Latch Tuner vs VAPolyPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Latch Tuner
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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 reading that wobbles between octaves is flagged instead of shown as a plain answer. Built for single notes: a chord reads as one of its notes, usually the root. 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.
VAPolyPro
Create a wide range of sounds with this polyphonic synthesizer, featuring multiple oscillator and filter types, MPE support, and built-in effects. It functions as a standalone app or an AudioUnit Extension for Mac and iOS devices, with iCloud Drive integration for project sharing.
- Multiple VCO and VCF types
- Stereo VCF and VCA
- MPE support
- Built-in effects
- Step sequencer
- Audio Unit Extension (AUv3)
- iCloud Drive project sharing
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VAPolyPro features three types of VCOs and three types of VCFs that can generate a wide range of sounds, from warm analog synths to FM-synthesized acoustic instruments. It also includes a stereo VCF and VCA for spacious sound, and MPE for expressive sound. VAPolyPro operates as a stand alone or as an AudioUnit Extension (AUv3) for iPhone, iPad and Mac. Stand Alone supports Ableton Link, MIDI and audio file export. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. Main Features 3 types of VCO includes Analog, Unison and FM. 3 types of VCF includes Cascade, Ladder And Sallen-Key. Stereo VCF and VCA. Support MPE through MIDI2.0 MPE Profile. Pseudo velocity/ pressure for iOS piano keyboard. 3 channel analog style step sequencer. Maximum 8 voice polyphony. it depends on performance of the device it is running. Built-in effects and piano roll sequencer. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Audio Unit Extension (AUv3). Support MIDI 2.0. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Support MIDI Foot Pedal (CC#11, CC#64) MIDI CC Settings are saved. It will be recovered when the app launched in the next time. Selectable UI Color. Font size for title of controls are adjustable. - Factory Preset 336 - Effects Preset 40 System Requirements (This app is offered as universal purchase for iOS and macOS) iOS 17.0 or later macOS 14.0 or later Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension.
Screenshots
Verdict
The clearest difference is price: Latch Tuner at $4.99 against VAPolyPro's $19.99. VAPolyPro's advantage is update cadence (every 2 days vs monthly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Latch Tuner costs $4.99 and VAPolyPro $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Latch Tuner ships an update monthly, VAPolyPro every 2 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.
| Parameter | Latch Tuner | VAPolyPro |
|---|---|---|
| Price | $4.99 — better | $19.99 |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 2 MB | 22 MB |
| Age rating | +4 | 4+ |
| Developer | Bruno Santos Marinho | Ryo Togawa |
In-app purchases
Latch Tuner
No in-app purchases
VAPolyPro
No in-app purchases
Questions
Is Latch Tuner free?
Is VAPolyPro free?
Do Latch Tuner or VAPolyPro have ads?
Which is updated more often, Latch Tuner or VAPolyPro?
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