Default One-handed operations for CustomRoms

Is there an app for reducing screen size for one-handed operations like samsung published fore the note 3?
Would appreciate it for my S4 as well.

I know there was an app like that back in the days but forgot the name.
Samsung Galaxy S4 i9505, SlimKat Weekly 4265 with Xprivacy
Moto Defy/Bayer, CM11 Quarx 14-03-27 with Xprivacy

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