CGDA Tuner

Cello, Violin, Guitar & More

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Play a string and the whole screen tells you — green means in tune. Cent-level precision, reference tones, and alternate tunings like Drop D & DADGAD. All free. CGDA Tuner is a fast, friendly tuner built for string players. Play a string and the whole screen responds — green means you're in tune, warm colours mean you're sharp or flat. No cluttered dials, no guesswork. NINE MODES, ONE TUNER - Violin, Viola, Cello, Double Bass - Guitar, Bass Guitar, Ukulele, Mandolin - Chromatic mode for everything else CLEAR, GLANCEABLE FEEDBACK - Full-screen colour that turns green when you're in tune - Note name, frequency (Hz), and cent offset at a glance - Fine-grained meter for landing exactly on pitch - Over-tension warning helps protect your strings TUNE BY EAR, TOO - Play a sustained reference tone for any string and match it — just like tuning to a piano ALTERNATE TUNINGS - Guitar: Drop D, DADGAD, Drop C, Open G, Open D, Half-Step Down - Bass Guitar: Drop D, Half-Step Down - Ukulele: standard high-G and low-G - Your last tuning is remembered for each instrument - Proper flat spelling (E flat, A flat …) where it belongs MADE FOR PRACTICE - Starts instantly and works completely offline - No account, no sign-up - All instruments and tunings are free — an optional Pro purchase simply removes ads Whether you're unpacking your cello before rehearsal or dropping your guitar into DADGAD, CGDA Tuner gets you in tune and back to playing.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Minor Bug Fix

Version 1.0.2

The developer, Sijun Yang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
    • Usage Data
    • Diagnostics

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Sijun Yang
Size
  • 6.5 MB
Category
  • Music
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Sijun Yang
  • Developer Website
  • Privacy Policy

    • More by Sijun Yang