I would like to share ‘CodeHorizon’ with the CodeChef community. CodeHorizon helps coders like us to keep track of algorithm contests on sites like CodeChef, CodeForces, HackerEarth, HackerRank, TopCoder and few others. You’ll be able to view list of all the ongoing and upcoming contests on these sites, and receive notifications for upcoming contests while being online or offline.
Currently the app is available for iOS devices, and the android version will be available soon.
App Site : http://www.star-lord.me/CodeHorizon/
I hope this app is of some help. Please let me know if you have any suggestions on making the app a bit more useful.