Tuner Pro is the tuner built for working musicians — fast, accurate, and packed with everything you need to stay perfectly in tune. A clean, responsive dial shows you exactly where you are in real time — whether you're a cent sharp or flat, you'll know instantly. TUNE ANY INSTRUMENT • Chromatic mode — detects any note, any instrument • Instrument mode — see all your strings at a glance • Guitar, bass, ukulele, violin and more ALTERNATE TUNINGS • Drop D, Open G, DADGAD and more built in • Build and save your own custom tunings • Switch between tunings instantly ACCURATE & RELIABLE • Precise to within 2 cents • Fast note detection — no lag • Works completely offline No sign-up. No subscription. Your tunings are saved and ready whether you're at home or on stage. Download Tuner Pro and play in tune.