Comparison

AudioKit Hey Metronome vs SynthMaster 2

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

Head to head
About

AudioKit Hey Metronome

Practice music hands-free with voice commands. Control tempo, beat patterns, and songs without touching your device. Features professional drum sounds and customizable themes for an engaging practice experience.

Highlights
  • Voice control for play, stop, and tempo
  • Professional drum and beat sounds
  • Customizable themes and backgrounds
  • 100+ subdivision and accent combinations
  • Setlist and song management
  • Ableton Link integration
Features
Read full description

Practicing becomes fun again! Whether your passion is guitar, brass, piano, strings, drums, woodwind, voice, dance, band – Hey Metronome is for YOU! “Hey Metronome app could change the way you practice.” – Music Radar "A must-have” – Create Digital Music “Hey Metronome is top-notch.” – Synth Anatomy "Best New Apps!" – Cult of Mac “It's got the groove, I like this!” – Roger Linn (Grammy-winnner, Music Tech Legend) “I can keep my hands on my violin, this is GREAT!” – Shen Yeh, San Francisco Philharmonic Orchestra // Played with Metallica & Megadeath • Fun and professional, yet simple enough for kids • Ditch the Click: Drum sounds by pro sound designers • Use your voice to play, stop, set the tempo, and more • Includes over a dozen themes. You can create your own themes. • Choose from 100+ subdivision & accent combinations • Use Ableton Link to control tempo in your favorite apps “Hey Metronome allows you to play and practice hands-free using voice commands. Effortless play and productivity—all without touching a device.” – KVR Audio Violinists never have to take their hands off their bow. Guitarists can keep their hands on their strings. This is magical. IT SOUNDS SO GOOD YOU’LL FORGET IT’S A METRONOME “You’ll experience drum beats, classic booming drum machines, and sounds designed to inspire and limit ear fatigue.” – KVR Audio • Full Setlist & Song system. Change songs hands free • Pick your time signatures, or through voice commands • Friendly and encouraging: upbeat motivational messages • Keep your hands on your instrument while you practice • Customize the background with family, pets, or band pics With Hey Metronome, you can put your earbuds on and control everything with your voice, from tempo and meter, to beat patterns, to even what song you are practicing. Just say, “Hey metronome set the tempo to 120,” “Hey metronome, shuffle,” or “Hey Metronome, next song,” and you’re off. GREAT FOR BANDS! "This is by far my favorite metronome app! Store tempos for songs and write setlists (drag & drop). It even responds to your voice! So many options, all easy!” – Ryan Chrys, award-winning guitar player / touring band leader “Hey Metronome impressed the heck out of me!” – Tim Webb, editor of Discchord Plus, you're supporting open-source and music education! • 100% of proceeds from this app go to support the AudioKit open-source project • Open Source: Metronome app source code will be released • No Internet required for Voice Control • Practice in airplane mode. Complete data privacy! “Hey Metronome: Now you can get hands-free metronome features while you practice and play – without worrying about privacy or needing signal” – Create Digital Music Please note that we all are volunteers. AudioKit does not have any sponsors or investors. We are all musician/developers who love making apps. Want to see Hey Metronome in action? Visit our website: http://audiokitpro.com/hey-metronome/ For friendly conversation about Hey Metronome, ideas, or to say hello, please email aure@audiokitpro.com

About

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.

Highlights
  • 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
Read full description

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.

Screenshots

AudioKit Hey Metronome4 screens

Verdict

The call

The clearest difference is price: AudioKit Hey Metronome at $0.99 against SynthMaster 2's $14.99. AudioKit Hey Metronome also leads on in-app purchases (none vs 32) and ads (none vs shown). On rating and ratings volume 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

AudioKit Hey Metronome costs $0.99 and SynthMaster 2 $14.99 up front. SynthMaster 2 sells 32 one-off in-app purchases. AudioKit Hey Metronome asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for AudioKit Hey Metronome against 4.8 for SynthMaster 2. Both are backed by a comparable volume of ratings — 460 and 474 respectively. Written reviews are what separate them: 78% of AudioKit Hey Metronome's written reviews are positive against 68% of SynthMaster 2's.

