Glitter Force, Saban's localisation of Smile Pretty Cure, makes a lot of changes, some subtle and some less so, as explained in this video.
This Clown Is No Laughing Matter: Smile Precure/Glitter Force Calculation Request
Thoughts on Pretty Cure
Smile Precure + My OCS (Civilian Vers.) by CureLilyXD on DeviantArt
Smile PreCure! Princess Peace PreCure Mascot Figure Ball Keychain JAPAN ANIME - Japanimedia Store
Smile PreCure! Cure Beauty Smile PreCure! Swing! Mascot Figure Ball Keychain JAPAN ANIME - Japanimedia Store
What if? Smile Precure was only a duo? by WipeoutNeo on DeviantArt
WaifuWednesday on Thursday - deus ex magical girl
SMILE PRECURE VS. GLITTER FORCE: A Comparison Video
Glitter Force: Group Transformation With Smile Pretty Cure's Transformation Theme! (Fanmade)
joyousmenma93 — LiveJournal
Smile Pretty Cure!/Glitter Force SDC: Episode 1