DAIKYOUJU LABS · THE INSTRUMENT LIBRARYEvery instrument.
Every instrument.
A clearer sound.
Explore musician-first tuning guides, learn the notes that matter, see authentic app screenshots and choose the right iPhone or iPad music tool.
19 instrument and practice guidesReal App Store screenshotsStep-by-step instructions
FRETTED COLLECTION
Guitars & Bass
Acoustic, electric, classical, and bass tuners built for a clean start.
INSTRUMENT GUIDEGuitarGuitarists switch between standard tuning, half-step-down setups and alternate tunings for different pieces. Whether you play steel-string acoustic, electrLearn how to tune
INSTRUMENT GUIDEAcoustic GuitarAcoustic guitar tuning benefits from a clear readout, especially when moving between open chords and fingerstyle arrangements. Standard tuning is E–A–D–G–BLearn how to tune
INSTRUMENT GUIDEElectric GuitarAn electric guitar can change pitch with tremolo use, string bending and alternative tunings. A tuner that clearly distinguishes the target note from the dLearn how to tune
INSTRUMENT GUIDEClassical GuitarNylon-string classical guitars are sensitive to string stretch, especially after restringing. Reliable pitch checking helps whether you are practicing étudLearn how to tune
INSTRUMENT GUIDEBass GuitarA bass guitar occupies a lower range, making steady note detection especially important. Standard four-string bass tuning is E–A–D–G; five-string instrumenLearn how to tune
ORCHESTRAL COLLECTION
Orchestral Strings
Find accurate open-string references for violin, viola, cello, and double bass.
INSTRUMENT GUIDEViolinViolin tuning calls for small and careful changes in tension. The familiar open strings are G–D–A–E, and players often begin by establishing a reliable A rLearn how to tune
INSTRUMENT GUIDEViolaThe viola uses C–G–D–A open strings, one fifth below the violin. Its lower C string and ensemble role make a dependable pitch reference particularly valuabLearn how to tune
INSTRUMENT GUIDECelloA cello is normally tuned C–G–D–A from low to high. Because the instrument has a wide pitch range and resonant body, careful open-string checks are part ofLearn how to tune
INSTRUMENT GUIDEDouble BassThe double bass plays an octave lower than many written string parts and requires attention to low-frequency pitch stability. Standard orchestral four-striLearn how to tune
WORLD COLLECTION
World Instruments
The distinctive tuning traditions of ukulele, mandolin, banjo, and beyond.
INSTRUMENT GUIDEUkuleleA ukulele responds quickly to small changes in string tension, making clear pitch feedback especially useful before practice or performance. Soprano, conceLearn how to tune
INSTRUMENT GUIDEMandolinA mandolin has paired strings, so even a small difference between the two strings of a course can be noticeable. Accurate tuning helps make chords, tremoloLearn how to tune
INSTRUMENT GUIDEBanjoBanjo tuning varies with instrument type, number of strings and playing tradition. A five-string banjo commonly uses an open-G family of tunings, while othLearn how to tune
INSTRUMENT GUIDECharangoThe charango is a small Andean string instrument with paired strings and a bright, ringing sound. Checking each course carefully can make its distinctive rLearn how to tune
INSTRUMENT GUIDESanshinThe Okinawan sanshin is a three-string traditional instrument with distinct musical contexts and tuning approaches. A dedicated tuner can help you prepareLearn how to tune
INSTRUMENT GUIDEBandurriaThe bandurria belongs to a family of small, plucked string instruments used in traditional and ensemble music. Paired strings make accurate pitch matchingLearn how to tune
INSTRUMENT GUIDEBalalaikaThe balalaika family ranges from the familiar prima to larger ensemble instruments. Their tuning needs differ substantially with instrument size and musicaLearn how to tune
TOOLS COLLECTION
Voice & Music Tools
Practice with pitch visualization, reference tones, and ear-training utilities.
INSTRUMENT GUIDEVocal PitchSingers often benefit from seeing how a note moves during a phrase, not just whether one isolated pitch is sharp or flat. Real-time pitch feedback can addLearn how to tune
INSTRUMENT GUIDETuning ForkA reference tone is a useful practice companion when developing your ear or preparing a part before playing. Tuning-fork apps can help you hear a target piLearn how to tune
INSTRUMENT GUIDETone GeneratorReference tones can support ear training, pitch comparisons and music experiments. A tone generator gives you a sustained audio point of reference while exLearn how to tune
MUSIC IS BETTER IN TUNEA useful guide.
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Our guides explain the practical process. The actual App Store pages show current app compatibility, features, and purchase options.
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