【Strum Once, Tune Instantly】
SLACKER TUNE is the ultimate 6-string polyphonic (simultaneous) guitar tuner designed for the minimalist guitarist who values speed, precision, and raw aesthetic.

Simply strum all six strings open, and the app instantly detects which strings are out of tune. No more plucking one by one—get perfectly in tune in just a few seconds.

■ Free Features
・Polyphonic Tuning: See the tuning status of all 6 strings at a single glance.
・Cyber-Neon Visuals: Sleek LED & neon-style meters that look stunning on dark stages and match your pedalboard vibe.
・High-Precision DSP: Built on a fast and accurate frequency analysis engine for seamless real-time response.

■ Go Pro: Unlock the Ultimate Custom Tuning Suite (One-time purchase for $1.99)
Ready to take your rig to the next level? Upgrade to the Pro Version to unlock professional-grade features and complete customization:

・Multi-Instrument Support: Seamlessly switch to 7-string guitar, ukulele, or violin. The interface, string count, and target pitches adjust automatically.
・Advanced Chromatic Mode: Access a dedicated screen that detects any note instantly with clear note name and exact cent indicators.
・Key & Tuning Presets: Instantly select from popular presets (Standard, Eb, Drop D, Drop C#, etc.), or save your own custom configurations. Fine-tune using the interactive slider and ± buttons.
・Fully Customizable Mode: Choose between 4 to 7 strings, customize the exact note and octave for each individual string using easy dropdowns, and save your custom presets for instant recall.

Perfect for quick tune-ups between songs at a gig or right before a studio session. Spend less time tuning and more time playing.

Upgrade your workflow with SLACKER TUNE—smart, fast, and effortlessly cool.