An useful app for keeping track of all coding contests happening across various platforms like topcoder, codechef, hackerearth, heackerrank, codeforces and etc.
APP LINK: https://play.google.com/store/apps/details?id=com.codebuff
You can get a remainder and get notification on time. Don’t miss any contest!.
Hope you guys find it useful 
I am one of the Developers.
Does it not provide details of external contests on codechef?
October long challenge not showing up in live challenges.
Also, it would be nice to allow user to select sites, app showing contest related to selected sites only.
A nice application.
Thanks for sharing the link
Thanx for the app…really nice and easy to use…
Thanks for your valuable feedback and we are continuously working on app features. Hope you ll give your valuable feedback and rating on play store.
Can you make the source code of the app available?
It ll provide all the contests of codechef. Can you please check with the latest update of the app. Hope it ll help you.
All the codechef challenges are now available in the latest update of the application. Selecting sites feature is under development, you can expect that in next update.