Mini Synthesizer vs SynthMaster 2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mini Synthesizer
This app faithfully recreates a classic analog synthesizer from the 1980s, offering vintage sounds with modern updates. It features intuitive controls for pitch, filters, and delay, allowing for extensive sound shaping and preset saving.
- Faithful analog synthesizer recreation
- Vintage and modern sound updates
- Intuitive controls with sliders and switches
- Extensive sound shaping (pitch, filters, delay, reverb)
- Preset management with unlimited user storage
- Audiobus compatibility
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Electro-Harmonix, a pioneer since 1968 in the field of sound effects pedals for musicians, has produced an app which is a faithful digital re-creation of their circa 1980 analog cult-classic, The MINI-SYNTHESIZER. Available for iPad and iPhone (IOS version 15.0 or later), the EHX MINI-SYNTHESIZER accurately delivers all the vintage synth sounds of the original plus modern updates. EHX President and Founder, Mike Matthews stated: “Fans of vintage synths will appreciate the apps ability to recreate the original’s warm analog sounds and deep funky bass, but because it’s so affordable ($2.99 for phone, $4.99 for tablet) and user-friendly, parents, educators and non-musicians will love it, too.” The MINI-SYNTHESIZER app comes with 25 presets and the ability to store an almost unlimited number of user presets programs. Audiobus capabilities are also included. Intuitive, flexible and powerful control are provided by the MINI-SYNTHESIZER’s 12 sliders and nine switches. Here’s a breakdown of the user interface: OSC Section - PITCH slider lets the player raise or lower the pitch of the note by +/- 1 octave - SUB-OCTAVE slider introduces a note one octave below what’s being played for extra bottom - OCTAVE UP switch causes the note being played to jump up one octave. - TUNE knob lets the player tune the MINI-SYNTHESIZER to other instruments and sound sources over a +/- 50 cents range. FILTERS Section - PHASE RATE slider adjusts the speed of the phase shifter - FILTER START sets the start frequency of the filter sweep - FILTER STOP sets the stop frequency of the filter sweep - SWEEP RATE controls the speed of the filter sweep - PHASE switch turns the effect on/off - 2X FILTER switch changes how the audio passes through the filters (either in parallel or in series) - Q switch sets the amount of resonance on the filter sweep - RETRIGGER switch turns the filter retrigger on/off DELAY Section - TIME slider adjusts the delay time up to two seconds - FEEDBACK controls the number of echo repeats - BLEND adjusts the mix of the original signal and the echo repeats - DELAY switch turns the effect on/off - TIME label can be tapped for tap tempo REVERB Section - AMOUNT slider adjusts the reverb effect level - BLEND slider controls the mix of the wet and dry signals - REVERB switch turns reverb on/off - REVERB>DELAY switch lets the user place either Delay or Reverb first in the effects chain for a variety of cool sound effects. MISCELLANEOUS CONTROLS - VOL (Volume) slider adjusts the MINI-SYNTHESIZER’s overall sound output level - POLY/MONO switch toggles between polyphonic (four notes can be played simultaneously) or monophonic (only one note can be played at a time) modes - PRESETS pop-down menu displays the presets available and allows the user to instantly select one - HORIZONTAL slider lets the player adjust the keyboards sounding range over an expansive eight-octave range. - RIBBON Interface lets the player perform portamento (glide up or down to pitch), vibrato and other expressive playing. The easy-to-use Electro-Harmonix MINI-SYNTHESIZER App is loaded with great sounds and features and is sure to appeal to serious musicians and non-musicians alike. LIMITATIONS - InterApp Audio experiences periodic crashes and graphics issues. - The MINI SYNTH runs at 48 kHz sample rate; using the MINI SYNTH in an environment with 44.1 kHz sample rate (such as Garageband for iOS) may cause aliasing. - Presets saved in the standalone app cannot be accessed when using the MINI SYNTH as an AudioUnit, and vice versa.
