This is the front screen.

InstaDM

You can look through your Instagram contacts to see who is on the service.

InstaDM

This is how you add friends.

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Or do a quick search.

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Invite someone.

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You can even add an entire group.

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You can start chatting in under a minute.

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It looks a lot like the iPhone's text messaging app.

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Conversations are all saved, so you can go back to them.

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To keep the app going, donations are accepted. In 6 days, there have been 865 in-app donations made since launch. From the looks of it, Ne-Yo and T-Pain have chipped in.

InstaDM

Now, take a look though a bunch of other hot startups...

Youtube video of 99Dresses

The 25 Hot Silicon Valley Startups You Need To Watch →