Comparison

Musk MIDI Player vs Harmonicer

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

Head to head
About

Musk MIDI Player

Play MIDI files with customizable sounds and playback speeds. This app allows you to transpose, mute tracks, and follow notes on a virtual keyboard. It also supports lyrics display and spoken announcements for bars and beats.

Highlights
  • Load MIDI files and sound libraries
  • Adjust playback speed and transpose
  • Visualize notes on a keyboard
  • Display and speak lyrics
  • Mute or solo tracks
  • Integrated web search for MIDI files
  • Support for various audio formats
Features
Read full description

Musk MIDI Player: Your instant MIDI player - just add sounds and MIDI files! * Load any MIDI file and sound library (a small General MIDI sound font is included) * You can search the web for MIDI files and download. * Play MIDI files up to 8 times slower or faster * Transpose MIDI files. * Follow the MIDI notes on the keyboard and distinguish different MIDI channels * Read along the lyrics * Let the app speak the lyrics during playback * Let the app announce the bar and beat numbers. So you can easier follow the notes in a printed score. * Mute or solo tracks or use them to navigate * Use automatic sound switching or customize the sound associated with each MIDI channel. * Mix with the original sound. (Deactivated on iOS14, reactivated on iOS15) Integrated web search: * Use the built-in web browser to search for MIDI files on the web. * The browser highlights MIDI (.mid, .midi) and Karaoke (.kar) links. * Downloaded files play back immediately. Navigation: * Jump to a specific position using a slider * To jump back to that position using the repeat button * Jump to the position of certain meta-events (lyrics, markers, time signature, key signature and tempo changes) Supported file formats and extensions: * MIDI (mid, midi) * MIDI karaoke (kar) * Sound fonts (sf2) * Downloadable Sounds (dls) * Logic Pro EXS-24 instrument files (exs) * Audio Unit Presets (aupreset) * Zip files (zip) Importing files via: * ITunes: transmission via Mac or PC * ICloud: synchronizes the data on all your Apple devices. (Network connection required) * Other Apps from the manufacturer this app: All of his apps access to the same iCloud directory. (No network connection required) * Safari: search for a website that offers SoundFonts. Click on the file. Wait until it is downloaded. Then select this app in the "Open In" dialog. * Mail: Select the attachment and select this app in the "Open In" dialog. * Other apps: use the "Open In" dialog. (Dropbox, Google Drive, SkyDrive) Inter-App-Audio, Audiobus and Core-MIDI support: You can use the audio output of this app in other apps: * Record the mixed-down audio output in Garageband, AudioShare or other apps. * Add sound effects in GarageBand, VoiceSynth or other apps. * Use this App as a MIDI-Generator in Audiobus or in apps that can receive Core-MIDI notes. Limitations: * Speech output can not be sent to other apps. * Which app combinations are possible depends on Your hardware and Your sound fonts. * Playing MIDI files with many notes per second can push older devices to their limits. When you hear a scraping noise, try lowering the playback rate. Have fun!

About

Harmonicer

This app generates musical inspiration by combining MIDI quantization, harmonization, and arpeggiation. It offers extensive scale support and allows for the creation of complex chords and rhythmic patterns to enhance musical compositions.

Highlights
  • MIDI Quantizer with 20+ scales
  • Custom scale support
  • Harmonizer with up to 4 voices
  • Arpeggiator with 10 modes
  • Process MIDI from any source
  • Standalone use with internal keyboard
Features
Read full description

Instant Inspiration at Your Fingertips Harmonicer combines MIDI Quantizer, Harmonizer and Arpeggiator into one convenient package. At the core of Harmonicer lies its Quantizer feature with over 20 pre defined scales and support for custom scales. Whether you're a seasoned composer or a novice musician, Harmonicer empowers you to effortlessly create melodies that are harmonically rich and sonically captivating. Unlock Limitless Harmonic Possibilities Harmonicer's Harmonizer functionality takes your compositions to new heights by automatically generating lush chords and harmonies. With up to 4 additional voices and intuitive controls, you can explore a vast array of harmonic possibilities and infuse your music with depth and emotion. Unleash Your Creativity with Dynamic Arpeggiation With Harmonicer's Arpeggiator, intricate rhythmic patterns and melodic sequences are just a few taps away. Whether you're crafting pulsating basslines, mesmerizing synth leads, or intricate melodies, the Arpeggiator empowers you to infuse your tracks with movement and energy, adding a dynamic edge to your music. Combining Power and Versatility What sets Harmonicer apart is its seamless integration of these three powerful tools, allowing users to utilize them individually or in combination to achieve complex compositions with ease. Whether you're looking to fine-tune a melody, enrich your harmonies, or add rhythmic complexity, Harmonicer provides the tools you need to inspire your musical vision and bring it to life. Specs: - Quantizer with support for 20+ pre defined as well as custom scales - Harmonizer with up to 4 additional voices - Arpeggiator with 10 modes, note repeates, ratchets and more - Process MIDI from any source - Standalone use via internal keyboard Supports: - Standalone - AUv3

Screenshots

Musk MIDI Player4 screens
Harmonicer4 screens

Verdict

The call

The clearest difference is update cadence: Harmonicer at every 4 days against Musk MIDI Player's every 4 months. Harmonicer also leads on review sentiment (80% vs 56%) and device support (4 vs 2). Musk MIDI Player's advantage is price ($1.99 vs $4.99). On rating, ratings volume, 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

Musk MIDI Player costs $1.99 and Harmonicer $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Harmonicer holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 8 and 12 respectively. Written reviews point the same way: 56% of Musk MIDI Player's written reviews are positive against 80% of Harmonicer's.

UpkeepUpdate frequency

Musk MIDI Player ships an update every 4 months, Harmonicer every 4 days. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
Musk MIDI Player versus Harmonicer: the parameters behind the verdict, then further details
ParameterMusk MIDI PlayerHarmonicer
Price$1.99 — better$4.99
Rating4.5 (8 ratings)4.7 (12 ratings) — better
Positive reviews56.3% of reviews80.0% of reviews — better
Number of ratings812 — better
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.011.0 — better
Further details — not scored
Size16 MB23 MB
Age rating17+4+
DeveloperDr. Garbers SoftwareentwicklungKai Aras

Customer experience

Musk MIDI Player

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews16 reviews
Positive56.3%
Neutral6.3%
Negative37.5%

Harmonicer

All ratings12 ratings
Positive91.7%
Neutral8.3%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

Musk MIDI Player

No in-app purchases

None

Harmonicer

No in-app purchases

Questions

Is Musk MIDI Player free?
Musk MIDI Player costs $1.99, with no in-app purchases.
Is Harmonicer free?
Harmonicer costs $4.99, with no in-app purchases.
Which has better reviews, Musk MIDI Player or Harmonicer?
Harmonicer is rated higher. Musk MIDI Player averages 4.5 out of 5 from 8 ratings, while Harmonicer averages 4.7 from 12 ratings.
Do Musk MIDI Player or Harmonicer have ads?
Neither Musk MIDI Player nor Harmonicer shows ads.
Which is updated more often, Musk MIDI Player or Harmonicer?
Musk MIDI Player ships an update every 4 months, and Harmonicer every 4 days. Most recently, Musk MIDI Player was updated on October 23, 2026 and Harmonicer on October 25, 2026.

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