10,000 downloads in under 7 days.

This social app hit #25 on the App Store on launch day with a 30K waitlist.

Inside the TikTok marketing playbook of this 26-year-old girl founder:

Imagine if iPhone Notes and Pinterest had a baby: that’s Ditto.

The app Lillie Sun co-founded at just 26. She first went viral 2 years ago…

…with this format. Then she had an idea:

Turn lists about anything into a shareable social piece + make an app for people to share them with anyone.

She made 40M views on her main account:

tt@belinda47585 (name & photo were changed 2d ago): 40 million views!!

1.3M in the past month only. And look at this:

She follows the founder of Sizzle, which went viral with a strategy I wrote about yesterday.

They clone each others viral formats:

Same hooks, same pace, same storyline…

1/ Founder story:

2/ If app X and app Y had a baby:

Ditto => Pinterest + iPhone notes

Sizzle => TikTok + Uber Eats/ Hello Fresh

That’s not just it.

Lillie realized started scaling beyond her founders account.

30 days before launch she hired 5 ambassadors who started posting immediately:

2 videos per day… from March 10th to April 5th, and then…

They stopped.

Each of them posted 60 videos => half a million views total. Waitlist reached 30,000 users and has been downloaded 10K+ times

It might have been a one-off organic campaign, or she might restart these creators later. It’s a pretty perfect app to push on TikTok.

Novelty + edge + targeting Gen Z girls = almost guarantee reach/views.