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An introduction to GVST GSnap, based on information from the maker and distributors: what it does, how to use it and who it may suit. It is not scored.
Gsnap will only work on monophonic input signals
— GVST official site
What is GSnap?
GSnap is a free pitch-correction (auto-tune style) effect distributed by the UK developer GVST. It is a VST plug-in, and the official page lists music production, broadcasting and general audio editing as uses.
It can be used to gently fix slightly off-pitch vocals, or to create a stylized robotic effect where the pitch jumps audibly between notes. Detection and correction settings are adjustable, so you decide how natural or how obvious the result is.
It works in two ways. In the fixed-scale mode you choose the allowed notes on a piano-keyboard display; in MIDI mode the input is snapped to incoming MIDI notes, so a sequenced melody can steer the pitch.
The input is expected to be a single melodic line, so it is not suited to chords or polyphonic material. A display compares the source pitch with the corrected pitch, so you can see what is happening while you adjust.
Fixed-scale mode
Pick the allowed notes on the piano keyboard and the input pitch is snapped to them. Allowing only the notes of your song's key may help pull stray notes toward the nearest one.
MIDI mode
The input is snapped to incoming MIDI notes. It can be driven live or by notes sequenced in the DAW, which may suit effects where the voice follows a programmed melody.
Detection controls
Min Freq, Max Freq, Gate and Speed set which pitch range is tracked, whether quiet signals are ignored, and how fast detection reacts. Narrowing the range to the voice may make tracking steadier.
Correction controls
Threshold, Amount, Attack and Release control how far off a note must be before it is corrected, how strongly it is pulled, and how fast the correction starts and relaxes. Lower settings lean natural, higher ones more obvious.
MIDI controls
Pitch Bend, Vibrato and Vib Speed handle bend range and vibrato depth and rate in MIDI mode. They are useful when you want to add movement back to the corrected voice.
Reference tuning
Calibrate changes the reference pitch (default A=440 Hz). It may help when the backing track is tuned slightly differently.
Pitch display
The display compares source and corrected pitch, so you can check whether the correction is too heavy while fine-tuning settings.
Specifications
| Item | Details |
|---|---|
| Type | Pitch-correction effect (VST) |
| Input | Monophonic |
| Modes | Fixed scale / MIDI |
| Detection | Min Freq, Max Freq, Gate, Speed |
| Correction | Threshold, Amount, Attack, Release |
| MIDI | Pitch Bend, Vibrato, Vib Speed |
| Reference | Calibrate (default A=440 Hz) |
| Price | Free |
What is included and system requirements
- VST plug-in (free)
- PDF manual
- Mac and Linux ports are mentioned (check the download options page for versions)
How to use it
- Read the license conditions on the official download page and get the version for your OS.
- Place the plug-in in your VST folder and rescan plug-ins in your DAW.
- Insert GSnap on the vocal track.
- In fixed-scale mode, select the notes of your song's key on the keyboard.
- Set Min Freq and Max Freq to the range of the singing voice.
- Adjust Amount and Attack to choose between natural and obvious correction.
- For MIDI mode, route a MIDI track's output to GSnap.
- Fine-tune with Threshold and Speed while watching the pitch display.
Light vocal pitch correction
Used with a low correction amount, it may help tidy slightly off notes without drawing attention.
Robotic voice effect
Fast, strong correction may create the stepped, robotic pitch effect.
Playing a voice via MIDI
In MIDI mode, a voice following a programmed melody may let you use it like an instrument.
Who it may suit
- People who want to try pitch correction at no cost
- Home recordists who want light vocal tuning
- Anyone aiming for a robotic voice effect
- Producers who want to steer a voice's pitch with MIDI
Good to know before you buy
- Input must be monophonic; it is not suited to chords.
- The page lists no system requirements, so verify operation in your environment first.
- The scale selection dialog may be unavailable in the Mac and Linux ports.
- The developer accepts donations via a support page.
Price
Free to use (GVST official site, checked 2026-10-27).
Sources: gvst.uk (checked 2026-10-27)
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