FreEWI vs ChordMaps2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FreEWI
This app acts as a virtual MIDI event mapper for iOS devices. It allows users to remap, translate, and transpose MIDI events between different applications, enhancing flexibility for musicians. It's designed to work with other CoreMIDI-compatible apps, especially MidiBridge.
- Remap MIDI channels
- Remap controller messages
- Translate controller messages to aftertouch
- Remap program change messages
- Transpose note events
- Fast switching with MidiBridge
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Virtual inline MIDI event mapper for iOS FreEWI (pronounced free-wee) was designed as a free add-on for MidiBridge for EWI players, but can be used by anyone who needs to map MIDI events between apps. For mapping to/from external MIDI interfaces (or CoreMIDI network), MidiBridge is required. Using FreEWI inline in a MIDI event stream, events can be processed as follows: - Remap incoming MIDI channels to a different channel - Remap incoming controller messages to a different controller - Translate incoming controller messages to channel pressure (aftertouch) - Remap incoming program change messages to a different number - Transpose incoming note events up or down Although primarily designed for use with MidiBridge, FreEWI can be used with other apps that have CoreMIDI virtual support. In order for another app to be compatible, the following applies: - Generating app must be able to write to FreEWI's virtual MIDI port. - Receiving app must be able to read from FreEWI's virtual MIDI port - Generator and receiver can be same app FreEWI supports fast switching to and from MidiBridge, so you can fast-switch/launch MidiBridge from FreEWI and vice-versa. Other OMAC apps that support fast-switching will also be able to fast-switch to FreEWI. FreEWI does add a small amount of latency which varies depending upon the speed of the device and how busy the device is. Runs on iPad, iPhone and iPod Touch and requires iOS 5.1 or greater.
ChordMaps2
This music app allows musicians, songwriters, educators, and students to explore and improvise chord progressions, melody, and bass lines. It utilizes "Musical Maps" for intuitive chord exploration and can function as a MIDI controller for external synth apps.
- Explore chord progressions on Musical Maps
- Improvise melody and bass lines
- Supports major and minor keys
- MIDI controller functionality
- Demonstrate music theory concepts
- Create ear-training exercises
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ChordMaps2 is a music app for iPad which allows musicians, songwriters, music educators, and students to explore and improvise chord progressions, melody lines, and bass lines, in both major and minor keys, most of the time tapping with just one or two fingers. The most powerful feature of ChordMaps2 is that users can explore and play common chord progressions by touching chord locations on "Musical Maps." You can work with ChordMaps2 as a... Songwriter - to explore melody lines, bass lines, and chord progressions when you are away from your guitar or keyboard. Music Educator - to demonstrate principles of music theory, (including major and minor scales, diatonic and secondary chords, common chord progressions like IV-V-I, ii-V-I, I-vi-IV-V, I-V-vi-IV, etc.) You can also create spontaneous ear-training exercises, and explore melodic lines and chord progressions with students in an interactive environment. MIDI Musician - to tap out chord sequences and hear them played by one or more of the synth apps on your iPad, or you can send the MIDI information out through a MIDI interface to a computer running a digital audio workstation (DAW) like GarageBand or Logic Pro. How ChordMaps2 Works... ChordMaps2 is a MIDI controller. It works by being paired with a synthesizer app that generates sound. (Example synth apps include ThumbJam, SampleTank, bs-16i, iM1, and many more.) ChordMaps2 sends the MIDI signal; the synth app responds to the MIDI information and creates the audio. Video demonstrations of ChordMaps2 are found at the website. (Click the Developer Website link or visit Mugglinworks.com/ChordMaps2).
Screenshots
Verdict
The clearest difference is price: FreEWI at Free against ChordMaps2's $9.99. FreEWI also leads on review sentiment (100% vs 82%) and device support (3 vs 1). ChordMaps2's advantage is rating (4.1 vs 3.5) and ratings volume (26 vs 2). On update cadence, 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
FreEWI is free to download; ChordMaps2 costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ChordMaps2 holds the better App Store score, 4.1 against 3.5. That said, the two scores are not equally well evidenced: ChordMaps2 has 26 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 100% of FreEWI's written reviews are positive against 82% of ChordMaps2's, so the app with the better star average is not the one people write more warmly about.
FreEWI ships an update every 11 months, ChordMaps2 every 6 months. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.
| Parameter | FreEWI | ChordMaps2 |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 3.5 (2 ratings) | 4.1 (26 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 82.1% of reviews |
| Number of ratings | 2 | 26 — better |
| Update frequency | Every 11 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 6.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 2 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Audeonic Apps | Malcolm Mugglin |
Customer experience
FreEWI
ChordMaps2
In-app purchases
FreEWI
No in-app purchases
ChordMaps2
No in-app purchases









