Comparison

VAPolyTZFM vs Oscidia

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

Head to head
About

VAPolyTZFM

This app is a polyphonic synthesizer that utilizes Through Zero FM for musical sound generation. It offers a standalone mode with Ableton Link and MIDI support, as well as an AudioUnit Extension for use with other music software. Built-in effects and iCloud Drive integration enhance its creative capabilities.

Highlights
  • Through Zero FM synthesis
  • AudioUnit Extension (AUv3) support
  • Ableton Link and MIDI connectivity
  • Built-in effects suite
  • iCloud Drive project sharing
  • Analog style step sequencer
  • Up to 8 voice polyphony
Features
Read full description

VAPolyTZFM is polyphonic synthesizer featuring Through Zero FM, which is a type of linear frequency modulation and it is capable to maintain the pitch therefore it can deliver more musical results. VAPolyTZFM 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 Through Zero FM Analog Style Step Sequencer. Eight Assignable Controllers. 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 Foot Pedal and Per Note Control. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Include 256 Factory Presets. Improvements Support MIDI Foot Pedal (CC#11, CC#64) Support MIDI2.0 Per Note Control Messages MIDI CC Settings are saved. It will be recovered when the app launched in the next time. System Requirements iOS 17.0 or later Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended. if sound is distorted when using a device with less CPU power, reduce number of voices. 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.

About

Oscidia

This powerful synthesizer app allows iOS users to create a vast array of sounds using multiple oscillators, wavetable synthesis, and advanced modulation options. It features a versatile sequencer with independent arpeggiators and built-in effects for complex sound design.

Highlights
  • 3 Oscillators Per Voice
  • Wavetable & Additive Synthesis
  • Morphing & Warping Wavetables
  • 5 Morphable Filter Types
  • 3 Independent Arpeggiators
  • Mod Matrix
  • Internal Effects Suite
Features
Read full description

Oscidia is an AUv3 plugin for iOS which can be loaded into your favorite DAW allowing you to use it as a sound source for any MIDI source. Its wide range of features and oscillator types allow it to produce a vast variety of sounds. In particular, the inclusion of WaveTable greatly expands the traditional wave types and brings a wealth of modulation options. Oscidia has 3 oscillators per voice, and each oscillator can be a different wavetable – all working and morphing together to create some incredibly amazing sounds. Oscidia includes SINE, SAW, SQUARE, TRIANGLE, SUPERSAW, SUPERSQUARE, WAVETABLE and ADDITIVE wave types. You can import and export compatible wavetables using drag and drop directly to the WaveTable manager. Wavetables support morphing and warping (phase distortion), all controlled by the Mod Matrix routing. The SINE and TRIANGLE wave types both support several wave folding modes which allow dramatic real-time morphing too. Oscidia also supports 5 filter types which support 12/24dB modes and morphable LP/BP/HP filter modes which can be automated from the Mod Matrix or via the Sequencer. The sequencer itself is very unique and allows up to 3 simultaneous ARPs to play at the same time. Each ARP can directly control the 3 oscillator levels independently per step, as well as the pitch, filter morph, cutoff frequency, probability, gate, note repeat and ties. This allows for some really complex rhythms to be created that are not tied to pitch. Oscidia Features: • 3 Oscillators Per Voice. • Support for Wavetable and Additive synthesis. • WaveTable supports Morph and Warp (Phase Distortion) features. • 4 LFOs Per Voice. • 5 Filter types with 12/24-bit slopes and morphable LP/BP/HP. • 4 ADSR (Attack, Decay, Sustain, Release ) or FEG (Fluid Envelope Generators). • Wave Folding is available for basic waveforms such as SINE and TRIANGLE. • OSC Sync. • XMod & Ring Mod (on osc1 & osc2). • Additive Synthesis for glass, metallic and bell like tones. • Build in Sequencer (with 3 independent ARPs). • Mod Matrix. • MPE Mode. • Internal Effects - reverb, delay, chorus, Haas, and Phaser effects. • Drag and Drop for import and export presets and wavetables. • Build in Help Manual.

Screenshots

VAPolyTZFM4 screens
Oscidia4 screens

Verdict

The call

The clearest difference is price: VAPolyTZFM at $5.99 against Oscidia's $14.99. Oscidia's advantage is review sentiment (88% vs 50%) and update cadence (monthly vs every 9 months). On rating, ads, in-app purchases and monetization model 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

VAPolyTZFM costs $5.99 and Oscidia $14.99 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 VAPolyTZFM against 5.0 for Oscidia. Both are backed by a comparable volume of ratings — 3 and 11 respectively. Written reviews are what separate them: 50% of VAPolyTZFM's written reviews are positive against 88% of Oscidia's.

UpkeepUpdate frequency

VAPolyTZFM ships an update every 9 months, Oscidia monthly. The most recent releases landed on September 6, 2026 and September 21, 2026 respectively.

Scorecard5 real differences · 5 level
VAPolyTZFM versus Oscidia: the parameters behind the verdict, then further details
ParameterVAPolyTZFMOscidia
Price$5.99 — better$14.99
Rating5.0 (3 ratings)5.0 (11 ratings)
Positive reviews50.0% of reviews87.5% of reviews — better
Number of ratings311 — better
Update frequencyEvery 9 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.613 — better
Further details — not scored
Size17 MB168 MB
Age rating4+4+
DeveloperRyo Togawa4Pockets.com

Customer experience

VAPolyTZFM

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Oscidia

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive87.5%
Neutral12.5%
Negative0.0%

In-app purchases

None

VAPolyTZFM

No in-app purchases

None

Oscidia

No in-app purchases

Questions

Is VAPolyTZFM free?
VAPolyTZFM costs $5.99, with no in-app purchases.
Is Oscidia free?
Oscidia costs $14.99, with no in-app purchases.
Which has better reviews, VAPolyTZFM or Oscidia?
VAPolyTZFM and Oscidia are both rated 5.0 out of 5 on the App Store, from 3 and 11 ratings respectively.
Do VAPolyTZFM or Oscidia have ads?
Neither VAPolyTZFM nor Oscidia shows ads.
Which is updated more often, VAPolyTZFM or Oscidia?
VAPolyTZFM ships an update every 9 months, and Oscidia monthly. Most recently, VAPolyTZFM was updated on September 6, 2026 and Oscidia on September 21, 2026.

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