Comparison

iSyn Poly vs Sunrizer synth

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

Head to head
About

iSyn Poly

Create electronic music with three virtual analog synthesizers and a drum machine. Features a full sequencer for arranging songs and live editing capabilities. Supports external MIDI keyboards for enhanced control.

Highlights
  • Three programmable virtual analog synthesizers
  • Sample playback drum machine with 17 kits
  • Full-featured four-track sequencer
  • Gesture-oriented user interface for live editing
  • Support for CoreMIDI compatible hardware keyboards
  • Global effects unit with phaser, flanger, chorus, and delay
Read full description

iSyn Poly is an electronic music studio for use with Apple iPad. iSyn Poly places an unbelievable number of features including three studio-quality, fully programmable virtual analog synthesizers and a drum machine packed in just three different screens on your iPad ! Each synthesizer is a full-featured analog modeling synth with three oscillators, a classic 24 db/oct ladder-style lowpass filter, independent filter and amp envelope generators, and full modulation routings. With our 10+ years of experience with analog simulations you can expect some serious sound easily covering all those fat frequencies so prevalent in modern production. iSyn Poly also includes a sample playback-based drum machine with seventeen kits, each containing eight samples. Drum samples include 808, 909, modular synth drums and numerous 80's drum machines. Volume, pan and decay time are individually adjustable and pitches are tunable over a wide range for crazy effects. The full fledged sequencer let you arrange complete songs and can record the notes and controller movements of your performance. The unique gesture oriented user interface makes it ideal for live editing of notes and automations. With the Apple iPad Camera Connection Kit you can use a CoreMIDI compatible MIDI Keyboard to control iSyn Poly. iSyn Poly is developed by VirSyn with content from audioMIDI.com. Features: Three Independent Synthesizers One polyphonic synth with eight voices and two monophonic synths with: • Three oscillators with sawtooth, pulse, triangle and sine waves. Modulations routings: LFO->pitch, filter ADSR->cutoff, LFO->pulse width. • White/Pink noise generator. • Classic 24 dB/oct  ladder-style lowpass filter with drive parameter. Modulations routings:  LFO->Cutoff, Filter ADSR->Cutoff. • Amp section includes distortion with drive, asymmetry and crusher. • Control matrix allows real time control of five parameters using the X/Y touch pad, the modulation wheel and the tilt sensors of the iPad.  • Arpeggiator for automated sequences.  • 64 factory presets, unlimited user presets can be shared.  Drum Machine • Eight simultaneous instruments arranged into eight user-selectable drum kits. • Editor page allows tuning, panning, level and decay time for individual instruments. Effects Section • iSyn Poly features one global effects unit with phaser, flanger, chorus and stereo/cross delay. Live  • Play melodies live with onscreen keyboard/drum pads. Drag fingers for slides and vibrato.  • Optionally use CoreMIDI compatible hardware keyboard.  Full featured Sequencer • Four track sequencer with piano roll and automation editor.  • Real time recording with quantize function and metronome. • Arrange your songs with variable length patterns. Move and copy/paste patterns. • Recording and playback of X/Y Pad movements, mod wheel, pitch bend and key velocity. • Full set of editing functions with unlimited undo. Global • Manage unlimited number of songs. • Render song or patterns to audio and midi files. • Audio pasteboard. • Audiobus 2 support (requires iOS 7 or newer). • Exchange songs and user presets with File Sharing in iTunes.

About

Sunrizer synth

This virtual analog synthesizer offers a rich, warm sound with advanced features like SuperSaw emulation and morphing parameter control. It integrates seamlessly with MIDI hardware and sequencers, providing a professional-grade sound design experience on iOS.

Highlights
  • SuperSaw sound emulation
  • Dual filters with configurable routing
  • Morph Group for parameter control
  • CoreMidi and background audio support
  • Multi-mode oscillator multiplication
  • Microtuning support
Features
Read full description

