<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body style='font-size: 10pt; font-family: Verdana,Geneva,sans-serif'>
<p>I'm changing my mind. Again, what I'm actually using is a derived work, so it's about the licence in that derived work.</p>
<p>The reason I'm changing my mind is I've had some feedback that if I'm going to compete with Telegram or Signal, given they're both open source, users are more likely to trust mine if it's open source too.</p>
<div id="signature"> </div>
<p><br /></p>
<p id="reply-intro">On 2021-08-03 5:33 am, nurupo wrote:</p>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0">
<div class="pre" style="margin: 0; padding: 0; font-family: monospace">GPL allows you to sell copies of the software <a href="https://www.gnu.org/licenses/gpl-faq.en.html#DoesTheGPLAllowMoney" target="_blank" rel="noopener noreferrer">https://www.gnu.org/licenses/gpl-faq.en.html#DoesTheGPLAllowMoney</a> and charge a fee to download the software <a href="https://www.gnu.org/licenses/gpl-faq.en.html#DoesTheGPLAllowDownloadFee" target="_blank" rel="noopener noreferrer">https://www.gnu.org/licenses/gpl-faq.en.html#DoesTheGPLAllowDownloadFee</a>. Charging a fee to disable in-app ads or unlock some functionality should be fine too.<br /><br />Just note that under the GPL, you will have to provide the full source code and build/install instructions of the app to the users, so the users would be free to modify the source code of your app to remove the ads, unlock all the functionality and publish this modified version on the Play Store under a different name without violating any copyright laws as GPL allows for that. Or instead of making a fully unlocked copy of your app, they could make a copy with all the ad and unlock revenue going to them instead of you. In any case though, they would have to comply with the GPL - include copyright and license statements, provide their users with their modified source code and installation instructions, etc.<br /><br />If you are having such a simple question, then you should really read the license text or perhaps consult a lawyer if you are having trouble understandingthe license. Again, the earlier disclaimer applies to everything I say, that I'm not a lawyer and what I'm saying is not a legal advice, it's just my understanding of GPL to the best of my knowledge, which might not necessarily be correct.<br /><br /><span style="white-space: nowrap;">---</span><br /><span style="white-space: nowrap;">Regards,</span><br />nurupo<br /><br /><span style="white-space: nowrap;">On 2021-08-02 23:12, <a href="mailto:gary@mohan.net">gary@mohan.net</a> wrote:</span>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"><span style="white-space: nowrap;">Could open sourcing it get me money?</span></blockquote>
</div>
</blockquote>
</body></html>