what happens when you mix iPhone Notes + Pinterest — and turn it into a social app?
that’s the idea behind Ditto, a new list-sharing app that launched with:
– 🔥 10,000+ downloads in 7 days
– 🧾 30,000 users on waitlist
– 🏆 top #25 on the app store charts (day of launch)
– 📲 all from 30 days of organic TikTok content
the app:
🗂️ build lists of anything — places, recs, ideas
📤 share with friends or your whole feed
🧠 feels like “personal pinterest meets group chat curation”
🎯 positioned perfectly for Gen Z users who love organizing + oversharing
where it started:
the founder, Lillie Sun, had already built reach with a now-renamed TikTok account.
🎥 @belinda47585 (formerly under her name)
📈 40M+ lifetime views
📊 1.3M views in the month leading up to launch
her content formula?
→ “if X and Y had a baby” app explainer
→ “I built this app because…” founder storytelling
→ emotional text overlays + real phone screen demos
founder-style + viral cloning:
Lillie wasn’t building in isolation.
she followed other viral solo founders (like the one behind Sizzle) — and mirrored proven formats:
– relatable founder origin story
– quick visual concept explainer
– viral mashup tagline (e.g. “Pinterest + Notes = Ditto”)
and it worked.
30-day UGC sprint before launch:
she didn’t stop at personal content.
a month before launch, she hired 5 creators to act as pre-launch ambassadors.
🎥 2 videos a day
📆 from March 10 → April 5
📦 60 videos each
👀 500K+ views total
result?
→ app waitlist grew to 30K
→ app downloads passed 10K within a week
the campaign paused right after — unclear if it’s coming back, but it nailed the timing.
what made it viral:
✅ fresh app concept with emotional use cases
✅ low-friction content (filmed in iOS Notes style)
✅ strong visual storytelling
✅ soft but repeatable CTAs
and it didn’t require a product walkthrough. the concept sold itself.
what you can learn from this:
🧠 building for Gen Z?
→ combine novelty + simplicity + storytelling
→ your UI should look good in a TikTok scroll
🚀 solo founder with content roots?
→ build in public
→ tell the why
→ repeat the same format again and again
🎯 launching soon?
→ warm up creators 30 days out
→ test hooks, refine the angle, build soft pressure
→ UGC > ads — especially with emotional product angles
Ditto wasn’t built with a launch campaign.
it was built with 30-second TikToks and consistent founder presence.
and now it’s racing up the charts — all because one creator showed up early, tested a message, and scaled it at the right time.
