Comparison

CMP Grand Piano vs Piano Visualizer

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

Head to head
About

CMP Grand Piano

Experience a high-quality virtual grand piano with realistic sound and low latency. Connect an external MIDI keyboard for professional stage use or practice. Record and share your musical creations.

Highlights
  • Realistic grand piano sound with 1.7GB+ samples
  • Bluetooth LE MIDI, Audio Unit, and Inter-App Audio support
  • Connect external MIDI keyboards
  • Low resource consumption for older devices
  • MIDI player/recorder with export options
  • Hermode Tuning for brilliant sound
  • Configurable audio latency
Features
Read full description

The second best sounding piano app in the App Store (after "Colossus Piano")! Convince yourself by watching and listening to the demo video on our product website! This app supports Bluetooth LE MIDI, as well as Audio Unit and Inter-App Audio! CMP Grand Piano is a high quality virtual piano sound module for your iPad, iPhone and iPod Touch. It is designed for professional usage on stage by connecting an external MIDI keyboard to the iPad / iPhone / iPod touch by using the Apple USB camera adapter or another adapter supported by Apple.¹ In comparison to "Colossus Piano" this app especially has a lower resource consumption and runs thus also on much older devices. CMP Grand Piano provides a very realistic sound by using a very large collection of audio samples of more than 1.7 GB (uncompressed) in size. Various articulations of each key of a real piano were sampled in full length and high quality to assemble this realistic sound. Real-time disk streaming is utilized to playback the respective audio samples with very low latency. Sound Features: - Two high quality base sounds ("Grand Piano" and "Jazz Piano") with more than 1.7 GB in size. - Two additional sounds available as in-app purchase ("Concert Grand" and "Upright Pianino") with additional 1.6 GB and 1.1 GB respectively in size. - Polyphony up to several hundred voices.² - Configurable audio latency down to 1ms. - Integrated effects with 17 presets. - MIDI velocity response curve editor to fine tune the feeling of your MIDI keyboard, save them as presets if you use more than one keyboard. - App can keep running in the background, so you can play piano while e.g. using Safari or another app to display scores or surfing the Internet. - Hermode Tuning: Makes the sound more brilliant by controlling the pitch of the notes in multivoiced music to better frequency ratios than with fixed tuning. This dynamic tuning imitates the tuning behavior of well educated musicians with string and wind instruments and of singers in professional choirs. - Provides Audio Unit v3 plugin version of this app, which allows it to be used as virtual instrument directly within third-party multi-track DAW apps (iOS 9.3 and higher). - Supports Apple's "Inter-App Audio" system for audio & MIDI streaming between other apps. - Supports "JACK Audio Connection Kit" for audio & MIDI streaming between other apps (up to iOS 6.1.3). MIDI Player / Recorder: - Record, save and load your songs in standard MIDI file format. - Export and share your song as MIDI file or as audio (.wav, .m4a) file. - Unlimited amount of tracks. - Unlimited recording and playback length. - Open MIDI (.mid) files directly from other apps (i.e. from Safari, Mail). - Load your favorite songs as MIDI files from the Internet, and watch at the virtual keyboard how to play it. - Metronome. - Use the "Tempo Zoom" dial knob to i.e. slow down playback at any time and learn your favorite songs more easily. ¹ For more information about supported adapters and MIDI keyboard devices, please visit our product website. ² Polyphony depends on the exact device model being used. You find a polyphony table on our product website. Privacy: We take your privacy very seriously. None of our apps contain so called „spy” behaviors and we committed ourself to a very high privacy standard. For more information about our privacy commitment, read our „Privacy Policy for Mobile Apps”.

About

Piano Visualizer

Experience piano music like never before with detailed 3D animations of a grand piano's inner workings. Watch any music or MIDI file come to life with real-time, mechanically accurate visuals, including augmented reality and tactile feedback options.

