esteem can be found on google play store and apple app store. As far as I know Stemify is only available on Apple smartphones at the moment => also on the App Store.SteemWhales is currently not up-to-date unfortunately (ping @heimindanger ;-) ) but I is a very good source of information.
Happy new year !
Thank you for replying, I appreciate it a lot :)
I have just found out this link with a (biiig) number of steem apps for anyone that might have the time to go through it
Happy New Year! http://steemtools.com/