Bro · B2C · AI companion app
Pick one everyday moment, texting, as the way into a big AI companion idea
Texting wedge became the winning format; lock-screen versions also did well
What they did
What happened
- Stage
- pre-launch validation
In their words
Roger Chen - How I Built the #1 App on The App Store (Twice)
Joseph ChoiSo, yeah, you're trying to take up this lock screen real estate, but you need to provide value. Um, and you're doing it in this like kind of light-hearted way. But you hit number one on the App Store, all right? Like, how did this happen?
Roger ChenSo, it was a lot of TikTok, honestly. So, the idea here is uh we want to position like, like I said before, like Bro is like always there, like a companion that's like, that's like really with you with you. Like whatever you're doing, like Bro is always there to give you help, to chat with you about it. You see like that's a very ambitious vision, right? And the problem with that is that it's not specific. So, even though we found like the whole vision like just super, super exciting, we still need to find a wedge, like a concrete wedge, like a concrete scenario in people's lives. And the we- and the wedge we found, like, is like, obviously, number one is just texting. So, we focused on texting first, and then uh a lot of the dating app stuff, and then finally some other like miscellaneous stuff like you you go through with your life.
Joseph ChoiWait, so is this the is this the main format that you're doing? Kind of like the face reaction and then demo of the product?
Joseph ChoiI see. And did you basically invalidate the lock screen concept by putting those prototypes out first, and then you it didn't do as well on the ads?
Roger ChenActually no, it's uh those do pretty well, too. Like that's actually where we got the hunch that um this proactive caring thing could really work. The reason why we decide to go with this one is just that that one has uh had an like like in some of the demos, like in some of the steps once it had like outdated designs, and we don't want to confuse the like confuse people.
Joseph ChoiQuick question. Is this picture-in-picture? Like, is this is this a video on the iPhone, or like how do you actually get the the little rectangle on on top?
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More from this episode
- Film a clickable mock-up and put TikTok ad money behind it before building7.9M views; proved the concept and found a video format to scale
- Post lots of TikToks: a real person in a texting mishap, then the app helpingVery top-heavy: a few videos hit 2-3M views; the best one was a surprise
- Find TikTok creators through topic hashtags like #relationship and email them to post~50 creators at peak, down to 10-20; hits took 2-3 months; hit #1 in US
- Add a group photo countdown to video calls that people share to StoriesCredited with more sharing and pulling in left-out friends; #1 in UK, Italy, Germany 3 months later
- Track how many new users get 5 friends on day one, then build for it60% vs 20% hit 5 friends in Israel vs elsewhere; D90 25-30%, about double
- Invite friends to a 1-minute video catch-up at a random minute each night
- Carry a tappable fake of the app and use it daily before codingFounder says it cut a lot of wasted engineering; no numbers
Tags: tiktok, wedge, use-case, creative-testing