ChordPainter vs VAPolyMk4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChordPainter
Read full descriptionHide full description
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
VAPolyMk4
This app is a powerful bi-timbral polyphonic synthesizer with advanced features like output morphing and a ring modulator. It offers extensive sound design capabilities with multiple oscillators, filters, and envelopes, and can be used standalone or as an AudioUnit Extension.
- Bi-timbral polyphonic synthesis
- Output morphing and ring modulator
- Multiple oscillators, filters, and envelopes
- Standalone and AudioUnit Extension (AUv3) support
- Built-in effects and piano roll sequencer
- MIDI 2.0 and Ableton Link support
- iCloud Drive for project sharing
Read full descriptionHide full description
VAPolyMk4 is bi-timbral polyphonic synthesizer, which features output morphing, classic ring modulator and global offset parameter control. Each synthesizer consists of three oscillators, resonant low pass and hight pass filter, amplifier, three envelope generators and two LFO. Two synthesizers can be configured as layer or split. VAPolyMk4 operates as a stand alone or as an AudioUnit Extension (AUv3) for iPhone, iPad and Mac. Stand Alone supports Ableton Link, MIDI and audio file export. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. Main Features Bi-timbral Polyphonic Synthesizer. Output morphing. Classic Ring Modulator. Global Offset Parameter Control. Three oscillators featuring hard sync and through zero FM. Maximum 8 voice polyphony. it depends on performance of the device it is running. Built-in effects and piano roll sequencer. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Audio Unit Extension (AUv3). Support MIDI 2.0. Support Foot Pedal and Per Note Control. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Full Factory Preset: 230, Synth CH: 160, Effect: 40 Improvements Support MIDI Foot Pedal (CC#11, CC#64) Support MIDI2.0 Per Note Control Messages MIDI CC Settings are saved. It will be recovered when the app launched in the next time. UI Color can be selected from black, navy or gray. System Requirements iOS 17.0 or later Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended. if sound is distorted when using a device with less CPU power, reduce number of voices. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension.
Screenshots
Verdict
The clearest difference is price: ChordPainter at $2.99 against VAPolyMk4's $14.99. ChordPainter also leads on iOS requirement (13.0 vs 16.6). VAPolyMk4's advantage is update cadence (every 2 months vs every 22 months) and device support (3 vs 1). On 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
ChordPainter costs $2.99 and VAPolyMk4 $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ChordPainter ships an update every 22 months, VAPolyMk4 every 2 months. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.
| Parameter | ChordPainter | VAPolyMk4 |
|---|---|---|
| Price | $2.99 — better | $14.99 |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 22 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPad | iPhone, iPad, Mac — better |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 195 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Arnhold | Ryo Togawa |
In-app purchases
ChordPainter
No in-app purchases
VAPolyMk4
No in-app purchases









