Comparison

SynthMaster One for iPhone vs Synthesizer Pro

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

Head to head
About

SynthMaster One for iPhone

This powerful wavetable synthesizer app offers an intuitive workflow for creating new sounds. It features a rich library of wavetables, inspiring factory presets, and real-time modulation feedback for sound design.

Highlights
  • Wavetable synthesis
  • 300 factory presets
  • AUv3 support
  • Files App integration
  • Real-time modulation feedback
  • Semi-modular architecture
  • 32-step arpeggiator/sequencer
Read full description

SynthMaster One for iPhone is KV331 Audio's first full blown synth app for iPhone. It's a powerful wavetable synth with an intuitive workflow. With its simple layout, rich wavetable/waveform content and inspiring factory presets library, designing new sounds with SynthMaster One for iPhone is a joy. SynthMaster One for iPhone is feature wise identical to the desktop version except the following: * 8 voice polyphony (32 for the desktop version) * Comes with 300 presets (1250 for the desktop version) FEATURES * 300 Factory Presets: SynthMaster One iOS comes with inspiring factory presets from a world class team of sound designers: Arksun, Aiyn Zahev, BigTone Studios, Brian Transeau, Bluffmunkey, Bulent Biyikoglu, Gercek Dorman, Dejavu Sound, Fragment Audio, Kurt Ader, Mirko Ruta, Nori Ubukata, Rob Lee, Ufuk Kevser, Selcuk Ergen, The Machine, Vandalism Sound, Venus Theory, Vorpalsound and Xenos Soundworks * AUv3: SynthMaster One iOS supports AudioUnits V3, allowing multiple instances to run under supporting DAW apps like GarageBand, Cubasis or Beat Maker. * Files App Integration: Easily import/export presets, waveforms or scales using the common file browser UI (requires iOS 11+). * Real-time Modulation Feedback: See in real-time how modulation sources and targets change. This is a very helpful feature when designing sounds! * Cross Platform Cloud Synchronization: Easily synchronize your SynthMaster One related data across multiple platforms (Windows, MacOS, iPad, iPhone) * Semi-Modular Architecture: For each SynthMaster One instance, there are 2 oscillators with 2 sub oscillators, 2 Filters, 4 ADSR Envelopes, 3 LFOs, a powerful 16 step arpeggiator/sequencer and also 11 different effects that can be inserted on to 6 FX insert slots. The sub oscillators can be connected to the oscillators in 5 different modes which let you use it as a regular sub oscillator or do complex modulations such as ring modulation, amplitude modulation, phase modulation or frequency modulation. * 32 Step Arpeggiator/Sequencer: The arpeggiator in SynthMaster One features classic arpeggiator modes such as Up, Down, UpDown, DownUp, UpDown2, DownUp2, AsPlayed as well as Sequence, Chord and Arpeggiate modes. * Wavetable Synthesis: SynthMaster One implements true wavetable synthesis which opens up new possibilities for sound design. It comes with a rich content library with hundreds of waveforms and wavetables. * Stereo Oscillators with up to 16 voices Unison: Each of the 2 oscillators in SynthMaster One have stereo output, and can have up to 16 voices "unison". Using the "voices", "voices mix", "detune curve", "detune spread", "pan stread", "tone spread" and "phase spread" parameters, each oscillator can generate a rich "supersaw" type sound. * Zero Delay Feedback Filters: All of the 4 filter categories in SynthMaster One are developed using the zero delay feedback filter technology. With advanced filter parameters like input gain, drive, acid, filter nonlinearities and up to 4 times oversampling you can get that "analog" sound from the filters! * Rich Set of Effects: SynthMaster One features 11 different effect types: Distortion, LoFi, Ensemble, Phaser, 6 Band EQ, Compressor, Vocoder, Delay, Chorus, Tremolo, Reverb. * Microtuning: SynthMaster One supports Scala tuning, so tuning can be set either for each preset or globally by loading from a Scala tuning file. SynthMaster One comes with 300+ scales ranging from 5 note equal tempered scales to 12 note alternate tuning scales. * Preset Browser: SynthMaster One features a comprehensive preset browser with separate search criterias for instrument type, preset attributes, music style or preset author. SUPPORTS * All 64-bit iPad devices * AUv3 Audio Unit Extensions * Note-per-channel MIDI controllers (MPE) * Ableton Link * Interapp Audio and AudioBus * Bluetooth LE MIDI Controllers * AirDrop

About

Synthesizer Pro

This music creation app offers a powerful synthesis engine, intuitive controls, and a versatile sound library for crafting unique sonic textures. Seamlessly integrate with DAWs and utilize advanced sequencing, arpeggiation, and studio-quality effects to elevate your musical compositions.

