Maguro Tuna
0.1 cent strobe tuner
$4.99 · Designed for iPad. Not verified for macOS.
Maguro is a strobe tuner built to the standard of the hardware strobes that repair shops and pros rely on, in an app that opens fast and asks for nothing.
A REAL STROBE DISPLAY
The four-band pattern is driven by the signal itself, not a smoothed needle. Sharp drifts one way, flat drifts the other, and in tune the pattern freezes solid. The fine bands resolve fractions of a cent while the coarse band stays readable from across the room.
ACCURACY YOU CAN TRUST
Detection runs in two stages: period detection that stays on the correct octave even when a phone mic can barely hear a low string's fundamental, then a phase stage that measures the harmonics where the energy actually lives. On a clean tone it resolves better than a tenth of a cent.
MADE FOR REAL ROOMS AND REAL STRINGS
The tuner learns your room's noise floor, so refrigerator hum and mains buzz never start phantom notes. Decaying wound strings keep reading to the end of their sustain. The readout sits still while you listen and moves the moment you turn a peg.
GUIDED TUNING ON REAL INSTRUMENTS
Tap a tuner post on a photographed headstock and tune string by string. Tunings: Standard, Drop D, DADGAD, Open G, Open D and E flat, plus mandolin and ukulele on their own instruments. A piano keyboard picks any note for everything else.
FOR PLAYERS OF ALL KINDS
- Concert A calibration from 390 to 490 Hz in 0.1 Hz steps, with 415, 432, 440, 442 and 444 presets
- Temperaments: equal, just, Pythagorean, quarter-comma meantone, Werckmeister III and Kirnberger III, with selectable root
- Sweetened presets for guitar, 12-string and bass
- Transposition display for B flat, E flat and F instruments
- Reference tone, note lock and a pitch history trace: hold a note, and a straight line means a steady tone
- A haptic tap when you land in tune, VoiceOver support throughout, and the screen stays awake while you work
PRIVATE BY DESIGN
No account and no ads. Nothing is collected, and audio never leaves the device.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bigger strobe on big screens. On iPad in landscape and the new iPhone Duo, the strobe now sits beside the readout at full height, with the note, cents meter and controls in a column next to it.
The developer, Alchemaize, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- AlchemAIze, Inc.
- Size
- 4.4 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.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 AlchemAIze, Inc.
