Comparison

Harmonizer vs iGrand Piano CS for iPad

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

Head to head
About

Harmonizer

This app helps infants develop perfect pitch by playing Shepard tones, aiding in pitch identity development. It also facilitates the study of chord relationships and displays the pitch of your singing.

Highlights
  • Shepard tone playback
  • Pitch identity development
  • Chord relationship study
  • Vocal pitch display
  • Infant music education
Features
Read full description

See and hear how music fits together. Harmonizer turns musical relationships into a colorful, interactive grid. Tap a hexagon to hear a note, or tap the triangle between three notes to play a major or minor chord. Sing or play a single note on an instrument, and watch the detected pitch light up. EXPLORE NOTES AND CHORDS Discover how neighboring notes connect through perfect fifths, major thirds, and minor thirds. Major and minor chords form triangles, making harmony something you can see, hear, and explore with your fingers. SEE YOUR VOICE Use the microphone to highlight the pitch you sing or play. Listen to a note, try matching it with your voice, and explore the connection between sound and color. CHOOSE YOUR LABELS Show note names or Movable Do syllables, with your choice of tonic. Keep labels visible, show them only when notes are active, or hide them to focus on the colors and sounds. EXPLORE YOUR WAY Choose from playing, pitch detection, or a mode that listens when you stop playing. Adjust the grid size to suit your screen and how you like to interact. HEAR HARMONY DIFFERENTLY Harmonizer uses Shepard tones—layered sounds that emphasize a note’s identity without a distinct octave. Every hexagon with the same note name produces the same sound. For curious beginners, students, teachers, and musicians, Harmonizer offers a hands-on way to explore pitch, chords, and musical patterns. No music theory knowledge is needed to start: touch a note and listen. Pitch detection requires microphone access.

About

iGrand Piano CS for iPad

Experience concert-quality grand and upright pianos with ultra-realistic sound and built-in recording. Edit and save custom variations, connect external keyboards, and compose anywhere. Expand your library with additional instrument packs.

Highlights
  • Ultra-realistic grand and upright pianos
  • High-definition stereo samples
  • Built-in MIDI recorder with overdubbing
  • Instrument editor with real-time controls
  • Audiobus and Inter-App Audio support
  • Expansion packs for more instruments
Read full description

THE CONCERT QUALITY PIANO APP UPDATED FOR AUDIOBUS AND INTER-APP AUDIO WITH NEW EXPANSION PACK, EQ AND USER VARIATIONS The ultimate piano instrument provides you with an extraordinary collection of ultra-realistic acoustic pianos along with built-in recording! Use the iRig KEYS and KEYS PRO portable keyboards (www.irigkeys.com) or the iRig MIDI 2 interface (www.irigmidi.com) to connect your external keyboard, and you're ready to compose, rehearse, perform and record with the very best instruments for your mobile world. You can now edit your sound even further with the new 3-band EQ and save up to 4 user variations per instrument. iGrand Piano puts the world's finest pianos right at your fingertips with studio-grade quality that stands up to the most powerful virtual instruments available on a computer. With high-definition stereo samples across multiple velocities, iGrand Piano brings you the most playable, expressive and beautiful sounding piano instruments available on a mobile device that you can play anytime and everywhere. iGrand Piano FREE gives you 2 world-class pianos (including one by registering) along with a capable recorder and metronome. The instruments in the FREE version are limited to the 4 octaves centered on middle C (C1 to C5). Purchase the “Upgrade to Full Version” option to get the full 88-note range and give your FREE app the same additional 6 instruments as the paid version. Add the Piano Expansion 1 via in-app purchase to extend your piano library with 9 additional high-quality instruments or the Piano Expansion 2 with 22 all-new instruments including the Hollywood Piano, piano + strings layers and harpsichords. Record your rehearsals or performances as MIDI with both overdubbing and punch-in capability, then export your track as audio via E-mail or File Sharing or Audio Copy to other iOS apps. With the built-in MIDI Recorder, you can change the tempo of your piece or even choose to use a different piano AFTER you've completed your performance! For composers of any level, the MIDI Recorder lets you capture and develop ideas anywhere your mobile life takes you. iGrand Piano also includes some professional MIDI performances to help you audition the various piano instruments or just inspire your own creative muse! The easy-to-use instrument editor puts real-time controls on the panel just above the keys to let you adjust the amount of ambience, the position of the lid (open, closed or anything in between), brightness, envelope release, key transposition and tuning. All edit knobs can be assigned to your choice of MIDI controllers for external fine-crafting of your instrument's sonic details. Virtual MIDI and MIDI Program Change are also supported along with Audiobus and Inter-App Audio for iOS 8. iGrand Piano features: - World-class, multi-velocity stereo grand and upright piano instruments (upright available by registering) - “Upgrade to Full Version” with 6 more pianos and full 88-note range instantly available via in-app purchase - Expandable libraries offer 31 additional instruments instantly available via in-app purchase - Intuitive instrument edit controls including ambience, lid, brightness, release, tuning and transpose - Included MIDI Recorder with overdub and punch-in capability - Export performances via E-mail, File Sharing and Audio Copy - Large visual metronome with variable click volume and adjustable tempo - Easy-to-use instrument editor with transpose to adjust ambience, tonality and tuning with 4 user variations per instrument - Audiobus and Inter-App Audio support for iOS 8 - Virtual MIDI and MIDI Program Change support - Low-latency for real-time playing - More than 64-voice polyphony on the latest devices - Designed in concert with iRig KEYS and iRig KEYS PRO portable MIDI keyboards and iRig MIDI 2 interface - Full version also available For more information: www.ikmultimedia.com/igrand www.irigkeys.com www.irigmidi.com

