If I use an CC by Attribution 4.0 image in my application, am I required to make my app CC-BY 4.0 too?
<p>I want to use image that was licensed as CC by Attribution 4.0 in my application. Is there any requirements about licensing my whole application? Should it be CC-BY 4.0 too, or can I use different license?</p>

<p>You can choose any (or no) license for your application. You just have to attribute the image correctly.</p>

<p>If <a href="https://creativecommons.org/licenses/by/4.0/" rel="nofollow noreferrer">CC BY 4.0</a> were a <a href="https://en.wikipedia.org/wiki/Copyleft" rel="nofollow noreferrer">copyleft</a> license, you would have to license your application under this (or a compatible) license, too. But CC BY 4.0 isn’t a copyleft license. Creative Common’s copyleft licenses all have "SA" (which stands for "ShareAlike") in their name (e.g., <a href="https://creativecommons.org/licenses/by-sa/4.0/" rel="nofollow noreferrer">CC BY-SA 4.0</a>).</p>

creative-commons