SynthMaster 2
This powerful software synthesizer offers a vast array of sound design capabilities, including multiple oscillator modes, extensive modulation options, and a wide selection of filters. Explore over 1000 factory presets or create your own unique sounds. Available as a standalone app or AUv3 plugin.
- Multiple oscillator modes (Basic, Additive, Wavetable, Vector)
- Extensive modulation architecture
- 6 filter categories
- Import custom wave files
- 1000+ factory presets
- Standalone app and AUv3 plugin
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KV331 Audio is proud to announce the availability of their award winning software synthesizer SynthMaster 2.9 on iOS platform. As being the first app developed using KV331 Audio’s new cross-platform UI framework, SynthMaster 2 runs as a standalone app or AUv3 plugin on iPads with iOS 11 and above. SynthMaster 2 supports native resolutions of various iPad devices. User interfaces are provided for 9.7, 11 and 12.9 inch iPads in 4 different skins (Blue, White, Dark, Proto). Separate interfaces are provided for the AudioUnit plugin as well. SynthMaster 2 comes with 1000 factory presets designed by world class sound designers such as BigTone, Nori Ubukata, NatLife and Yuli Yolo. Thanks to the comprehensive preset browsing features, users can easily filter presets by author name, bank name, instrument type or preset name and find the sounds that they are looking for. There’s also an IAP Shop, which lets users purchase additional sounds: 1. "Desktop Presets Upgrade": This IAP adds all factory presets in SynthMaster 2.9, increasing the total preset count to 2000. 2. "All Expansions Bundle": This IAP adds all current 38 SynthMaster preset expansion banks. Sound Engine: At the heart of SynthMaster 2’s powerful sound engine lies its oscillators, modulators, and filters. Oscillators: The oscillators can operate in 4 different modes to generate sound: 1. In Basic mode, the oscillator plays single cycle waveforms or samples. With the Oscillator Unison turned on, up to 8 voices per oscillator can be played. 2. In Additive mode, 8 Basic oscillators can be stacked up to create richer tones. 3. In Wavetable mode, the oscillator can play wavetables with up to 256 frames. 4. In Vector mode, 4 Basic oscillators are mixed in 2 dimensions. Modulators: Modulators are simply basic oscillators that can be added to other oscillators or modulate other oscillators’ or modulators’ phases. By connecting modulators to other oscillators or modulators, complex FM tones can be synthesized. Importing Wave Files into SynthMaster: While designing sounds, users can easily import wave files into SynthMaster 2. SynthMaster 2 can categorize those files into waveforms, wavetables or multi samples and import them accordingly. Filters: Once the sound is generated by the oscillators it goes through SynthMaster’s filters, which can operate in 6 different categories: Digital, VAnalog, Ladder, Diode Ladder, State Variable and Bite. Custom distortion can be applied before or after the filters as well. Modulation Architecture: SynthMaster 2 features a comprehensive modulation architecture with a wide range of modulation sources: 1. MIDI controls 2. Macros controls 3. 4 ADSR envelopes per layer 4. 4 Multisegmented envelopes per payer 5. 4 LFOs per layer 6. 4 Sequencers per layer 7. 4 Keyscalers per layer There’s real-time visual feedback that lets users see how modulation sources and targets are changing when a note is being played. This is extremely helpful when designing sounds with SynthMaster 2. New modulations can be created easily by dragging and dropping a modulation source onto a knob or slider control. Users can easily see which controls are modulated by a modulation source by clicking on that source. Controls that are being modulated by that source will display modulation amounts. By long pressing a control, the modulation amount can be edited without the need to go through the mod matrix. Arp/Sequencer: SynthMaster features a comprehensive arpeggiator / sequencer with 32 steps. Users can easily create sequences by recording steps one by one. Effects: Each of the 2 layers in SynthMaster has 5 insert effect slots. 13 different types of effects can be instantiated in any of those slots. There are also 2 global effect send busses which can be used to create more complex effect routings.
