WoodTroller vs Chord Analyzer Z
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WoodTroller
This app functions as a multi-touch bar MIDI controller for MPE and MIDI V2. It offers customizable rotary controls and buttons to manage various parameters and send MIDI commands, with iCloud syncing for presets.
- MPE touch bar with individual pitch shift, pressure, and CC74 control
- 8 customizable rotary controls for sending multiple CC messages
- 8 programmable buttons for sending various MIDI commands
- User-definable rotary and button names, colors, and ranges
- Preset storage and automatic syncing via iCloud
- Stand-alone app and AUv3 plugin support
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WoodTroller is NOT an app to annoy people. It’s an MPE and midi V2 multi touch bar keyboard and midi controller : The MPE touch bar supports multiple notes with individual pitch shift (horizontal movement), pressure and cc74 (vertical movement). WoodTroller has 8 general purpose rotary controls : - Each can send 6 different CC messages to different channels. - Each of the 6 command values can be mapped differently to the full rotary range. - So 1 rotary can control several parameters on the same or on different instruments. - Rotary names, colour, unit, range can all be user set. WoodTroller also has 8 general purpose on-off or push buttons : - Each button can send up to 8 different midi commands (CC, PC, NoteOn, …) to different channels. - This allows to quickly switch multiple midi instruments or devices to another program or to other settings. - Each midi command’s data value can be auto incremented/decremented. - All button names, colour, type can be user set. All settings can be stored in presets in iCloud which yield automatic preset syncing between several WoodTrollers on different devices. WoodTroller is available as stand-alone app and as AUv3 plugin.
Chord Analyzer Z
Analyze music in real-time with visual and audible feedback. Record and playback audio, convert to MIDI, and identify chord structures and sound strength for instruments and vocals.
- Real-time chord and harmony analysis
- Spectrum Roll Graph visualization
- Audio recording and playback
- MIDI file conversion and sharing
- Flush Keyboard and Pitch Pipe
- Zoom and scrollable keyboard
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◎ Newly added conversion output to MIDI file (SMF) and file sharing function. ● Equipped with "Spectrum Roll Graph" that allows you to visually check the chord structure and sound strength of singing voice and harmony of musical instruments in real time. ● The sound picked up by the built-in microphone is recorded automatically saved. If you play the file, you can reproduce and check it as many times as you like. ● You can use not only recorded files but also audio files shared from other apps. ● The pitch and strength of chords and single notes can be checked both visually and audibly using "Flush Keyboard" and "Pitch Pipe". ● Simply touch the Spectrum Roll Graph to repeat playback of the same point any number of times. ● The keyboard and the graph can be freely controlled by intuitive touch operations for zooming and scrolling. ・Because the musical tone composition of multiple instruments and singing voices such as choruses and ensembles can be viewed in real time in the form of power spectra, it is also useful for play by ear . ・By playing the pitch pipe while looking at the spectrum graph, you can hear the harmony parts and the chords of the instruments. ・Please use it for checking and practicing the sound of the harmony part of karaoke. ・You can observe the overtone components that characterize musical instruments and singing voices. ・It is also useful for chord analysis and pitch analysis of music played in the background, such as Apple Music and YouTube. ■ Features of the app ・Real-time analysis of chords and harmony ・Various and rich screen display ・Screen mode linked to device orientation ・Real-time analysis of microphone input sound ・Recording of microphone input sound ・Playback of recorded files ・Playback loop, playback jump ・Analysis of recorded files ・Play shared files ・Analysis of shared files ・Pitch pipe ・Zoom & scroll keyboard ・Spectral Roll Graph ・Flash Keyboard ・(NEW) Conversion output to MIDI file (SMF) and file sharing ● Display items (real time) ・Spectrum Roll Graph ・MIDI note number ・Power Spectrum ・Oscilloscope ・Microphone input level ・Audio level meter ・Playback progress bar ● Sound playback ・Audio files (recorded files, shared files) ・Loop playback ・Replay jump ・Pitch pipe (6 types of tones, keyboard tap) ● Precautions ・To prevent howling, the microphone input signal is automatically disabled during pitch pipe or audio file playback. ・Instrumental sounds and singing voices contain sounds of various frequencies, such as fundamental tones and integer harmonics, and this app allows you to visually observe them.
Screenshots
Verdict
The clearest difference is review sentiment: WoodTroller at 100% against Chord Analyzer Z's 33%. WoodTroller also leads on update cadence (fortnightly vs every 4 months). Chord Analyzer Z's advantage is price ($1.99 vs $9.99). On ads, in-app purchases, monetization model 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
WoodTroller costs $9.99 and Chord Analyzer Z $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
WoodTroller ships an update fortnightly, Chord Analyzer Z every 4 months. Both last shipped on November 3, 2026.
| Parameter | WoodTroller | Chord Analyzer Z |
|---|---|---|
| Price | $9.99 | $1.99 — better |
| Rating | 4.8 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 33.3% of reviews |
| Number of ratings | 6 — better | — |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad, Mac | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 12 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Woodman's Immaculate Maple Syrup Studio | Masanori Katsuta |
Customer experience
WoodTroller
Chord Analyzer Z
In-app purchases
WoodTroller
No in-app purchases
Chord Analyzer Z
No in-app purchases
Questions
Is WoodTroller free?
Is Chord Analyzer Z free?
Do WoodTroller or Chord Analyzer Z have ads?
Which is updated more often, WoodTroller or Chord Analyzer Z?
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