GSi Piano Studio vs VAPolyPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GSi Piano Studio
This application uses advanced synthesis to recreate the sound of a grand piano. Users can customize various elements of the piano's mechanics to achieve unique sounds. It requires a physical MIDI keyboard for playback and is best suited for modern devices.
- Physical modeling sound generation
- Full polyphony
- Virtual sympathetic resonance
- Customizable velocity curves
- Session Recorder
- AUv3 plugin support
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GSi Piano Studio is a software that recreates the sound of a gorgeous Grand Piano using Physical Modeling synthesis. INSTRUMENT BACKGROUND There are two ways to recreate the sound of a Grand Piano digitally: either using large sample sets, or using synthesis. As for the sample approach, GSi offers Genuine Sounds Vol. I that includes a wide variety of large sample sets directly recorded from actual acoustic instruments. Piano Studio, instead, recreates the sound using mostly digital synthesis techniques, by replicating the single elements that constitute the complex mechanic assembly of an actual piano: keys, hammers, strings, soundboard, enclosure, lid, etc. Some of these elements can also be modified via user parameters, such as the string dampening, detuning, sympathetic resonances, impact on the duplex-scale, hammer hardness and so on, so that the sound can be further refined or altered in order to obtain a different flavor of sound, or even something that goes beyond the natural sound of a Grand Piano. Main features - Full polyphony - Virtually unlimited dynamics - Long and natural decays - Supports real sympathetic resonance - Supports half-pedal and re-pedaling - 6 Ambience selections - 12 Virtual microphones - 9 Preamp types - Built-in limiter/compressor - 6-band visual equalizer with spectrum analyzer - Ping-Pong delay and Reverb - Customizable velocity curves - Session Recorder: records while you play, loads/saves SMF - Program manager with unlimited Programs - Available as Stand-alone App and AUv3 plugin - Low CPU load and RAM usage Please note: this App has no screen keyboard, you need to connect a physical MIDI keyboard to play. Also, you need a modern device, possibly iPad 9th gen or newer, iPhone 14 or newer. Older devices might not have enough CPU power for performing well at full polyphony.
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
GSi Piano Studio and VAPolyPro both sit at 5.0 stars, but that hides the real split: 100% of VAPolyPro's written reviews are positive against 33% of GSi Piano Studio's. VAPolyPro also leads on price ($4.99 vs $19.99) and update cadence (every 2 days vs monthly). On rating, ratings volume, ads and in-app purchases 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
GSi Piano Studio costs $19.99 and VAPolyPro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for GSi Piano Studio against 5.0 for VAPolyPro. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 33% of GSi Piano Studio's written reviews are positive against 100% of VAPolyPro's.
GSi Piano Studio ships an update monthly, VAPolyPro every 2 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.
| Parameter | GSi Piano Studio | VAPolyPro |
|---|---|---|
| Price | $19.99 | $4.99 — better |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 99 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Genuine Soundware | Ryo Togawa |
Customer experience
GSi Piano Studio
VAPolyPro
In-app purchases
GSi Piano Studio
No in-app purchases
VAPolyPro
No in-app purchases
Questions
Is GSi Piano Studio free?
Is VAPolyPro free?
Which has better reviews, GSi Piano Studio or VAPolyPro?
Do GSi Piano Studio or VAPolyPro have ads?
Which is updated more often, GSi Piano Studio or VAPolyPro?
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