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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...


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


  • Edge® 1000 Edge® 1000
  • Edge® 520 Edge® 520
  • Edge® 520 Plus Edge® 520 Plus
  • Edge® 820 Edge® 820
  • Edge® Explore 1000 Edge® Explore 1000
  • Edge® Explore 820 Edge® Explore 820
  • fēnix® 3 fēnix® 3, quatix® 3, tactix® Bravo
  • fēnix® 3 HR fēnix® 3 HR
平均評価: (39評価)

Peter Crosbie

Perfect on my 520. After only one ride, I wonder how I got by without it all these years! One star less for the image size. Using it in a 4-field display, and it's smaller - though not by much - than the other numbers.



Martin Littlewood

Please update for to enable a 12 cassette

Aurélien Dorgeret

C'est pour moi l'appli la plus utile installée sur mon 520. Elle permet d'éviter les croisements de chaine et de mieux gérer et rapidement ses rapports. Même en Mono-plateau elle reste utile car elle permet de vérifier quel pignon est utilisé sans regarder entre ses jambes ! C'est juste dommage qu'elle ne gère pas plusieurs profils quand on plusieurs velo avec des braquets différents et un seul compteur.


Fantastica, esperando la actualizacion para el 1030

Hans Lindskog

No support for 12 Cog systems, please add! First time using it today. The calculation does not work att all, it desplayed cog 12 almoust all my ride.

Andrew Phillips

Downloaded, installed, easy set up in Garmin express, went for ride tonight, works perfectly, Thank you, all those years of glancing down and back because not sure of what gear I was in (gone)


Fantástica, la uso en la bicicleta en la que no llevo el di2, funciona perfectamente si has introducido los parámetros correctos. Voy a cambiar mi Garmiin 1000 por el 1030, una pena que todavía no sea compatible con este último, ojalá actualicen pronto para hacerlo funcional con el 1030. Excelente trabajo.


Just downloaded this the other day and used it on my road bike (50-39-30; 11-34). What an excellent addition to my 1000. Is there an easy way to set up more than one profile—I have 2 wheelsets I use on my road bike, with different sized tires on each; and a wheelset on my MTB and one on my hybrid? Also—do you accept donations?

2018/06/27, Clement_Barthes

Hi mikennn, Thank you very much for your comments. It would be possible to have different settings if Garmin allowed us to install the app twice. Then you would use Cog_1 data field for your road bike and Cog_2 data field for your MTB. I sent them an email suggesting that, but they never replied. One option would be to publish the app twice, but what about people with 3 bikes etc... Thanks a lot for your generosity, but I do not have any donation platform.


Très pratique. Fonctionne super bien !!!


Very good. Can you update to Garmin 1030?