UpkeepUpdate frequency

AudioKit Hey Metronome ships an update every 9 days, SynthMaster 2 every 3 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard8 real differences · 2 level
AudioKit Hey Metronome versus SynthMaster 2: the parameters behind the verdict, then further details
ParameterAudioKit Hey MetronomeSynthMaster 2
Price$0.99 — better$14.99
Rating4.9 (460 ratings) — better4.8 (474 ratings)
Positive reviews78.3% of reviews — better68.5% of reviews
Number of ratings460474 — better
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS11.0 — better15
Further details — not scored
Size78 MB918 MB
Age rating4+4+
DeveloperAudioKit ProKV331 Audio

Customer experience

AudioKit Hey Metronome

All ratings456 ratings
Positive98.7%
Neutral0.7%
Negative0.7%
Written reviews60 reviews
Positive78.3%
Neutral10.0%
Negative11.7%

SynthMaster 2

All ratings407 ratings
Positive94.3%
Neutral2.2%
Negative3.4%
Written reviews111 reviews
Positive68.5%
Neutral16.2%
Negative15.3%

User reviews

AudioKit Hey Metronome

From 460 App Store ratings

What we love

  • 👍 Easy to use and intuitive interface
  • 🎵 Variety of drum sounds and patterns
  • 🎤 Hands-free voice control functionality
  • 💡 Innovative metronome with customization options
  • 🔗 Ableton Link support for syncing

Room to improve

  • 🐛 Crashes on iOS 18 and newer versions
  • 🔊 No Bluetooth or AirPlay support
  • 🎤 Voice recognition triggers randomly on ambient noise
  • 📵 Metronome stops when app is backgrounded
  • 🔌 Not compatible with IAA or AUv3 plugins

SynthMaster 2

From 474 App Store ratings

What we love

  • 🚀 Best synth on iPad
  • 👍 Delicious sound
  • 👍 Tremendously powerful synth
  • 👍 Great synth with complex possibilities and great sound(s)
  • 👍 Perfeito

Room to improve

  • 🐛 Auswahl der Modulationsquellen funktioniert nicht richtig
  • 🐛 Echt schlecht
  • 🐛 Broken Preset System for a powerful synth
  • 🐛 Please fix the OSC behavior on Square and Saw
  • 🐛 Preset issues

Bugs and requests

AudioKit Hey Metronome

Reported bugs

8 issues
  • App crashes immediately on launch with iOS 18.1
  • Metronome stops playing when app is brought to foreground
  • Voice recognition mistakes random noises for commands
  • Screen lock causes audio to become distorted/lo-fi
  • Microphone remains active after app closes
Show 3 more
  • Conflicts with Siri voice activation
  • App doesn't properly close with standard swipe gesture
  • Audio degradation every few bars when screen is locked

Requested features

10 requests
  • Remember tempo and settings between sessions
  • Simple backbeat or one-click metronome option
  • Tap tempo with voice command feedback
  • Mute/unmute touch gesture equivalent
  • Option to disable voice prompts
Show 5 more
  • Bluetooth and AirPlay support
  • IAA and AUv3 plugin compatibility
  • Keep screen on while metronome is playing
  • Proper app exit/quit button
  • Counting off feature with voice commands

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

None

AudioKit Hey Metronome

No in-app purchases

32 purchases

SynthMaster 2

One-time32
  • BigTone Tableworks Vol.2$1.99
  • Burak Yeter Synth Sounds Vol1$1.99
  • Aiyn Zahev Expansion 1$1.99
Show 29 more
  • 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 AudioKit Hey Metronome free?
AudioKit Hey Metronome costs $0.99, with no in-app purchases.
Is SynthMaster 2 free?
SynthMaster 2 costs $14.99, and also offers in-app purchases.
Which has better reviews, AudioKit Hey Metronome or SynthMaster 2?
AudioKit Hey Metronome is rated higher. AudioKit Hey Metronome averages 4.9 out of 5 from 460 ratings, while SynthMaster 2 averages 4.8 from 474 ratings.
Do AudioKit Hey Metronome or SynthMaster 2 have ads?
SynthMaster 2 shows ads; AudioKit Hey Metronome does not.
Which is updated more often, AudioKit Hey Metronome or SynthMaster 2?
AudioKit Hey Metronome ships an update every 9 days, and SynthMaster 2 every 3 weeks. Most recently, AudioKit Hey Metronome was updated on October 26, 2026 and SynthMaster 2 on October 27, 2026.

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