Tarte Adorbs is a cool fuchsia with a semi-matte finish that is permanent and retails for $20.00. In comparison, Makeup Geek Cha Cha is a cool fuchsia with a matte finish that is limited edition and retails for $12.00.
Makeup Geek Cha Cha is 85% similar — it is darker, more muted, lower quality, less glossy.