Comparison

Core Synth Free vs SynthMaster Player

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

Head to head
About

Core Synth Free

Create music with a monophonic synthesizer featuring dual oscillators, adjustable filters, and envelope shaping. Explore various wave patterns and octaves to craft unique sounds for live performance or composition.

Highlights
  • Dual overlapping oscillators
  • Four wave patterns
  • Adjustable low pass filter
  • ADSR envelope shaping
  • 1 octave keyboard
  • Save and load patches
Features
Read full description

Get your groove on with Core Synth Free, the definitive monophonic synthesizer for the iPhone and iPod touch. With tons of features packed into a small package, Core Synth is great for live performing. This free app has the following features: - 1 Octave keyboard - Keys light up in different colors when pressed Oscillator Module - Dual overlapping oscillators - Four wave patterns: Square, Triangle, Sawtooth and Reverse Sawtooth * Select from 5 octaves * Adjust glide between notes * Fine tune Oscillator 2 with option to sync with Oscillator 1 Volume Envelope Shaper - Edit ADSR (Attack, Decay, Sustain, Release) Low Pass Filter Module - Adjust Cutoff and Resonance - Edit ADSR (Attack, Decay, Sustain, Release) Upgrade to the full version within the app for the following additional features: - 7 Octave Keyboard - Octave control to move along entire range Patches Module - Save an unlimited number of individually named patches - Browse through your collection before applying patch - Delete unwanted patches - Backup patches via iTunes File Sharing Modulation Module - Four wave patterns: Square, Triangle, Sawtooth and Reverse Sawtooth - Modulate Filter, Pitch or Wave - Adjust LFO Rate and amount Arpeggiator Module - Arpeggio moves up to 5 octaves - Four step modes: Up, Down, Up/Down, Random - Adjust rate Many more exciting enhancements to follow! Core Synth Free includes open source code from MobileSynth developed by Allen Porter.

About

SynthMaster Player

This mobile synthesizer app provides a vast library of sounds for music production. It allows users to play presets, make limited edits, and access additional sound banks through in-app purchases. It integrates with other music apps and offers a built-in keyboard for immediate playability.

Highlights
  • Preset-based sound library
  • Limited parameter editing
  • XY pads for modulation
  • AUv3 and InterApp Audio support
  • Audiobus integration
  • Built-in keyboard with pitch/mod wheels
  • Scales functionality
Read full description

SynthMaster Player for iOS received "2016 Editor's Choice Award" from Electronic Musician Magazine! SynthMaster desktop version is voted as "The Best VST/AU Synth Plugin" by MusicRadar readers and also received "Gear of the Year" award from MusicTech Magazine for "Best Software Instrument" category. SynthMaster has received very positive reviews from acclaimed music technology magazines: "SynthMaster: The most powerful softsynth you may not have heard of" Keyboard Magazine "If ever there was a desert island synth, SynthMaster is it, covering all sonic bases with authority and a superb tone" Computer Music Magazine "Many developers say that they've produced the one and only synth you'll ever need, but we've always felt that was a dubious claim. In SynthMaster’s case, though, it’s one that rings true" MusicRadar INTRODUCTION SynthMaster Player for iOS is the MOBILE PLAYER VERSION of the award winning SynthMaster software synthesizer. It is targeted towards users who prefer to use presets rather than designing their own sounds during music production. Although it is a preset based player, users can edit the following preset parameters: 1) 8 easy parameters assigned by the sound designer 2) 2 XY Pads assigned by the sound designer 3) Effect bypass states and send amounts 4) Layer bypass states and volumes 5) Master volume, polyphony The free app comes with 100 factory presets. When users complete registration by entering their names and email addresses they receive another 100 factory presets as a bonus! After completing registration, users can upgrade to the Pro version of the app by purchasing the "Factory Presets" bank via In-App-Purchase (IAP). With the Pro Upgrade all of the 800 factory presets are loaded and also the following features are unlocked: 1. Users can save the changes they have made to the presets. 2. Users can purchase additional preset banks via In-App-Purchase (IAP). We currently have 28 additional preset banks that contain 1750 presets for various genres/styles. 3. Existing SynthMaster users can download their previously purchased SynthMaster preset banks inside the app, so that they don't have to purchase them again. 4. Existing SynthMaster users can export their own presets in SynthMaster v2.x and import them into SynthMaster Player for iPad using iTunes. AUv3 SynthMaster Player for iOS supports AUv3, you can add multiple instrument instances to your tracks. INTERAPP AUDIO SynthMaster Player for iOS acts as an source/instrument in InterApp Audio. We demonstrate in our user manual how to connect it to InterApp enabled DAW apps. AUDIOBUS SynthMaster Player for iOS acts as a source/instrument in AudioBus, with state saving enabled. We demonstrate in our user manual how to connect it to AudioBus enabled DAW apps. BUILT-IN KEYBOARD The built-in 2 octave keyboard with pitch and modulation wheels lets users play notes without having to connect an external MIDI controller to their iPad. With its Scale functionality, it shows the users the notes on the scale, and with its Chord functionality the user can play a certain chord by pressing a single note. MIDI SETTINGS SynthMaster Player for iOS supports CoreMIDI and also virtual MIDI. It acts as a virtual MIDI destination for other DAW apps. Midi input device, midi input channel, and receive midi beat clock settings can be adjusted from the MIDI Settings window. SYSTEM REQUIREMENTS Minimum Operating System Supported: iOS 9 Minimum Hardware Supported: iPad4, iPhone 5 and above Recommended Hardware: iPad Air and above, iPhone6 and above

