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Can I build a social media client
<p>If I wanted to build a Facebook app for my desktop and post it in the app store to show my potential employers, would I need any special permission? I've seem other Facebook client apps in the app store, did they have to get special permission? What if I chose to do other social media apps instead, would I need permission for Instagram?</p>

<p>Thanks!</p>

<p>After the initial registration process, there is no further permission required to use Facebook's API. If you reach 5M+ monthly active users/100M+ API calls per day/50M+ impressions per day, additional terms may apply.</p>

<p>As per the <a href="https://developers.facebook.com/policy/" rel="nofollow">Facebook Platform Policy</a>, you must meet several quality criteria:</p>

<ol>
<li>Your app must not receive too many negative reviews</li>
<li>You app must be stable and easily navigable</li>
<li>You may not alter their logo, imply partnership with Facebook, etc. as per their <a href="https://www.facebook.com/policies/ads/" rel="nofollow">Advertising Policy</a></li>
</ol>

<p>There are of course all the other rules of software that still apply (no using your client to distribute malware, etc.) but to answer your question, yes, you can build a social media client as long as it functions as intended and does not imply a relationship with the social media company.</p>
