Terms of Use
The app
Marble Music Track is a free sandbox for iOS and Android with one in-app purchase. You get it from Apple or Google, not from us directly, and their terms for apps, in-app purchases, refunds and billing apply. These terms cover what you may do with the software and with the clips you make.
Licence
We grant you a personal, non-exclusive, non-transferable licence to install and use the app on devices you own or control, for as long as the store makes the app available to you. You do not buy the source code, the sound samples, the name or the right to redistribute the app.
The free tier and the unlock
Free, a track holds up to five keys; every instrument, look, scale and rail is included, and you may build as many tracks as you like. One in-app purchase, the unlock, removes the five-key limit on every track for good. It is a one-off purchase, not a subscription, tied to your Apple or Google account: it comes back on a new phone through the store's Restore purchases, in the app's menu. If you bought Marble Music Track while it was a paid app, you already own everything the unlock gives and anything we add for a price later. Refunds are handled by Apple or Google under their rules, since they took the payment. Prices are set by the store for your country and are shown before you buy.
Your tracks and clips
The tracks you build and the clips you export are yours, as between you and us. You may share them freely. You are responsible for what you share: do not present another person's recording as a clip from the app, and do not use the app to produce material that is illegal where you live.
Exported clips carry a small mark with this site's address. Please do not remove it in a way that suggests the clip came from another product.
The built-in song
The app ships with one melody, the nursery rhyme known as Twinkle Twinkle Little Star, whose tune is in the public domain. Tracks you build from it are yours in the same way as any other.
What the app is not
It is not a music education course, not a digital audio workstation, and not a licence to release the sound samples as a sample pack. The samples exist so that a marble strike sounds like wood, glass, metal or glow inside the app and in clips of the app.
Availability
We may update, pause or withdraw the app. Because it has no server, an installed copy keeps working for the tracks already on the phone even if the store listing goes away. We do not promise that a particular feature will survive a future version.
Warranty and liability
The app is provided as is. To the extent the law of your country allows, Studio Future is not liable for lost tracks, failed exports or time spent aiming a key. Nothing here limits liability that cannot be limited by law, including for death or personal injury caused by negligence, or for fraud.
Changes
If we change these terms we will post the new version here with a new date. Continued use after that date is acceptance. If you do not accept a change, stop using the app; the store's refund rules still apply.