Comparison

FreEWI vs Midi Amuser

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

Head to head
About

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.

Highlights
  • Remap MIDI channels
  • Remap controller messages
  • Translate controller messages to aftertouch
  • Remap program change messages
  • Transpose note events
  • Fast switching with MidiBridge
Read full description

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.

About

Midi Amuser

This app allows you to connect, control, and record up to 10 MIDI instruments and controllers across 10 tracks. It manages routing, recalls instrument states, and enables live looping and complex song arrangements with a stable clock and zero latency.

Highlights
  • Connect up to 10 MIDI instruments
  • Connect up to 10 MIDI controllers
  • Zero latency
  • Step sequencer
  • Manage synth patches
  • Record and arrange MIDI events on 10 tracks
  • Arrange up to 16 song parts
Read full description

Midi Amuser lets you connect, control and record up to 10 instruments on 10 tracks with up to 10 input devices. It will take care of your routing, recall your instruments’ CC states across songs and arrangements. It lets you make live loops as well as create complex song arrangements. - make it the center of your MIDI setup - connect up to 10 MIDI instruments - connect up to 10 MIDI controllers - zero latency - stable clock - step sequencer - use a foot switch to record after the fact - manage all your synths’ patches - automatically save and recall Control Change states of your instruments - record, copy, quantise Midi events on up to 10 tracks - arrange up to 16 song parts - make templates for live performances - loop and arrange live - import and export songs

Screenshots

FreEWI1 screens
Midi Amuser4 screens

Verdict

The call

The clearest difference is rating: Midi Amuser at 4.8 against FreEWI's 3.5. Midi Amuser also leads on update cadence (every 5 weeks vs every 11 months) and ratings volume (6 vs 2). FreEWI's advantage is iOS requirement (6.0 vs 15.0). On price, ads, in-app purchases and monetization model 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Midi Amuser holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

UpkeepUpdate frequency

FreEWI ships an update every 11 months, Midi Amuser every 5 weeks. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
FreEWI versus Midi Amuser: the parameters behind the verdict, then further details
ParameterFreEWIMidi Amuser
PriceFreeFree
Rating3.5 (2 ratings)4.8 (6 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings26 — better
Update frequencyEvery 11 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS6.0 — better15.0
Further details — not scored
Size2 MB4 MB
Age rating4+4+
DeveloperAudeonic AppsTilmann Schuepfer

Customer experience

FreEWI

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Midi Amuser

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

FreEWI

No in-app purchases

None

Midi Amuser

No in-app purchases

Questions

Is FreEWI free?
FreEWI is free to download, with no in-app purchases.
Is Midi Amuser free?
Midi Amuser is free to download, with no in-app purchases.
Which has better reviews, FreEWI or Midi Amuser?
Midi Amuser is rated higher. FreEWI averages 3.5 out of 5 from 2 ratings, while Midi Amuser averages 4.8 from 6 ratings.
Do FreEWI or Midi Amuser have ads?
Neither FreEWI nor Midi Amuser shows ads.
Which is updated more often, FreEWI or Midi Amuser?
FreEWI ships an update every 11 months, and Midi Amuser every 5 weeks. Most recently, FreEWI was updated on October 9, 2026 and Midi Amuser on October 24, 2026.

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