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Cog Display


This app calculates the gear ratio that you are currently using based on your cadence and your speed. Since it is impossible to determine what chain ring you are using, the app will display all the estimated cogs. For instance if you have a double chain ring 34/50, it will display the estimated cog for the 34 chain ring on the left and the estimated cog for the 50 chain ring on the right. It wo...

What’s New

Bug fix (1.0.4): On Edge 520, the display was very small. I believe it is now fixed with this version, but it is hard for me to test it since this bug does not appear in the Garmin simulator.</p><p>(1.1.0): Added support for Fenix 3 watch

Additional Information

  • Edge® 1000 Edge® 1000
  • Edge® 520 Edge® 520
  • Edge® 820 Edge® 820
  • Edge® Explore 1000 Edge® Explore 1000
  • Edge® Explore 820 Edge® Explore 820
  • fēnix® 3 fēnix® 3
  • fēnix® 3 HR fēnix® 3 HR
Average Rating: (26 Ratings)

14 October 2017

Una aplicación indispensable, me encanta ya que no tengo que mirar atrás para ver en qué corona voy. Gracias a esta aplicación me he aprendido de memoria los piñones que tengo.

06 October 2017

Presque parfaite... manque juste deux petites choses : le 12ème pignon et pouvoir visualiser le graphique dans Garmin connect. Merci

03 October 2017

Fantastic. It works perfectly. Simply and clear. Thank you so much.

04 September 2017

I miss the Setting for my 1x12 Speed Chainrings

08 August 2017

Super application ! Fonctionne vraiment bien et rapidement. Un plus serai de pouvoir avoir l'historique des valeurs / log dans l'activité Garmin Connect Merci !

02 August 2017

Bravo et le fait de proposer le code source c'est un super exemple. Reste plus qu'à connecter ça avec un Di et on a une boite auto :)

25 July 2017

de la balle , hyper réactif , que du bonheur plus besoin de regarder la roue arrière.....

20 July 2017

It works very well. I use it on MTB with Eagle 12V, It's possible to add the 12th cog? Thanks!

14 July 2017


30 June 2017

Very good. I would prefer to see only the active rear cog number (1-10), and much bigger. Once on the trail it is hard to read the small numbers. Good work, thanks!

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