The best replacement for s pen is c pen.

The best alternatives to s pen are rated as following:
★★★★★  c pen
★★★★  adonit
★★★★  jot script
★★★  surface pen
★★★  wacom stylus
★  stylus

Your alternative for s pen is not listed? Suggest!
Speaking about s pen, one probably shouldn't forget about galaxy tab.

Other search terms related to s pen and their ratings are:
★★★★★ galaxy tab
★★★★ evernote
★★★ galaxy tab 3
★★ eraser note 10.1
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You have in mind a companion for s pen and it is not yet here? Propose!



Google Trends

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s pen
c pen
adonit