i have built an Android application in Kotlin and used various libraries including androidx.camera, com.google.android.gms, info.debatty, androidx.core, and androidx.appcompat, among others.
My concern is whether these libraries are open source and royalty-free or if I may receive a payment request from Google or someone else for their use.
I cannot remove the application from a user's smartphone, so i need confirmation of licenses and royalties before publishing it on the Play Store.
I've listed the complete list of licenses for third-party dependencies from my app using the OSS Licenses plugin (https://johncodeos.com/how-to-list-third-party-dependencies-licenses-in-your-android-app/). However, when I checked the "Kotlin" library using this plugin, it returned a mix of incompatible NPL and GPL licenses, and I do not understand why.
Here are the libraries used in my application:
implementation "androidx.camera:camera-core:${camerax_version}"
implementation "androidx.camera:camera-camera2:${camerax_version}"
implementation "androidx.camera:camera-lifecycle:${camerax_version}"
implementation "androidx.camera:camera-video:${camerax_version}"
implementation "androidx.camera:camera-view:${camerax_version}"
implementation "androidx.camera:camera-extensions:${camerax_version}"
implementation 'androidx.core:core-ktx:1.10.0'
implementation 'androidx.appcompat:appcompat:1.6.1'
implementation 'com.google.android.material:material:1.8.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.5'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
//Add Text Recognition Google ML Library
implementation 'com.google.android.gms:play-services-mlkit-text-recognition:18.0.2'
implementation 'com.google.android.gms:play-services-mlkit-text-recognition-common:18.0.0'
implementation("info.debatty:java-string-similarity:2.0.0")
And here are all the licenses for third-party dependencies:
https://opensource.org/license/mit/ https://www.apache.org/licenses/LICENSE-2.0.txt https://developer.android.com/studio/terms https://www.apache.org/licenses/LICENSE-2.0 https://github.com/mojohaus/animal-sniffer/blob/master/LICENSE https://chromium.googlesource.com/libyuv/libyuv/+/refs/heads/main/README.chromium https://github.com/typetools/checker-framework/blob/master/LICENSE.txt https://github.com/google/dagger/blob/master/LICENSE.txt https://github.com/google/j2objc/blob/master/LICENSE https://github.com/amaembo/jsr-305/blob/master/ri/LICENSE https://github.com/google/jsinterop-annotations/blob/master/LICENSE
KOTLIN LIBRARIE THAT EXTRACT ALL THIS LICENSE - START
https://github.com/JetBrains/kotlin/blob/master/license/LICENSE.txt https://github.com/JetBrains/intellij-deps-trove4j/blob/master/LICENSE.txt https://www-archive.mozilla.org/mpl/npl-1.1 https://www.mozilla.org/en-US/MPL/1.1/ https://www.mozilla.org/en-US/MPL/2.0/ https://www.gnu.org/licenses/old-licenses/gpl-2.0.html https://github.com/stephengold/asm/blob/master/LICENSE https://www.boost.org/LICENSE_1_0.txt https://www.eclipse.org/legal/epl-v10.html
KOTLIN LIBRARIE THAT EXTRACT ALL THIS LICENSE - END
https://developers.google.com/ml-kit/terms https://developers.google.com/terms https://developer.android.com/studio/terms.html
Thank you! Massimo
This is the answer to the Question and this by the polices of each GitHub and Google Developer..
GitHub Public repositories on GitHub are often used to share open source software. For your repository to truly be open source, you'll need to license it so that others are free to use, change, and distribute the software.
Google Developer Subject to the terms of the License Agreement, Google grants you a limited, worldwide, royalty-free, non-assignable, non-exclusive, and non-sublicensable license to use the SDK solely to develop applications for compatible implementations of Android...... So anything from Google you don't need a license
So therefore you don't need to retain a licenses. If the dependency is not available for open source or is public for use, then you would have to purchase it retain a licensing use for commercial.
So anything from GitHub or Google Developer is free to use for commercial or personal use without restrictions.