Lenny Distilled

Meet users where they already behave

Growth → Retention & Engagement

We send two notifications related to your core streak each day, the first is a practice reminder, we send it 23 and a half hours after you practice the day before.

Jackson Shuttleworth Behind the product: Duolingo streaks
Supporting

Because people care about their streak, that notification reminding them, hey, come back and... People see this by and large as a positive notification and not a negative notification.

Jackson Shuttleworth Behind the product: Duolingo streaks
Supporting

So what can we do with that information? We can then say, 'The seller put it on sale. You should come back and check it out. This is selling out. There's only one of this item left. You showed some intent, you might want to come back and get it.'

Tim Holley Inside Etsy's product, growth, and marketplace evolution