Latch Tuner
Sample & 808 root-note finder
$4.99 · Designed for iPad. Not verified for macOS.
The tuner that doesn't give up on short sounds. Play a one-shot, chop or 808 — Latch Tuner holds the answer on screen and gives you the two numbers your sampler wants.
Know the note. Get the numbers. Back to the beat.
Ordinary tuners are built for long, sustained notes. Play a one-shot through one and the needle jumps around during the attack, then goes blank before you can read it. Latch Tuner is built for how producers actually work: it skips the attack, measures the body of the sound, and holds the answer on screen after the sample has ended.
How it works. You chopped a bass note from an old record and it's fighting your track. Insert Latch Tuner on the channel, trigger the pad once, and it reads:
E3 −26.5 ¢ · 324.6 Hz · MIDI 64
Set TARGET to the note you actually want — say C3 — and it does the conversion for you:
SEMI −4 · FINE +27
Those are the two numbers your sampler's pitch controls take. Type them in, retrigger, done. No looping the sample into a phone tuner, no guessing against a piano.
Two modes.
• LATCH — for one-shots, chops, plucks, vocal stabs and 808s. Transient-aware capture holds the reading until you clear it. Capture history keeps your last few results on screen, so you can work through a whole kit without writing anything down.
• LIVE — stop switching apps to tune. A straightforward in-line tuner for guitar, synth and voice, docked in a corner of your session.
It tells you when it isn't sure. A gliding 808 or a weak fundamental reads as low confidence rather than a confident wrong answer. A chord reads as its root, flagged rather than asserted. Noise and washed-out chops report no clear pitch, because there isn't one. Tap PLAY to hear a reference tone against the sample and decide with your ears — below ~80 Hz the tone adds an octave-up partial so you can hear it on a device speaker.
Speaks sampler. Note name, cents, frequency and MIDI note number, plus the SEMI/FINE correction to your chosen target. Samplers disagree about octave numbers, so the readout shows its convention next to every answer — and a C3/C4 toggle matches it to yours. It can't silently put you an octave off. Adjustable reference pitch (440, 432, 442…).
Runs where you work. An AUv3 audio effect — use it in AUM, Koala, GarageBand, or any other AUv3 host. Plus a standalone app that listens through the mic. Audio passes through untouched.
One-time purchase. No subscription, no ads, no account. Everything is analyzed on-device; nothing is recorded or uploaded.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Minor usability and interface fixes:
- NEW: First run now explains that readings hold. A one-time banner says readings stay on screen until the next note. The most common question since launch has been how to "reset" the tuner. The answer is that you don't have to: playing the next note measures it automatically. The HELD pill is there to clear the screen when you want it blank, not to re-arm anything.
- NEW: Tap LATCH tab item to clear and measure again. Tapping LATCH while it's still measuring does nothing, so it can't interrupt a capture in progress.
- IMPROVED: Hints now appear in the smallest plugin size. The compact plugin frame previously showed no hints at all, which made it the one place the app never explained itself.
- IMPROVED: The hint banner is sized to its text instead of stretching the full width of the window.
- FIX: Bigger tap target on the LATCH / LIVE toggle in small plugin frames.
The developer, Bruno Santos Marinho, 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
- Bruno Santos Marinho
- Size
- 2.1 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 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
- © Bruno Santos Marinho