Highlights
  • Mechanically accurate 3D grand piano model
  • Versatile audio and MIDI input
  • Live, real-time animation
  • Transparent view mode
  • Augmented Reality mode
  • Tactile feedback (iOS)
Read full description

Dive into the elegance of piano music paired with groundbreaking technology. Piano Visualizer transforms how you experience music, offering a stunning 3D glimpse into the inner workings of a grand piano through detailed, mechanically accurate animations. Discover the Magic of Piano Visualizer: Imagine watching a piano play itself with exact precision - from the striking of each key to the movement of hammers and dampers. With Piano Visualizer, unleash the true beauty of piano performances right from your Mac, iPhone, iPad, or Apple Vision Pro. Key Features You’ll Love: - Mechanically Accurate 3D Model: Explore all intricacies of a grand piano in high-definition 3D. - Versatile Audio Input: Feed any music or midi file into the app and watch it come to life. - Live Animation: Enjoy real-time animations of a grand piano. - Transparent View Mode: Peek into the piano’s inner mechanisms with an innovative see-through display option. - Augmented Reality Mode: (Available on mobile devices) Step into new dimensions and view performances right in your living space. - Feel Every Note: (Available on iOS devices) Experience every keystroke with tactile feedback through CoreHaptics. Privacy and Convenience Hand in Hand: Your performances are personal. That’s why all processing in Piano Visualizer is conducted on your device, ensuring that your data remains private and secure with no internet connection required.

Screenshots

CMP Grand Piano4 screens
Piano Visualizer4 screens

Verdict

The call

The clearest difference is rating: CMP Grand Piano at 4.2 against Piano Visualizer's 1.0. CMP Grand Piano also leads on ratings volume (15 vs 1) and iOS requirement (12.0 vs 26.0). Piano Visualizer's advantage is in-app purchases (none vs 2) and price ($9.99 vs $14.99). On update cadence, 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

CMP Grand Piano costs $14.99 and Piano Visualizer $9.99 up front. CMP Grand Piano sells 2 one-off in-app purchases. Piano Visualizer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CMP Grand Piano holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: CMP Grand Piano has 15 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

CMP Grand Piano ships an update every 2 months, Piano Visualizer every 3 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

Scorecard6 real differences · 4 level
CMP Grand Piano versus Piano Visualizer: the parameters behind the verdict, then further details
ParameterCMP Grand PianoPiano Visualizer
Price$14.99$9.99 — better
Rating4.2 (15 ratings) — better1.0 (1 ratings)
Positive reviews78.2% of reviews—
Number of ratings15 — better1
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Vision Pro — better
Requires iOS12.0 — better26.0
Further details — not scored
Size1.7 GB247 MB
Age rating4+4+
DeveloperChristian Schoenebeck d/b/a CrudebyteWeida Fan

Customer experience

CMP Grand Piano

All ratings15 ratings
Positive80.0%
Neutral13.3%
Negative6.7%
Written reviews87 reviews
Positive78.2%
Neutral3.4%
Negative18.4%

Piano Visualizer

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

2 purchases

CMP Grand Piano

One-time2
  • Upright Pianino$4.99
  • Concert Grand Piano$8.99
None

Piano Visualizer

No in-app purchases

Questions

Is CMP Grand Piano free?
CMP Grand Piano costs $14.99, and also offers in-app purchases.
Is Piano Visualizer free?
Piano Visualizer costs $9.99, with no in-app purchases.
Which has better reviews, CMP Grand Piano or Piano Visualizer?
CMP Grand Piano is rated higher. CMP Grand Piano averages 4.2 out of 5 from 15 ratings, while Piano Visualizer averages 1.0 from 1 ratings.
Do CMP Grand Piano or Piano Visualizer have ads?
Neither CMP Grand Piano nor Piano Visualizer shows ads.
Which is updated more often, CMP Grand Piano or Piano Visualizer?
CMP Grand Piano ships an update every 2 months, and Piano Visualizer every 3 months. Most recently, CMP Grand Piano was updated on October 24, 2026 and Piano Visualizer on October 20, 2026.

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