Beijing Qule Technology Co., Ltd.

Founded in 2015, this developer has established a strong presence in the mobile app market with 7 published applications. Since launching their first app "听音识谱练习" from 31 January 2015 in the Lifestyle category, they've expanded into Music, Lifestyle, Utilities, Education sectors, demonstrating versatility in app development.

Their portfolio has garnered over 310 reviews across all apps, maintaining an impressive average rating of 3.1 / 5 stars.

Notable releases include:

🥇"弹琴吧-钢琴吉他学习平台" - Their most reviewed app with 222 reviews and a 4.6-star rating, released in 07 November 2018 in the App Store.
🥈"Metronome(easy to use)" (Utilities) - 58 reviews with 4.5 stars, released in 07 September 2016 in the App Store.
🥉"吉他调音器（最好用的调音器）" (Utilities) - 22 reviews with 3.6 stars, their debut app from 08 September 2016 in the App Store.