Instagram has updated its brand guidelines and have also sent emails to various app developers asking them to change the name of their products, Tech Crunch reported.

The popular photo-sharing application updated its policy to end any confusion among users as to other apps carrying "insta" or "gram" in the product's title. Instagram wishes to end any speculation that such apps are affiliated with its own product.

The following is an email sent to Luxogram, obtained by Tech Crunch.

We appreciate your interest in developing products that help people share with Instagram. While we encourage developers to build great apps with Instagram, we cannot allow other applications to look like they might be official Instagram applications or endorsed or sponsored by us.

As we hope you can appreciate, protection of its well-known trademarks is very important to Instagram. For example, it has always been against our guidelines to use a name that sounds or looks like "Instagram" or copies the look and feel of our application. Similarly, as we have clarified in the new guidelines, use of "INSTA" and "GRAM" for an application that works with Instagram is harmful to the Instagram brand. It is important that you develop your own distinctive branding for your applications, and use Instagram's trademarks only as specifically authorized under our policies.

Click here to read all of Instagram's do's and don'ts in its new brand guidelines.

Two of the main issues Instagram took up with Luxogram are the use of the camera logo and the "gram" part of the app's title, two benchmarks of its product. Many other app makers will also have to re-brand their products following the updates to Instagram's policies.

"All uses of the Instagram brand need to be in accordance with our branding guidelines," an Instagram spokeswoman said in a statement.

The time period for other companies to change the branding of their products has not been defined and Instagram has also not stated if it would take legal action against a company not willing to comply. Tech Crunch reported Luxogram's creator will not make all of the recommended changes and may shut down the app all together. Others may do the same.