Verdict
The clearest difference is price: Mini Synthesizer at $4.99 against SynthMaster 2's $14.99. Mini Synthesizer also leads on in-app purchases (none vs 32) and ads (none vs shown). SynthMaster 2's advantage is rating (4.8 vs 3.5) and update cadence (every 3 weeks vs every 4 months). On device support 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
Mini Synthesizer costs $4.99 and SynthMaster 2 $14.99 up front. SynthMaster 2 sells 32 one-off in-app purchases. Mini Synthesizer asks for nothing beyond the download.
SynthMaster 2 holds the better App Store score, 4.8 against 3.5. That said, the two scores are not equally well evidenced: SynthMaster 2 has 451 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 44% of Mini Synthesizer's written reviews are positive against 68% of SynthMaster 2's.
Mini Synthesizer ships an update every 4 months, SynthMaster 2 every 3 weeks. Both last shipped on October 14, 2026.
| Parameter | Mini Synthesizer | SynthMaster 2 |
|---|---|---|
| Price | $4.99 — better | $14.99 |
| Rating | 3.5 (12 ratings) | 4.8 (451 ratings) — better |
| Positive reviews | 44.1% of reviews | 68.5% of reviews — better |
| Number of ratings | 12 | 451 — better |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPad |
| Requires iOS | 13.0 — better | 15 |
| Further details — not scored | ||
| Size | 12 MB | 918 MB |
| Age rating | 4+ | 4+ |
| Developer | Electro-Harmonix | KV331 Audio |
Customer experience
Mini Synthesizer
SynthMaster 2
Bugs and requests
Mini Synthesizer
Not enough reviews yet to summarise bugs or requests.
SynthMaster 2
Reported bugs
4 issues- Presets not loading correctly
- Modulation not working after loading project
- Skin resets to default
- App crashes frequently
Requested features
2 requests- Pitch bend/glide for imported samples
- Integration with AUM audio mixer
In-app purchases
Mini Synthesizer
No in-app purchases
SynthMaster 2
- BigTone Tableworks Vol.2$1.99
- Burak Yeter Synth Sounds Vol1$1.99
- Aiyn Zahev Expansion 1$1.99
Show 29 moreShow fewer
- BigTone Tableworks Vol.1$1.99
- Michael Kastrup Expansion$1.99
- EDM Stars Volume 1$1.99
- Nori Ubukata Pop Hits Vol.4$1.99
- Rob Lee EDM Expansion Vol.2$1.99
- Alonso Sound Future Rave$1.99
- Nori Ubukata Pop Hits Vol.1$1.99
- BigTone Techno Bits Vol.1$1.99
- Club Sequences Vol.1$2.99
- Historical Synth Giants Vol.3$2.99
- Dawn of Electronic Music Vol.2$2.99
- Nori Ubukata Art Rock Basics$2.99
- BigTone Analog Basics 02$4.99
- BigTone Analog Basics$4.99
- BigTone Signature Sounds Vol.1$4.99
- NU Sounds of the World$4.99
- Historical Synth Giants Vol.4$4.99
- Historical Synth Giants Vol.1$4.99
- Historical Synth Giants Vol.2$4.99
- Japan Vintage$4.99
- NatLife Future Bass Sounds$4.99
- Danyella EDM Expansion Vol.1$4.99
- Dawn of Electronic Music Vol.1$4.99
- Dawn of Electronic Music Vol.3$4.99
- Rob Lee EDM Expansion Vol.3$4.99
- Natlife Disco Funk$4.99
- Insigne Essentials 4 Clubbin$4.99
- Desktop Presets Upgrade$9.99
- All Expansions Bundle$49.99
Questions
Is Mini Synthesizer free?
Is SynthMaster 2 free?
Which has better reviews, Mini Synthesizer or SynthMaster 2?
Do Mini Synthesizer or SynthMaster 2 have ads?
Which is updated more often, Mini Synthesizer or SynthMaster 2?
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