"This really is the synth that keeps on giving! Inspiration and intuition truly blend together in this musical instrument." Alan Parsons Sunrizer Synth is a virtual analog synthesizer that takes the definition of iOS synthesizer to the next level. Thanks to carefully designed architecture and heavy usage of coprocessor it blurs the boundaries between iOS and hardware synthesizers. Sunrizer was built to perform and works perfectly with any MIDI keyboard or sequencer. A lot of research has been done in order to achieve unique character, warmth and clarity. HIGHLIGHTS · True SuperSaw sound emulation, first found in the legendary Roland JP-8000 synthesizer. SuperSaw is a layered waveform consisting of multiple saw waves which are detuned to create an extremely full and epic sound. · Two filters per voice with configurable routing. 16 filter types available, including less common like Comb, Formant or Frequency shifter. · The Morph Group function lets you continuously morph of up to 30 parameters in a sound (including effects), using only the modulation wheel. · Full support for CoreMidi, MIDI mapping, Virtual Midi Ports and background audio. · Multi mode lets you multiply oscillators to get unbelievably fat and full sound. · Support for microtuning - load scl and tun files. Create fascinating microtonal music which uses intervals not found in the Western system of 12 equal intervals to the octave. OSCILLATORS · 2 warm-sounding analog modelled oscillators, 2 sub-oscillators (except SuperSaw). Available waveforms: Saw, PWM pulse,Triangle, SuperSaw, FM (frequency of phase modulation). 6 oscillators per voice in multi-sono mode. · Oscillator 2 hard-sync and configurable routing · FM (true frequency modulation) and PM mode · Osc-mix, ring modulator · White noise oscillator FLEXIBLE MULTI FILTERS · Two independent filters per voice with configurable routing. Filter types: LPF, HPF, BPF, Analog LPF, Notch, Comb, All pass, Power LPF, Power BPF, Wave shaper, Resonator, Resampler, LPF+Resampler, Frequency shifter. · Configurable routing: serial or parallel with bypass option. · ADSR envelope, keyboard tracking and full LFO control. MODULATION · Two LFOs per voice. It's possible to assign each LFO to almost any parameter. 3 LFO running modes: trigger, 1 shot, global. 6 waveforms, phase and fade-in knobs. · The Morph Group function lets you continuously morph of up to 30 parameters in a sound (including effects), using only the modulation wheel. · Two Modulation ADSR Envelopes for amplitude and filters cutoff. · Pitch and modulation wheels. EFFECTS · A number of effects are built in: distortion, hi-q reverb, chorus, rotary speaker simulation, equalizer, phaser and stereo delay. Dual-band FX processing. ARPEGGIATOR · Sunrizer incorporates very powerful programmable arpeggiator. You should think of it more like a small step sequencer. OTHER FEATURES · Over 380 presets, 7 additional banks available for FREE in web library (more coming soon) · Hold button allows you to to keep notes sustaining until you play new notes · With Chord Memory function you can play the chord by only pressing single keys · Phrase sequencer · Compatible with AudioBus · Adjustable polyphony: 6-20 voices · Playback modes: poly, solo, arp · Built-in recorder supporting AudioCopy, DropBox and iTunes file sharing. · Supports AUv3, MIDI, IAA, AudioBus 2.0 Visit www.beepstreet.com for user manual and audio demos. * Sunrizer is now available on Mac and PC, check our website for more info "Specs aside, the most important thing is the sound… and it’s great." musicradar.com "Sunrizer is the first truly mature polyphonic synth for the iPad, a real, smooth and powerful sounding option for all sorts of stage and studio performances." Mark Jenkins, author "Analog Synthesizers"

Screenshots

Sunrizer synth3 screens

Verdict

The call

The clearest difference is price: iSyn Poly at $0.99 against Sunrizer synth's $12.99. iSyn Poly also leads on iOS requirement (8.0 vs 10.3). Sunrizer synth's advantage is rating (4.7 vs 4.3) and review sentiment (88% vs 64%). On update cadence, 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

iSyn Poly costs $0.99 and Sunrizer synth $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Sunrizer synth holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Sunrizer synth has 183 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 64% of iSyn Poly's written reviews are positive against 88% of Sunrizer synth's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on September 25, 2026 and October 13, 2026 respectively.

Scorecard6 real differences · 4 level
iSyn Poly versus Sunrizer synth: the parameters behind the verdict, then further details
ParameteriSyn PolySunrizer synth
Price$0.99 — better$12.99
Rating4.3 (4 ratings)4.7 (183 ratings) — better
Positive reviews64.0% of reviews87.8% of reviews — better
Number of ratings4183 — better
Update frequencyEvery 6 monthsEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS8.0 — better10.3
Further details — not scored
Size19 MB28 MB
Age rating4+4+
DeveloperHarry GohsBeepStreet

Customer experience

iSyn Poly

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews25 reviews
Positive64.0%
Neutral20.0%
Negative16.0%

Sunrizer synth

All ratings183 ratings
Positive90.2%
Neutral5.5%
Negative4.4%
Written reviews303 reviews
Positive87.8%
Neutral5.3%
Negative6.9%

Bugs and requests

iSyn Poly

Not enough reviews yet to summarise bugs or requests.

Sunrizer synth

Reported bugs

3 issues
  • Synth freezes when loading certain presets
  • Inconsistent behavior when using multiple instances
  • Graphical issues on newer iPad models

Requested features

4 requests
  • Improved MIDI integration and control
  • Expanded arpeggiator and sequencing capabilities
  • More advanced sound design tools
  • Ability to save custom tunings

In-app purchases

None

iSyn Poly

No in-app purchases

None

Sunrizer synth

No in-app purchases

Questions

Is iSyn Poly free?
iSyn Poly costs $0.99, with no in-app purchases.
Is Sunrizer synth free?
Sunrizer synth costs $12.99, with no in-app purchases.
Which has better reviews, iSyn Poly or Sunrizer synth?
Sunrizer synth is rated higher. iSyn Poly averages 4.3 out of 5 from 4 ratings, while Sunrizer synth averages 4.7 from 183 ratings.
Do iSyn Poly or Sunrizer synth have ads?
Neither iSyn Poly nor Sunrizer synth shows ads.
Which is updated more often, iSyn Poly or Sunrizer synth?
iSyn Poly ships an update every 6 months, and Sunrizer synth every 6 months. Most recently, iSyn Poly was updated on September 25, 2026 and Sunrizer synth on October 13, 2026.

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