epix™ Pro (51mm) fēnix® 5 fēnix® 5 fēnix® 5 Plus fēnix® 5 Plus fēnix® 5S fēnix® 5S fēnix® 5S Plus fēnix® 5S Plus fēnix® 5X fēnix® 5X fēnix® 5X Plus fēnix® 5X Plus fēnix® 6 fēnix® 6 fēnix® 6 Dual Power fēnix® 6 Pro fēnix® 6 Pro fēnix® 6 Pro Dual Power fēnix® 6 Pro Solar fēnix® 6 Solar fēnix® 6S fēnix® 6S fēnix® 6S Dual Power fēnix® 6S Pro fēnix® 6S Pro fēnix® 6S Pro Dual Power fēnix® 6S Pro Solar fēnix® 6S Solar fēnix® 6X Pro fēnix® 6X Pro fēnix® 7 fēnix® 7 fēnix® 7 Pro fēnix® 7 Pro – Solar Edition (No Wi-Fi®) fēnix® 7S fēnix® 7S fēnix® 7S Pro fēnix® 7X fēnix® 7X fēnix® 7X Pro fēnix® 7X Pro No Wi-Fi fēnix® 8 AMOLED (43mm) fēnix® 8 AMOLED (47mm/51mm) fēnix® 8 Pro fēnix® 8 Solar (47mm) fēnix® 8 Solar (51mm) fenix® 9 - 43 mm fenix® 9 – 47 mm fēnix® Chronos fēnix® Chronos fēnix® E First Avenger First Avenger ForeAthlete 245 ForeAthlete 245 Music ForeAthlete 55 ForeAthlete 645 ForeAthlete 645 Music ForeAthlete 745 ForeAthlete 935 Forerunner® 165 Forerunner® 165 Music Forerunner® 245 Forerunner® 245 Forerunner® 245 Music Forerunner® 245 Music Forerunner® 255 Forerunner® 255 Music Forerunner® 255S Forerunner® 255S Music Forerunner® 265 Forerunner® 265S Forerunner® 55 Forerunner® 570 - 42mm Forerunner® 570 - 47mm Forerunner® 645 Forerunner® 645 Music Forerunner® 745 Forerunner® 935 Forerunner® 945 Forerunner® 945 Forerunner® 945 LTE Forerunner® 955 Dual Power Forerunner® 965 Forerunner® 970 GPSMAP® 66i GPSMAP® 66i GPSMAP® 66s / 66st GPSMAP® 66sr GPSMAP® 67 Instinct® 2 Instinct® 2 Instinct® 2S Instinct® 2S Instinct® 2X Instinct® 3 – 45 mm, AMOLED Instinct® 3 – 45 mm, Solar Instinct® 3 – 50 mm, AMOLED Instinct® 3 – 50 mm, Solar Instinct® Crossover Instinct® E – 40 mm Instinct® E – 45 mm MARQ® (Gen 2) MARQ® Commander (Gen 2) – Carbon Edition MARQ™ Adventurer MARQ™ Adventurer MARQ™ Athlete MARQ™ Athlete MARQ™ Aviator MARQ™ Aviator MARQ™ Aviator (Gen 2) MARQ™ Captain MARQ™ Captain MARQ™ Commander MARQ™ Commander MARQ™ Driver MARQ™ Driver MARQ™ Expedition MARQ™ Expedition MARQ™ Golfer MARQ™ Golfer Mercedes-Benz Venu® Mercedes-Benz Venu® Mercedes-Benz Venu® 2 Mercedes-Benz Venu® 2 Mercedes-Benz Venu® 2S Mercedes-Benz Venu® 2S Montana 700 Montana® 700 quatix® 6 quatix® 6X Rey™ Rey™ tactix® 7 tactix® 7 – AMOLED Edition tactix® 8 – 47 mm, AMOLED tactix® 8 – 51 mm, Solar Venu® Venu® Venu® 2 Venu® 2 Venu® 2 Plus Venu® 2 Plus Venu® 2S Venu® 2S Venu® 3 Venu® 3S Venu® Sq. Venu® Sq. Venu® Sq. Venu® Sq. Venu® Sq. 2 Venu® Sq. 2 Music Venu® Sq. Music Venu® Sq. Music Venu® Sq. Music Venu® Sq. Music Venu® X1 vívoactive® 3 vívoactive® 3 vívoactive® 3 Music vívoactive® 3 Music vívoactive® 3 Music vívoactive® 4 vívoactive® 4 vívoactive® 4S vívoactive® 4S vívoactive® 5 vívoactive® 6

Recent metric trend

Rating
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Snapshot dates
2026-10-27 → 2026-11-01