Comparison

Groovebox vs SynthMaster One for iPhone

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

Head to head
About

Groovebox

Create electronic music with this mobile studio app. Features inspiring synths, drum machines, and world-class instruments. Easily build beats, melodies, and arrange tracks for production.

Highlights
  • Beat and synth music studio
  • Touchable instruments for melodies and beats
  • Five powerful instruments: Drumbox, Horizon, MiniMon, RetroBass, Poly-8
  • Arrange tracks with sections
  • Record synth parameters as automation
  • Ableton Link and Ableton Export for collaboration
  • Expandable instruments and sound packs
Features
Read full description

If you love making electronic music, you’ll love Groovebox. Enter an inspiring world of music production on your iPhone & iPad. Groovebox is a free, beautifully designed music studio app packed with inspiring synths and drum machines. In minutes you’ll be making beats, melodies, and playing with world-class instruments. Expand your own collection with more sounds and instruments available in the store. From the creators of Launchpad, Groovebox helps you produce music on iPhone & iPad. • A BEATS & SYNTH MUSIC STUDIO Play with touchable instruments to quickly create your own beats and melodies, or draw in notes. Need inspiration? Groovebox has hundreds of patterns and sounds to get you started. Four powerful synthesisers, designed in partnership with Novation, deliver deep retro basslines and analogue harmonic melodies. The modern drum machine, with expanding drumkit library, will turn Groovebox into your go-to beat production studio. • SYNTHS DESIGNED WITH NOVATION Designed in partnership with Novation, legendary synth pioneers, Groovebox packs a world-class sound. Each instrument uses a new powerful synth engine capable of recreating classic warm analogue sounds and rich modern harmonics. • EASY TO START, DEEP ENOUGH TO MASTER Groovebox is designed to kick-start ideas, but it has serious features for artists and producers too. The advanced synth parameters* let you sculpt your own sounds. Automate the parameters over time to create a vibrant dynamics. Control your sound with the multi-channel mixer (iPad only), note sequencer, key and scale modes. Build your arrangements into songs with sections. Export your sounds easily to a laptop for further production. Sync to other apps or a laptop with Ableton Link. Connect using Audiobus, Inter-App Audio and even Export to Ableton Live seamlessly.   FEATURES • Discover and build ideas - Quickly explore sounds with hundreds of melody and rhythm patterns • Play touchable instruments - Create your own melodies and beats • Five powerful instruments - Drumbox, Horizon, MiniMon, RetroBass and Poly-8 • Build beats - Play drum pads or keys, sequence notes or use patterns • Arrange your tracks - Simple song-building using sections • Create dynamic changes - Record synth parameters as automation • Sound innovation - Instruments developed in partnership with synth pioneers Novation • Expand your sounds - Regular, fresh-content drumpacks, presets and patterns* • Production-ready sounds - Crafted by world-class sound designers and artists • Extendable Instruments - Expose more tweakable synth controls • Sequence your music - Draw notes and build patterns instead of playing them • Stay in time and key - Choose from any tempo, key or musical scale • Share your music - Easily create a mix of your music to share with others *Requires In-App Purchase ADVANCED FEATURES • Jam with others - Audiobus, Inter-App Audio, Ableton Link and Ableton Export • Swing - Instantly add swing to your session. • Ableton Export - Easily send your project to Ableton Live • Full scale support - All keys and major, minor and modes supported • Project management - Rename, duplicate and delete • iPad Pro support - Optimised to use the entire iPad Pro screen • Send your ideas to a laptop - Batch export your pads as a .zip file, or use Ableton Export • Bluetooth speaker supported

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

Screenshots

Groovebox4 screens
SynthMaster One for iPhone4 screens

Verdict

The call

The clearest difference is ratings volume: Groovebox at 4.7K against SynthMaster One for iPhone's 331. Groovebox also leads on review sentiment (79% vs 66%). SynthMaster One for iPhone's advantage is iOS requirement (10.0 vs 15.0). On price, rating, update cadence and ads 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. Groovebox sells 10 one-off in-app purchases and SynthMaster One for iPhone sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Groovebox against 4.8 for SynthMaster One for iPhone. That said, the two scores are not equally well evidenced: Groovebox has 4.7K ratings behind it against 331, so its average is the more settled of the two. Written reviews are what separate them: 79% of Groovebox's written reviews are positive against 66% of SynthMaster One for iPhone's.

