CMP Grand Piano vs ChordPainter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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”.
ChordPainter
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Chordpainter creates songbooks of piano songs as chord diagrams without any knowledge of music notes. What has always been standard for guitarists, Chordpainter now also creates this for piano players. Simply input chords via midi or enter them manually. The chords are automatically recognized and can be edited or renamed as desired. Then simply print or export as pictures, by email or into Dropbox. All features in an overview: ------------------------------------------------------------------------ - Creation of chord images with up to 10 notes per chord - Automatic recognition of chords separated for the left and right hand - Input chords manually or via MIDI keyboard - Automatic detection of Midi inputs and display of the Midi source - Bluetooth Midi adapters from Yamaha or QuiccoSound are also supported - Transfer a chord to the current song via button or MIDI trigger - Piano is fully playable with sound, either manually or via MIDI input - Clear button to remove all entered notes - Free definable Midi trigger (setting is stored) - Complete online manual available in the App - Notes, program changes or controller (pedal) are accepted as Midi trigger - Midi Analyzer in the main display for all incoming MIDI events - Intelligent mode to assign chords to the right and left hand - Display of the intervals, separated for chords of the right and left hand - All chords in the song can be sorted using Drag & Drop - Language in the APP can be switched between English and German - Chords can be edited, renamed or deleted also after creation - Optimized user interface for all iPad sizes - When naming the chords, there are buttons for common chord suffixes - Chord images optimized for high-resolution printing on laser printers in grayscale - Songbook view to display all the chords of a song large on one page with Midi scrolling - PDF Export for all songs and demo songs to printout or for use in other APPs - Sound output with real sampled piano sounds including velocity - Sound can be enabled or disabled (setting is saved) - Export der Akkordbilder in die Bilder Gallery oder Dropbox - Constantly expanded list of demo songs, partial with songbook PDFs - Song library with an unlimited number of songs - List view with all songs plus number of chords in the song - Songs can be created, copied, renamed or loaded for editing - Export of chord images to the Gallery or Dropbox - You can also export by email (default email address stored) - Automatic backup of the song library when export by mail or dropbox - Restore the song library with "Open in" function in iOS
Screenshots
Verdict
The clearest difference is price: ChordPainter at $2.99 against CMP Grand Piano's $14.99. ChordPainter also leads on in-app purchases (none vs 2). CMP Grand Piano's advantage is update cadence (every 2 months vs every 22 months) and device support (3 vs 1). On ads and iOS requirement 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
CMP Grand Piano costs $14.99 and ChordPainter $2.99 up front. CMP Grand Piano sells 2 one-off in-app purchases. ChordPainter asks for nothing beyond the download.
CMP Grand Piano ships an update every 2 months, ChordPainter every 22 months. The most recent releases landed on November 10, 2026 and November 11, 2026 respectively.
| Parameter | CMP Grand Piano | ChordPainter |
|---|---|---|
| Price | $14.99 | $2.99 — better |
| Rating | 4.2 (15 ratings) — better | — |
| Positive reviews | 78.2% of reviews | — |
| Number of ratings | 15 — better | — |
| Update frequency | Every 2 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 1.7 GB | 195 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Schoenebeck d/b/a Crudebyte | Stefan Arnhold |
In-app purchases
CMP Grand Piano
- Upright Pianino$4.99
- Concert Grand Piano$8.99
ChordPainter
No in-app purchases
Questions
Is CMP Grand Piano free?
Is ChordPainter free?
Do CMP Grand Piano or ChordPainter have ads?
Which is updated more often, CMP Grand Piano or ChordPainter?
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