Flash Chord is free and it will always be free. It's free to use ("free as in beer") and it's free to use ("free as in freedom"). What does that mean? It means that you won't ever pay a dime to use Flash Chord and it's an open source tool, so you're free to see what Flash Chord is doing and how it's being done.
That being said, Flash Chord is not "free" in the sense that it takes time to build and maintain. It also costs actual money to host and renew the domain each year, and while these costs are not a lot, everything adds up.
If you use Flash Chord, if you find it useful, and if you'd like to help support it, please consider making a donation. Any amount would be greatly appreciated. Even if you choose to not make a donation, your use of Flash Chord is still appreciated. :)
If a business would like to help sponsor Flash Chord, it would be greatly appreciated. :)
Thank you to the following people their kind and generous support of Flash Chord!