Fast note app for quick lookup & copy to clipboard for osx & ios? I'm looking for a lightweight fast note app for frequently accessed notes, so that I could:

1) Rapidly copy them to my clipboard.

2) Simply view them.

3) Work &amp; sync across osx &amp; iOS.

Use cases:


Looking up &amp; copying address &amp; post codes of work/home.
Looking up various ID's that I use in various places (e.g my certification ID when clients ask).
Looking up notes on keyboard shortcuts or ways of doing things for apps
Lookup my notes for frequent bash commands with complex syntax.
etc.. 


I.e, it shouldn't be focused on being fancy, just fast viewing of note &amp; fast copy to clipboard.

This cheatsheet app seems close, but it doesn't have osx version:
https://itunes.apple.com/us/app/cheatsheet-quick-reference/id914665829#?platform=ipad 

[EDIT].

I'm fairly proficient power user, I'm aware of 'Notes' app. If you suggest it's use, please suggest how to it can resolve the request. E.g I haven't found a 'fast' way to copy note content from spotlight. (although CMD+c from spot light copies note title+content, which is close to what I need).
Before searching for a 3rd party utility, I would recommend trying out Apple's built-in Notes app. It seems to satisfy your three requirements as you can copy/paste from the clipboard, view them on both macOS and iOS, and it syncs with iCloud across all your devices (plus iCloud website).

Checkout these links for a how-to guide on each of the listed platforms:


iOS: Use Notes on your iPhone, iPad, and iPod touch
macOS: Notes for Mac: Notes overview
iCloud: iCloud: View notes on iCloud.com