What is the relationship between MIUI and Xiaomi in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Xiaomi has refined MIUI over the past year to create MIUI 7, which has a colourful interface with better performance, battery-saving optimisations and an even wider variety of personalisation options,” Xiaomi said in a statement.

Answer: developer