Screenshots

Core Synth Free3 screens
SynthMaster Player3 screens

Verdict

The call

The clearest difference is rating: SynthMaster Player at 4.4 against Core Synth Free's 2.9. SynthMaster Player also leads on update cadence (every 3 months vs every 13 months) and ratings volume (55 vs 8). Core Synth Free's advantage is review sentiment (64% vs 52%) and iOS requirement (8.0 vs 11.0). On price, 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

Both are free to download. Core Synth Free sells 1 one-off in-app purchase and SynthMaster Player sells 13 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

SynthMaster Player holds the better App Store score, 4.4 against 2.9. That said, the two scores are not equally well evidenced: SynthMaster Player has 55 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 64% of Core Synth Free's written reviews are positive against 52% of SynthMaster Player's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Core Synth Free ships an update every 13 months, SynthMaster Player every 3 months. The most recent releases landed on June 8, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 5 level
Core Synth Free versus SynthMaster Player: the parameters behind the verdict, then further details
ParameterCore Synth FreeSynthMaster Player
PriceFreeFree
Rating2.9 (8 ratings)4.4 (55 ratings) — better
Positive reviews63.6% of reviews — better52.1% of reviews
Number of ratings855 — better
Update frequencyEvery 13 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better11.0
Further details — not scored
Size7 MB308 MB
Age rating4+4+
DeveloperCore Engine AppsKV331 Audio

Customer experience

Core Synth Free

All ratings8 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews44 reviews
Positive63.6%
Neutral4.5%
Negative31.8%

SynthMaster Player

All ratings55 ratings
Positive85.5%
Neutral5.5%
Negative9.1%
Written reviews261 reviews
Positive52.1%
Neutral16.1%
Negative31.8%

Bugs and requests

Core Synth Free

Not enough reviews yet to summarise bugs or requests.

SynthMaster Player

Reported bugs

5 issues
  • Crashes on startup
  • Purchased presets not loading
  • Stuck notes
  • Incompatibility with newer iOS versions
  • Audiobus and IAA issues

Requested features

6 requests
  • Ability to edit and create own sounds
  • Improved preset management
  • Better integration with DAWs and Audiobus
  • Background playback support
  • Larger on-screen keyboard
Show 1 more
  • More customization options

In-app purchases

1 purchases

Core Synth Free

One-time1
  • Full Version Upgrade$0.99
13 purchases

SynthMaster Player

One-time13
  • Historical Synth Giants Vol 1$1.99
  • BigTone Signature Sounds Vol1$4.99
  • MK Expansion 2$4.99
Show 10 more
  • Nori Ubukata Art Rock Basics$4.99
  • Sounds of the World$4.99
  • Factory Presets (PRO Upgrade)$4.99
  • SynthMaster 2.7 presets$4.99
  • SynthMaster 2.8 Presets$4.99
  • Extra Factory Presets Bundle$9.99
  • SynthMaster EDM Bundle 1$13.99
  • Dawn Of Electronic Bundle$13.99
  • Synth Giants Bundle$13.99
  • Rob Lee EDM Bundle$19.99

Questions

Is Core Synth Free free?
Core Synth Free is free to download, with in-app purchases available.
Is SynthMaster Player free?
SynthMaster Player is free to download, with in-app purchases available.
Which has better reviews, Core Synth Free or SynthMaster Player?
SynthMaster Player is rated higher. Core Synth Free averages 2.9 out of 5 from 8 ratings, while SynthMaster Player averages 4.4 from 55 ratings.
Do Core Synth Free or SynthMaster Player have ads?
Neither Core Synth Free nor SynthMaster Player shows ads.
Which is updated more often, Core Synth Free or SynthMaster Player?
Core Synth Free ships an update every 13 months, and SynthMaster Player every 3 months. Most recently, Core Synth Free was updated on June 8, 2026 and SynthMaster Player on September 24, 2026.

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