Locket started as a birthday gift for one person — and became one of the most downloaded consumer apps in the world. In this episode, you’ll learn:
How a private project between two people turned into a global product.
Why the first TikTok video going viral wasn’t just luck
The surprising factor that kept user growth consistent beyond the spike
How to turn authentic UGC into a repeatable growth engine
The retention metric that convinced them they had a business
Why onboarding might not matter as much as you think (in the early days)
The team structure that powers their in-house content machine
How to decide when to kill a feature — even if it’s “working”
The mental model they use to decide what’s worth focusing on and the early signal that proved Locket had real staying power
This is a masterclass in building a consumer app that people actually love — from finding early product-market fit to sustaining virality and keeping retention strong long after launch.
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About Locket
Locket is a photo-sharing widget that lets you send pictures directly to friends’ home screens in real time. It turns everyday moments into a personal, instant connection without the noise of traditional social media.
About the podcast
"May I Have Your Retention Please?" is a podcast where we break down how the best consumer apps grow, retain, and delight their users. Each episode features tactical, no-fluff conversations with founders and builders who’ve done it.
About the host
Saba Karim is a founder-turned-investor with a global network built from years of backing and advising startups. A seasoned public speaker and now a founder again, he leverages his investing experience and connections to build and grow products that people genuinely love.
