Comparison

VU950 FX vs VAPolyPro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VU950 FX

This audio effect plugin emulates classic sampler tones with 12-bit DSP. It offers sample-rate reduction, input drive, and an adjustable anti-aliasing filter to shape your sound. Perfect for adding gritty character to your music productions.

Highlights
  • 12-bit DSP model
  • Sample-rate reduction
  • Input drive
  • Adjustable anti-aliasing filter
  • Bass and presence coloration
  • Noise generation
Features
Read full description

VU950 FX is an AUv3 effect plug-in built around a gritty 12-bit DSP model, designed to bring classic sampler-style tone shaping directly into your iOS music host. At its core, VU950 FX combines sample-rate reduction, 12-bit DAC character, input drive, bass and presence coloration, noise, and an anti-aliasing filter that naturally closes as the sample rate goes down. You can keep that authentic behavior, or edit the AA Filter manually to fine-tune how dark, crunchy, clean, or aliased the sound becomes. Use RATE to set the modeled sample rate, from cleaner high-bandwidth processing to darker low-rate texture. Use FILTER to shape the main tone filter from wide open to heavily rolled off. Use CHANNELS to choose whether the left or right input channel becomes the focused mono source. The jog wheel edits the active RATE or FILTER page. ON/+ and OFF/- switch the selected channel when CHANNELS mode is active. The top knobs give you direct control over AA Filter, Input Drive, and Output Gain, so you can push the DSP model harder, tame the final level, or dial in just the right amount of anti-aliasing response. VU950 FX is made for fast AUv3 workflows: load it in your favorite compatible host, automate the parameters, and turn clean audio into controlled 12-bit character in seconds.

About

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.

Highlights
  • Multiple VCO and VCF types
  • Stereo VCF and VCA
  • MPE support
  • Built-in effects
  • Step sequencer
  • Audio Unit Extension (AUv3)
  • iCloud Drive project sharing
Features
Read full description

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

VU950 FX3 screens
VAPolyPro4 screens

Verdict

The call

The clearest difference is price: VU950 FX at $2.99 against VAPolyPro's $19.99. VAPolyPro's advantage is update cadence (every 2 days vs every 3 weeks). On rating, review sentiment, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

VU950 FX costs $2.99 and VAPolyPro $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for VU950 FX against 5.0 for VAPolyPro. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

VU950 FX ships an update every 3 weeks, VAPolyPro every 2 days. Both last shipped on November 6, 2026.

Scorecard2 real differences · 8 level
VU950 FX versus VAPolyPro: the parameters behind the verdict, then further details
ParameterVU950 FXVAPolyPro
Price$2.99 — better$19.99
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings22
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better16.6
Further details — not scored
Size20 MB22 MB
Age rating4+4+
DeveloperDariusz ChynekRyo Togawa

Customer experience

VU950 FX

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

VAPolyPro

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

VU950 FX

No in-app purchases

None

VAPolyPro

No in-app purchases

Questions

Is VU950 FX free?
VU950 FX costs $2.99, with no in-app purchases.
Is VAPolyPro free?
VAPolyPro costs $19.99, with no in-app purchases.
Which has better reviews, VU950 FX or VAPolyPro?
VU950 FX and VAPolyPro are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do VU950 FX or VAPolyPro have ads?
Neither VU950 FX nor VAPolyPro shows ads.
Which is updated more often, VU950 FX or VAPolyPro?
VU950 FX ships an update every 3 weeks, and VAPolyPro every 2 days. Most recently, VU950 FX was updated on November 6, 2026 and VAPolyPro on November 6, 2026.

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