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TenthBit Inc. was founded in 2012, in sunny California. The founders, having been disconnected from their significant others while being a part of the YC program, found that they were repurposing many other services to talk to their partners. After many frustrating skype calls, and international text messages, they decided to build Couple. The app now has over two million downloads on iOS and Android and has helped couples send over a billion messages to each other.

Anyone can create their own beautiful catalog pages of products that they want to editorialize and recommend to others. Authors earn a portion of the referral bonus for products sold. Shut down in 2007.