There’s a social media app I like using more than Instagram or TikTok — and it’s attracted serious investor interest.

The app, called Retro, is an Instagram alternative for sharing photos and videos with close friends or family.

The startup behind the app, Lone Palm Labs, has raised at least $21 million in venture capital funding, according to recent financial filings viewed by Business Insider. On the startup’s website, the company lists investors such as Josh Kushner’s Thrive Capital, Scribble Ventures, Imaginary Ventures, and Uncommon Projects, as well as angels including Figma CEO Dylan Field.

Retro did not respond to requests for comment.

Re…