Verdict

The call

The clearest difference is in-app purchases: Harmonizer at none against iGrand Piano CS for iPad's 3. iGrand Piano CS for iPad's advantage is update cadence (every 5 months vs every 33 months) and iOS requirement (13.0 vs 17.0). On price, review sentiment, ads and 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. iGrand Piano CS for iPad sells 3 one-off in-app purchases. Harmonizer asks for nothing beyond the download.

UpkeepUpdate frequency

Harmonizer ships an update every 33 months, iGrand Piano CS for iPad every 5 months. Both last shipped on November 1, 2026.

Scorecard4 real differences · 6 level
Harmonizer versus iGrand Piano CS for iPad: the parameters behind the verdict, then further details
ParameterHarmonizeriGrand Piano CS for iPad
PriceFreeFree
Rating4.1 (16 ratings) — better—
Positive reviews45.5% of reviews — better43.5% of reviews
Number of ratings16 — better—
Update frequencyEvery 33 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPad
Requires iOS17.013.0 — better
Further details — not scored
Size3 MB643 MB
Age rating4+4+
DeveloperMatthew McLaughlinIK Multimedia US, LLC

Customer experience

Harmonizer

All ratings16 ratings
Positive81.3%
Neutral0.0%
Negative18.8%
Written reviews44 reviews
Positive45.5%
Neutral11.4%
Negative43.2%

iGrand Piano CS for iPad

All ratings36 ratings
Positive52.8%
Neutral8.3%
Negative38.9%
Written reviews170 reviews
Positive43.5%
Neutral13.5%
Negative42.9%

In-app purchases

None

Harmonizer

No in-app purchases

3 purchases

iGrand Piano CS for iPad

One-time3
  • Piano Expansion Pack$14.99
  • Piano Expansion Pack 2$14.99
  • Upgrade to Full Version$19.99

Questions

Is Harmonizer free?
Harmonizer is free to download, with no in-app purchases.
Is iGrand Piano CS for iPad free?
iGrand Piano CS for iPad is free to download, with in-app purchases available.
Do Harmonizer or iGrand Piano CS for iPad have ads?
Neither Harmonizer nor iGrand Piano CS for iPad shows ads.
Which is updated more often, Harmonizer or iGrand Piano CS for iPad?
Harmonizer ships an update every 33 months, and iGrand Piano CS for iPad every 5 months. Most recently, Harmonizer was updated on November 1, 2026 and iGrand Piano CS for iPad on November 1, 2026.

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