UpkeepUpdate frequency

Groovebox ships an update every 6 weeks, SynthMaster One for iPhone every 2 months. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 7 level
Groovebox versus SynthMaster One for iPhone: the parameters behind the verdict, then further details
ParameterGrooveboxSynthMaster One for iPhone
PriceFreeFree
Rating4.7 (4.7K ratings)4.8 (331 ratings) — better
Positive reviews79.2% of reviews — better66.0% of reviews
Number of ratings4.7K — better331
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.010.0 — better
Further details — not scored
Size44 MB297 MB
Age rating4+4+
DeveloperFocusrite Audio EngineeringKV331 Audio

Customer experience

Groovebox

All ratings4,735 ratings
Positive94.3%
Neutral3.3%
Negative2.5%
Written reviews653 reviews
Positive79.2%
Neutral10.4%
Negative10.4%

SynthMaster One for iPhone

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

User reviews

Groovebox

From 4.7K App Store ratings

What we love

  • 🚀 Refreshing simplicity
  • 🚀 Intuitive and easy to use
  • 🚀 Excellent sound quality
  • 🚀 Flexible and powerful
  • 🚀 Inspiring and creative

Room to improve

  • 🐛 Buggy and crashes occasionally
  • 🔒 No iCloud sync or cloud backup
  • 🔒 Limited export options
  • 🔒 Lack of MIDI support
  • 🔒 Clunky piano roll and note editing

SynthMaster One for iPhone

From 331 App Store ratings

What we love

  • ✨ Excellent sound quality
  • 🤩 Incredible features for free
  • 👍 Easy to use interface
  • 🎛️ Versatile sound design capabilities
  • 🎵 Great for GarageBand integration

Room to improve

  • 🐛 Frequent crashes
  • 🔌 Issues with GarageBand integration
  • 💸 In-app purchase problems
  • 🔄 Presets not saving
  • 📉 App appears abandoned

Bugs and requests

Groovebox

Reported bugs

4 issues
  • Crashes when exporting projects
  • Playback issues with certain patterns
  • Disappearing UI elements when scrolling
  • Inconsistent behavior when changing sections

Requested features

6 requests
  • Add song mode and ability to chain sections
  • Improve piano roll and note editing
  • Implement MIDI support and mapping
  • Add more export options like MIDI and multi-track
  • Implement iCloud sync and cloud backup
Show 1 more
  • Add panning and more advanced mixing features

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

In-app purchases

10 purchases

Groovebox

One-time10
  • Trap BassFree
  • Sequential ArpsFree
  • Ambient Hip HopFree
Show 7 more
  • Dirty 909Free
  • Hip Hop OrbitFree
  • Hypnotic BassFree
  • Golden Era Bass$0.99
  • Neuro Leads$0.99
  • Composed Melodics$0.99
  • Drum Booster$1.99
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

Questions

Is Groovebox free?
Groovebox is free to download, with in-app purchases available.
Is SynthMaster One for iPhone free?
SynthMaster One for iPhone is free to download, with in-app purchases available.
Which has better reviews, Groovebox or SynthMaster One for iPhone?
SynthMaster One for iPhone is rated higher. Groovebox averages 4.7 out of 5 from 4.7K ratings, while SynthMaster One for iPhone averages 4.8 from 331 ratings.
Do Groovebox or SynthMaster One for iPhone have ads?
Neither Groovebox nor SynthMaster One for iPhone shows ads.
Which is updated more often, Groovebox or SynthMaster One for iPhone?
Groovebox ships an update every 6 weeks, and SynthMaster One for iPhone every 2 months. Most recently, Groovebox was updated on September 22, 2026 and SynthMaster One for iPhone on September 19, 2026.

Other comparisons