License agreement
Last updated November 12, 2026
This agreement
This agreement is between you and AudioMSTR, and covers MasterTrack for Mac, Windows and MPC. By installing or using MasterTrack, you agree to it. MasterTrack for iPhone and iPad comes from the App Store under Apple's standard license agreement.
Your license
When you buy MasterTrack, you get a perpetual, non-exclusive license to use the version you bought:
- on up to 3 computers you own or control at the same time, Mac or Windows in any mix, and
- MasterTrack for MPC on MPC hardware you own.
You can use it for personal and commercial music work.
The trial
The free trial lets you use MasterTrack for 10 days to decide whether to buy it. Each computer gets one trial.
Your music
Audio you make with MasterTrack is yours. We claim no rights to it, and you owe us no royalties.
Activation
MasterTrack has to be activated, online or with offline activation, and checks its license now and then when it's online. You can move activations between computers from MasterTrack or from your account.
What you can't do
- Share your license or account with other people.
- Sell, rent, lend, sublicense or give away MasterTrack or your license without our written permission.
- Copy or hand out the installers, except to install MasterTrack on your own computers and MPCs.
- Reverse engineer, decompile or modify MasterTrack, except where the law lets you regardless of this agreement.
- Get around, disable or tamper with activation or license checks.
Updates
We may release updates. Updates we give you for the version you own are covered by this agreement. We don't promise any particular update or upgrade.
Ownership
AudioMSTR owns MasterTrack and its name, logo and artwork. This agreement gives you a license to use MasterTrack, not ownership of it.
No warranty
MasterTrack is provided as is. As far as the law allows, we give no warranties beyond what this agreement says, including that it suits a particular purpose. The free trial is there so you can check that it works for you.
Limits on liability
As far as the law allows, AudioMSTR isn't liable for indirect, incidental or consequential damages, such as lost data or lost profits, and our total liability is limited to what you paid for MasterTrack.
Ending the license
Your license ends if you break this agreement. You must then stop using MasterTrack and delete it. A license that's refunded or charged back is deactivated.
Governing law
This agreement is governed by the laws of the State of Ohio, United States. If you're a consumer, you keep any rights the law where you live gives you.
Contact
Questions about this agreement go to support@audiomstr.com.