Yard25

Yard25 is a family software studio that designs and develops native applications for iPhone, iPad and Mac. Its first published app, Tunero, is a chromatic tuner that analyses pitch in real time on the device, shows deviation in cents, and works without an internet connection.

Tunero is offered on the App Store without ads, accounts or subscriptions, and the website states that no audio is recorded, stored or sent anywhere. The company says more apps are in development and will be added as they reach the App Store. Customers are iPhone users, such as guitar, ukulele, violin or voice musicians, and the site does not describe a separate revenue model beyond the app itself.

Yard25 s.r.o. was founded in 2026 in Kašperské Hory, a small town in the Šumava mountains in the Czech Republic. The website names Jakub Martinec as founder and describes the company as a family business that designs and develops its apps in-house.

Product: Tunero, a chromatic tuner app for iPhone that detects pitch on-device and shows note, octave and deviation in cents.