To promote the single, Mendler went on a heavy promotional run for the song, including her tour, Bridgit Mendler: Live in Concert, Good Morning America and Live! with Kelly and Michael. The song has since sold 14.6 million digitial copies, making it one of the best-selling digital singles of all-time. In November 2021, 'Ready or Not' was 11× Platinum by the Recording Industry Association of America (RIAA), with inclusion of sales and streaming. It has since sold over 5.7 million digitial copies in the United States as of 2014, making it the third best-selling single by a Disney act. It reached number one in over twelve countries, such as Australia, Belgium, Canada, New Zealand, Romania, Ukraine, and the United Kingdom, making it her first solo single to chart within the top-ten. The song performed better overseas, where it became an international hit.

It remained in the top-ten for 25 non-consecutive weeks. The song became a massive hit in the United States, debuting at number three and eventually peaking at number one on the Billboard Hot 100. The song has received positive reviews from music critics, praising the song's unique sound and Mendler's vocals, which have been compared to Cher Lloyd, Carly Rae Jepsen, and Demi Lovato. The song's chorus is an interpolation of the Delfonics' ' Ready or Not Here I Come (Can't Hide from Love)'. It premiered on Radio Disney on August 3, 2012, and was released digitally on August 7, 2012. (2012), which garnered its name from a line in the song. ' Ready or Not' is the debut solo single by American singer Bridgit Mendler, and is the lead single from her debut studio album, Hello My Name Is. 2012 single by Bridgit Mendler 'Ready or Not'

Bridgit mendler ready or not cover