Is C♯7sus4 a hard chord to play on guitar?

No — C♯7sus4 has an easy open-position shape, so it's a good chord for a beginner to learn early.

Is C♯7sus4 the same as Db7sus4?

Yes — C♯7sus4 and Db7sus4 are two names for the same notes. This page uses C♯7sus4 as the more common guitar spelling.

C♯7sus4

C♯ dominant 7th suspended 4th · also written Db7sus4

C♯ · F♯ · G♯ · B

C♯ dominant 7th suspended 4th is a beginner-friendly open chord — there's an easy shape for it in the first position, so it's usually one of the first dominant 7th suspended 4th chords a new player learns. 8 ways to play it are shown below, easiest first.

Click any shape to hear it played.

Every way to play it

Already an easy open chord. There is an open shape for this one, so there is no capo trick or near-miss substitute worth showing — the first shape above is the one to learn.