Privacy, policies & licenses

Your captures remain under your control. This policy explains on-device processing, system permissions, and transfers that may occur when you choose to share content or contact us.

These terms describe the conditions of using SparkleShot, responsibilities, and your rights. See the Software License for licensing and the Privacy Policy for personal-information handling.

This document distinguishes the license for SparkleShot’s own software, store-distribution rules, and third-party open-source rights. A right to use software is not a transfer of copyright.

MP3 export uses the separately supplied LAME encoding library. SparkleShot elects GNU Lesser General Public License version 2.1. The app includes the license, corresponding source, and build recipe.

You may modify, rebuild, and replace this library under its license, including reverse engineering needed to debug those modifications. Code signing and system execution rules remain managed by macOS.

Full GNU LGPL 2.1 license

Original English text follows

                  GNU LESSER GENERAL PUBLIC LICENSE
                       Version 2.1, February 1999

 Copyright (C) 1991, 1999 Free Software Foundation, Inc.
 <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

[This is the first released version of the Lesser GPL.  It also counts
 as the successor of the GNU Library Public License, version 2, hence
 the version number 2.1.]

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                     END OF TERMS AND CONDITIONS

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That's all there is to it!

The original LAME notice supplied with the app follows. It describes the component’s source, dynamic loading, and personal replacement rights. See Software License for the license of the application itself.

Original English text follows

# LAME MP3 encoder 4.0

SparkleShot uses the separately loaded LAME library for MP3 audio export.
Project: https://lame.sourceforge.io/
License: GNU Library General Public License v2 or later; see COPYING and LICENSE.
For this distribution SparkleShot elects GNU Lesser General Public License 2.1
under that grant; COPYING.LGPL-2.1 contains the elected terms.

The arm64 shared library is built from the unmodified official LAME 4.0 source.
Source: https://downloads.sourceforge.net/project/lame/lame/4.0/lame-4.0.tar.gz
Source SHA256: 3df5124d5ad3a98312ffd7ba6a9b36230e4f8a3e66d3ce0f425e336c32d216eb
The corresponding archive and exact build script are included alongside this notice.
Build: zsh build-lame.sh /absolute/path/to/a-new-build-directory
The build targets macOS 15, enables a shared arm64 encoder with stack protection,
and disables the command-line frontend, decoder and static library. The only
post-build change is its Mach-O install name, @rpath/libmp3lame.0.dylib.
SparkleShot uses CBR quality=4 to avoid the noise-shaping path described in
upstream issue 516; the user's bitrate, sample-rate and channel selections remain.

The library is separate and dynamically loaded. SparkleShot does not statically
link it or require a particular signed hash. Users may modify, rebuild and replace
it under LGPL 2.1, including reverse engineering needed to debug modifications.
See REBUILDING.txt for personal replacement and macOS code-signing considerations.

These files match the materials included with SparkleShot. Download the corresponding source, build script, and personal replacement guidance separately.

Original English text follows

LAME 4.0 source and personal replacement

This package includes lame-4.0.tar.gz, its upstream COPYING and LICENSE,
COPYING.LGPL-2.1, and build-lame.sh. SparkleShot elects LGPL 2.1 under the
upstream LGPL 2-or-later option. The source archive is unmodified.

With Xcode command-line tools available, build in a new, unused absolute path:
    zsh build-lame.sh /absolute/path/to/a-new-build-directory
The script verifies the source checksum, builds the shared arm64 encoder for
macOS 15+, and prints the resulting libmp3lame.0.dylib path. It does not clean
existing directories, modify your app, require Homebrew, or install software.
The original source produces compiler warnings with current Clang; the included
script does not hide them or apply undocumented source patches.

Work on your own copy of SparkleShot.app. The replaceable library is located at:
    SparkleShot.app/Contents/Frameworks/libmp3lame.0.dylib
The application uses LAME's public C encoding symbols through this path.
Keep these APIs ABI-compatible; a replacement is never downloaded or installed
by SparkleShot. The application's encoder uses CBR quality=4.

Changing a signed app invalidates its existing signature. For a personal local
copy you may sign your rebuilt library and modified app copy with your own
appropriate code-signing identity, preserving the app's sandbox and microphone
entitlements. macOS may request privacy permissions again for a new code identity.
Distribution under Apple's signature is not a right to reuse that signature.
No system protection needs to be disabled to exercise the LGPL rights.

Contact the developer listed in the app for questions about these materials.