Sing! Karaoke Review

Updated February 28, 2014
Sing! Karaoke
Bottom Line

Sing! Karaoke is a free app available for iOS and Android that lets you sing along with other users all over the world. While you can use Sing! Karaoke like any other karaoke app, playing for points or practicing your own performances, you can also join someone else's duet or group performance at any time without having to pay for the music track. For access to all songs, however, there's a pretty steep fee.


A karaoke party for all. Smule, the developer of Sing! Karaoke, says its mission is "connecting the world through music." Thus, the focus of this app isn't just singing music but sharing it. You can invite friends from social media to join your performances, and you can record your group efforts to post on the web, adding vocal effects if you wish. It's also possible to use Sing! Karaoke as a game, earning points for hitting the right notes, but it's the sharing features that set this app apart from others.

  • Sing with other users worldwide
  • Includes game element
  • Large music catalogue
  • Clunky interface
  • Some problems with Android version
  • New songs are costly

Setup and use

A bit clunky. One unique feature of Sing! Karaoke is its global view, which lets you view uploaded vocal tracks by location. However, reviewer Dale Culp of considers this view a "fancy trick" that doesn't work particularly well. He prefers the song-view mode, in which you can sort songs by date or popularity, but overall he considers the interface a bit clunky. Also, like most karaoke apps, Sing! Karaoke gets a few complaints about glitches from Android users. Some say it's hard to load songs, while others complain that it skips, crashes or takes forever to save a track.


Costs are confusing. Sing! Karaoke is a free app, and there's a small selection of songs you can download and sing free of charge. However, to access most of the 1,000-plus songs in the catalogue -- particularly the top hits -- you'll need credits, which you can earn in a variety of ways. The simplest is to pay for a subscription ($3 per week, $8 per month or $40 per year). However, you can also pick up a few credits by viewing advertising videos or signing up for online services, such as mailing lists. Kit Eaton of The New York Times says trying to earn credits is the most frustrating thing about this app.

Our Sources


Dale Culp, Aug. 24, 2012

Dale Culp gives the iOS version of the Sing! Karaoke app an overall rating of 3.5 stars out of 5, with 4.5 stars for iOS integration, 3 for user interface and 3.5 for reuse/replay value. He says the app "can be an awful lot of fun," but the interface gets a thumbs-down.

2. The New York Times

Practice for 'The Voice' by Using Yours with Mobile Karaoke, Kit Eaton, Feb. 13, 2013

Kit Eaton describes the Sing! Karaoke app as a cross between a karaoke player and a point-earning game. He says it's "polished graphically" and includes up-to-date songs and interesting audio effects, but earning credits for new song tracks can be a frustrating experience.

3. Google Play

Sing! Karaoke by Smule, Contributors to Google Play, As of March 2014

We found 35,000-plus reviews for Sing! Karaoke on Google Play. Users give the app 3.9 stars out of 5 overall, the highest rating we've seen for an Android karaoke app. While most users describe the app as tons of fun, there are many complaints about glitches.

4. iTunes

Sing! Karaoke by Smule, Contributors to iTunes, As of March 2014

There more than 230 reviews for the current version of Sing! Karaoke at Apple's iTunes store, and all versions have amassed roughly 44,000 ratings -- more than we've seen for any other karaoke app. Both the current and previous versions earn ratings of 4.5 stars out of 5.