Highlights
  • Advanced synthesis engine
  • Intuitive sound shaping controls
  • Versatile sound library with presets
  • Deep DAW integration
  • Sequencing and arpeggiation tools
  • Studio-quality effects
Features
Read full description

Unlock the power of music creation with 'Synthesizer Pro' – the ultimate instrument app designed for both enthusiasts and professional musicians. Dive into a world of limitless sonic possibilities, where cutting-edge technology meets intuitive controls, and where every note becomes a masterpiece. Advanced Synthesis Engine: Explore a rich palette of sounds with our state-of-the-art synthesis engine. From classic analog tones to futuristic digital textures, 'Synthesizer Pro' puts the world of sound at your fingertips. Intuitive Controls, Endless Creativity: Craft your unique sound effortlessly with user-friendly controls and real-time tweaking. 'Synthesizer Pro' empowers you to mold and shape your music with precision, offering a seamless and inspiring creative process. Versatile Sound Library: Discover a vast collection of presets covering a spectrum of genres. Whether you're into electronic, ambient, or experimental music, 'Synthesizer Pro' provides the perfect soundscape for your artistic expression. Deep Integration with DAWs: Seamlessly integrate 'Synthesizer Pro' into your music production workflow. Connect with your favorite digital audio workstations (DAWs) and elevate your tracks with the magic of professional-grade synthesis. Powerful Sequencing and Arpeggiation: Take your compositions to new heights with robust sequencing and arpeggiation features. 'Synthesizer Pro' allows you to create intricate patterns and sequences with ease. Studio-Quality Effects: Elevate your sound with studio-quality effects including reverbs, delays, and filters. 'Synthesizer Pro' ensures that your music not only sounds professional but also evokes the emotions you desire. Secure and Stable Performance: Enjoy a stable and secure music-making experience. 'Synthesizer Pro' is designed for reliability, ensuring that your creative flow is never interrupted. Unleash your musical genius – download 'Synthesizer Pro' now and embark on a journey of sonic exploration. Whether you're a beginner or a seasoned pro, this app is your key to creating music that resonates with the world.

Screenshots

SynthMaster One for iPhone4 screens
Synthesizer Pro4 screens

Verdict

The call

The clearest difference is review sentiment: SynthMaster One for iPhone at 66% against Synthesizer Pro's 0%. SynthMaster One for iPhone also leads on rating (4.8 vs 1.0) and update cadence (every 2 months vs every 23 months). Synthesizer Pro's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement 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

Both are free to download. SynthMaster One for iPhone sells 10 one-off in-app purchases. Synthesizer Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SynthMaster One for iPhone holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: SynthMaster One for iPhone has 331 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 66% of SynthMaster One for iPhone's written reviews are positive against 0% of Synthesizer Pro's.

UpkeepUpdate frequency

SynthMaster One for iPhone ships an update every 2 months, Synthesizer Pro every 23 months. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

Scorecard6 real differences · 4 level
SynthMaster One for iPhone versus Synthesizer Pro: the parameters behind the verdict, then further details
ParameterSynthMaster One for iPhoneSynthesizer Pro
PriceFreeFree
Rating4.8 (331 ratings) — better1.0 (3 ratings)
Positive reviews66.0% of reviews — better0.0% of reviews
Number of ratings331 — better3
Update frequencyEvery 2 months — betterEvery 23 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.0 — better11.0
Further details — not scored
Size297 MB57 MB
Age rating4+17+
DeveloperKV331 AudioPT Patel

Customer experience

SynthMaster One for iPhone

All ratings331 ratings
Positive94.9%
Neutral2.1%
Negative3.0%
Written reviews50 reviews
Positive66.0%
Neutral6.0%
Negative28.0%

Synthesizer Pro

All ratings3 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

SynthMaster One for iPhone

Reported bugs

10 issues
  • App crashes when loading saved presets
  • App crashes when setting default sound
  • AUv3 option disappears in GarageBand
  • Inability to reload user patches without crashing
  • Inability to purchase certain IAP packs
Show 5 more
  • Cells don't save, revert to first synth
  • App doesn't function or open in GarageBand
  • Every note is 1 note or lower
  • GUI is cut off on iPhone SE
  • IAA not loading in FL mobile

Requested features

10 requests
  • Fix in-app purchase issues
  • Improve GarageBand AUv3 stability
  • Enable saving of custom presets
  • Address crashing when loading presets
  • Fix note pitch issues
Show 5 more
  • Ensure app is not abandonware
  • Improve UI scaling on smaller screens
  • Fix wavetable scrolling issues
  • Make IAA work properly
  • Allow recording of music

Synthesizer Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

SynthMaster One for iPhone

One-time10
  • BigTone Club Construction Set$4.99
  • True Trance Sounds Volume 1$4.99
  • Vandalism Future House$4.99
Show 7 more
  • NatLife Retrowave Sounds Vol.1$4.99
  • Demis Hellen Euphoric Trance$4.99
  • NatLife Progressive&Deep Vol.1$4.99
  • Vandalism Shocking Future Bass$4.99
  • Venus Theory Trap Sounds$4.99
  • Desktop Presets Upgrade$9.99
  • SM One Expansions Bundle$24.99
None

Synthesizer Pro

No in-app purchases

Questions

Is SynthMaster One for iPhone free?
SynthMaster One for iPhone is free to download, with in-app purchases available.
Is Synthesizer Pro free?
Synthesizer Pro is free to download, with no in-app purchases.
Which has better reviews, SynthMaster One for iPhone or Synthesizer Pro?
SynthMaster One for iPhone is rated higher. SynthMaster One for iPhone averages 4.8 out of 5 from 331 ratings, while Synthesizer Pro averages 1.0 from 3 ratings.
Do SynthMaster One for iPhone or Synthesizer Pro have ads?
Neither SynthMaster One for iPhone nor Synthesizer Pro shows ads.
Which is updated more often, SynthMaster One for iPhone or Synthesizer Pro?
SynthMaster One for iPhone ships an update every 2 months, and Synthesizer Pro every 23 months. Most recently, SynthMaster One for iPhone was updated on September 19, 2026 and Synthesizer Pro on September 9, 2026.

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