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ChordWeaver is a musical composition aid based on modern 5-part tonal harmony used extensively in symphonic music, film scores, jazz chord changes, contemporary songwriting, game soundtracks and electronic/synthesizer compositions with real time audio feedback.

ChordWeaver extensively uses techniques like altered chords (or unresolved appogiaturas), parallel ninths, giant steps, tritone substitutions, bi-tonal ambiguity. Although the app includes the traditional I, IV, II, V, I progressions, it offers multiple alternatives to the obvious.

Luckily, you do not have to know the theory behind altered chords, tritone substitutions and these other techniques, in order to use them. ChordWeaver does it for you. Just listen, make your choice and compose away.

Here is how ChordWeaver efficiently guides you through the composition process. You choose your starting chord, and ChordWeaver instantly shows you and lets you listen to multiple resolutions to that chord, traditional ones and more creative, unusual ones. With each subsequent chord choice, the process is repeated, There is no longer a need to spend hours at the piano or keyboard trying to find the right harmonies for your composition.
For some composers ChordWeaver will provide a fast, easy way to work with modern harmony. For other composers it offers a whole new world of possibilities and variations on traditional progressions. For the seasoned pro, it is a huge time saver.

This type of harmonic language was first firmly established by composers like Claude Debussy, Maurice Ravel, Sergej Prokofiev, etc. in the classical domain, and later adopted by jazz greats like John Coltrane, Miles Davis, Dizzie Gillespie, Charlie Parker, etc., before gaining enormous popularity among film composers, pop artists, songwriters, and new age musicians.

ChordWeaver seamlessly guides you to multiple possible chord options (some you will be familiar with and others you will not have considered), lets you listen to your work in progress, offers the option to transpose up or down and allows you to save your final product as a .chords file or export it as a .mid file.

These chord options in ChordWeaver are the result of decades of studying the scores of the masters in various genres. They reflect the actual use of these chord progressions and resolutions by these composers and are not simply based on purely theoretical considerations.

What’s New

Version 4.0.1

Updated screenshots

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

AndreXuxu ,

Fantastic and Unique

This is a fantastic app for musical composition. You simply pick the chord that you like, and the app automatically suggests a number of musically compatible chords to follow, based on theory and decades of analysis of actual composers. The creation process is extremely quick, and the results are great even for someone with little formal musical education.

There are short and very helpful tutorials on the developer's website, which I highly recommend if you're in doubt about this purchase.

This is a lifetime work of its developer and it shows. Highly recommended.

MparkeLux ,

Great for songwriters

I've been using ChordWeaver for a couple of weeks now to help with the harmonization of my song melodies, and I've found it to be wonderfully helpful. I can try out all the various harmonies and choose the one that I love the most, and its easy! No more hours at the keyboard searching for just the right one. Now it's only a finger tap away. And so easily downloads midi files to my protools light for further arrangement or recording. Love it!

App Privacy

The developer, Jeannot Welter, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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