Comparison

SynthMaster 3 Player vs Metronome Hero

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

Head to head
About

SynthMaster 3 Player

This music app allows users to play and tweak a vast library of synthesizer presets. It offers a multi-layer architecture and extensive expansion content for diverse sound design possibilities. Users can easily browse and preview sounds before loading them.

Highlights
  • Tweak existing synthesizer presets
  • Multi-layer architecture (up to 16 layers)
  • Edit keyboard zones, velocity, voicing, unison, arpeggiator, FX
  • Compatible with SynthMaster expansion banks
  • In-app shop for purchasing expansions
  • Preset previews with audio playback
Read full description

SynthMaster 3 Player iOS is the mobile player version of KV331 Audio's flagship synthesizer SynthMaster 3. It is tailored towards user who prefer tweaking existing presets over designing sounds from scratch. It is available for free on Apple AppStore as a standalone app and AUv3 plugin. Free Factory Content: SynthMaster 3 Player iOS comes with 200 presets curated from SynthMaster One, SynthMaster 2 and SynthMaster 3 factory libraries. Once users complete registration, the number of free presets increase to 500. Rich Expansion Content: SynthMaster 3 Player iOS is compatible with SynthMaster One, SynthMaster 2 and SynthMaster 3 expansions. There are currently 60 expansion banks for a wide range of genres to choose from. Users can easily purchase these expansions through the In-App Shop inside the app. Much more than a ROMpler synth: Although users can not edit layer modules and modulation sources, they can edit all other layer parts such as keyboard zones, velocity zones, voicing, unison, arpeggiator, sequencer and insert FX. Multi-layer Architecture: Each SynthMaster 3 Player iOS instance can have up to 16 layers. Users can add new layers by loading existing presets into layers through the preset browser. Preset Previews: Presets in SynthMaster 3 Player iOS have built-in previews. Users can listen to the previews of presets after turning on the preview mode. In-App Shop: Users can easily purchase expansion banks as in-app-purchases.

About

Metronome Hero

This app provides real-time rhythm training for musicians, offering visual feedback on timing accuracy. It supports various input methods and includes features to build internal time and practice with others.

Highlights
  • Real-time timing feedback
  • Multiple input methods (tap, mic, MIDI)
  • Adaptive tempo training
  • Click dropout practice modes
  • Band Sync for group practice
  • Progress tracking and session summaries
Features
Read full description

The metronome that listens back. Metronome Hero is a free rhythm training app for musicians. Play your instrument, tap the screen, or connect MIDI — and see exactly whether you’re early, late, or right on the beat. All core features are free, including scoring, adaptive tempo, MIDI input, challenges, Band Sync, and session summaries. An optional one-time purchase unlocks the practice calendar with iCloud sync so you can track your progress over time. REAL-TIME TIMING FEEDBACK See your notes in six live visualizations: Note Highway, Playhead, Circular, Tube, Spiral, and Scrolling History. PLAY ANY WAY Use tap input, microphone detection with automatic gain, or MIDI with latency calibration. TRAIN SMARTER Adaptive Tempo increases BPM when accuracy improves and backs off when consistency drops. BUILD INTERNAL TIME Practice with click dropouts, backbeat-only modes, random mute cycling, subdivisions, and multiple difficulty levels. PRACTICE TOGETHER Band Sync lets groups share the same pulse, compare timing, and improve ensemble groove in real time. KEEP IT MUSICAL Choose from drum sounds, instrument voices, scales, chords, and arpeggios. WORKS WITH YOUR SETUP Supports Ableton Link, AUv3 hosts, and iCloud sync across iPhone, iPad, Mac, and Apple Watch. TRACK YOUR PROGRESS Review streaks, scoring, timing distribution, and tempo changes after every session. Metronome Hero is more than a metronome. It’s a rhythm training system for musicians who want stronger groove, better accuracy, and more confidence. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://metronomehero.com/privacy-policy.html

Screenshots

SynthMaster 3 Player4 screens
Metronome Hero4 screens

Verdict

The call

The clearest difference is rating: SynthMaster 3 Player at 4.7 against Metronome Hero's 4.3. SynthMaster 3 Player also leads on review sentiment (87% vs 70%) and ratings volume (62 vs 13). On price, update cadence, ads and in-app purchases 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 3 Player sells 15 one-off in-app purchases and Metronome Hero sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

SynthMaster 3 Player holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 62 and 13 respectively. Written reviews point the same way: 87% of SynthMaster 3 Player's written reviews are positive against 70% of Metronome Hero's.

UpkeepUpdate frequency

SynthMaster 3 Player ships an update weekly, Metronome Hero every 5 days. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 6 level
SynthMaster 3 Player versus Metronome Hero: the parameters behind the verdict, then further details
ParameterSynthMaster 3 PlayerMetronome Hero
PriceFreeFree
Rating4.7 (62 ratings) — better4.3 (13 ratings)
Positive reviews86.7% of reviews — better70.0% of reviews
Number of ratings62 — better13
Update frequencyWeeklyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS15 — better17.0
Further details — not scored
Size2.2 GB68 MB
Age rating4+4+
DeveloperKV331 AudioAudioKit Pro

Customer experience

SynthMaster 3 Player

All ratings55 ratings
Positive90.9%
Neutral3.6%
Negative5.5%
Written reviews15 reviews
Positive86.7%
Neutral6.7%
Negative6.7%

Metronome Hero

All ratings13 ratings
Positive84.6%
Neutral0.0%
Negative15.4%
Written reviews10 reviews
Positive70.0%
Neutral10.0%
Negative20.0%

In-app purchases

15 purchases

SynthMaster 3 Player

One-time15
  • SynthMaster 2 Expansions Bundle$2.99
  • New Loops Psytrance Sounds Volume 1$2.99
  • Loopsy Rave Sounds Volume 1$2.99
Show 12 more
  • NatLife Melodic Techno Sounds Vol 1$4.99
  • New Loops Cinematic Sounds Volume 1$4.99
  • New Loops Synthwave Sounds Volume 1$4.99
  • Luftrum 33$4.99
  • Loopsy Tech House Sounds Volume 1$4.99
  • Loopsy House Sounds Volume 1$4.99
  • SynthMaster 2 Factory Presets$9.99
  • SynthMaster 3 Factory Presets$9.99
  • SynthMaster One Expansions Bundle$14.99
  • SynthMaster 3 Expansions Bundle$19.99
  • SynthMaster Factory Presets Bundle$24.99
  • SynthMaster Everything Bundle$99.99
1 purchases

Metronome Hero

One-time1
  • Lifetime Access$19.99

Questions

Is SynthMaster 3 Player free?
SynthMaster 3 Player is free to download, with in-app purchases available.
Is Metronome Hero free?
Metronome Hero is free to download, with in-app purchases available.
Which has better reviews, SynthMaster 3 Player or Metronome Hero?
SynthMaster 3 Player is rated higher. SynthMaster 3 Player averages 4.7 out of 5 from 62 ratings, while Metronome Hero averages 4.3 from 13 ratings.
Do SynthMaster 3 Player or Metronome Hero have ads?
Neither SynthMaster 3 Player nor Metronome Hero shows ads.
Which is updated more often, SynthMaster 3 Player or Metronome Hero?
SynthMaster 3 Player ships an update weekly, and Metronome Hero every 5 days. Most recently, SynthMaster 3 Player was updated on October 25, 2026 and Metronome Hero on October 21, 2026.

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