# Additional Permissions under GNU GPL version 3, Section 7

Materializr is licensed under the GNU General Public License, version 3
(see [LICENSE](LICENSE)). As permitted by section 7 of the GPLv3, the
copyright holders of Materializr grant the following additional
permissions. These permissions apply to Materializr as a whole, including
contributions merged into this repository (see "Contributor consent"
below).

## 1. App-store distribution

Notwithstanding anything to the contrary in the GPLv3, you may convey
Materializr, and covered works based on it, in object-code form through
digital application distribution platforms operated by third parties —
including but not limited to the Apple App Store, the Google Play Store,
and comparable platforms — even where the terms of service, usage rules,
or technical measures of such a platform would otherwise conflict with
the conditions of the GPLv3 (for example, restrictions on redistribution
by users, cryptographic signing requirements, or the absence of
Installation Information as defined in GPLv3 section 6), provided that:

1. the complete Corresponding Source of the conveyed version remains
   publicly available free of charge under the GPLv3, at
   <https://github.com/materializr-cad/materializr> or a successor
   location identified within the conveyed work; and
2. the conveyed work identifies where that source can be obtained (for
   example, in its About screen or store listing); and
3. you do not yourself impose any further restrictions on the rights
   granted by the GPLv3 beyond those unavoidably imposed by the platform
   operator's terms.

## 2. Linking with platform SDKs

If you modify Materializr, or any covered work based on it, by linking or
combining it with platform frameworks or SDKs that are required to build
or run it on a given operating system — including but not limited to the
Apple iOS/macOS SDKs and the Android SDK and NDK — containing parts
covered by the terms of the platform vendor's license, the copyright
holders of Materializr grant you additional permission to convey the
resulting work.

## Scope and removal

These additional permissions are granted under GPLv3 section 7. As that
section provides, when you convey a copy of a covered work you may at
your option remove these additional permissions from your copy; you may
not add further restrictions.

Charging for copies, and accepting voluntary donations or tips through a
platform's payment mechanism, is already permitted by the GPLv3 itself
and requires no additional permission — provided the Corresponding
Source remains available as the license requires.

## Contributor consent

Contributions offered to this repository are accepted under the GPLv3
together with these additional permissions. By submitting a contribution
you agree that it is licensed accordingly. Contributors retain copyright
in their contributions.

## Historical note

Releases of Materializr through version 0.9.7.1 were published under the
MIT License; code first published in those releases also remains
available under the MIT License.