Insight
Jiang: Spending three hours vibe-coding a prototype compounds significantly over time
“Sometimes you can just take a first step to getting started, whether it is three hours of vibe coding a prototype just to test something with users or writing your first like, Hey, I'm building this app and this is day one. That's all you really have to do som…”
Insight
Jiang: Self-improvement apps must guide user actions, not just track metrics
“It's the same kind of concept of, like, you know, you have to, like, capture not just the tracking and the numbers part. It's like there's so much more, so many more steps to ultimately getting to you taking an action and then seeing the results of the action.”
Insight
Jiang: Apply the 'Rule of Six' for optimal app prototype user testing
“So I had this thing I call a rule of six, which means talk to six people that you think is in your ideal customer profile. Two less is like, you don't have enough sample size, too many. It's like, you just don't move fast enough because like, you know, people …”
Disclosure
Jiang: Peek combines Claude for reasoning with Gemini for fast tool calling
“As for the LLM side, we actually string together a combination of, ah, Gemini, as well as Claude, ah, depending on like the, I guess the function, but a lot of the initial insights, like, These kind of I would say like more detailed insights. We use three seve…”
Insight
Jiang: Founders building in public must rely on replies before standalone posts
“When you're, you know, early on, like, reply a lot, and then at some point, your post will carry you more”
Insight
Jiang: Human taste remains essential because 90% of AI-generated ideas are terrible
“I mean, the one thing you still have to have is you have to have taste. I mean, they'll give you a bunch of ideas, like nine out of 10 are shit. You have to decide, like, which one, like, you know, catches people's attention, is visually suitable, and can rela…”
Disclosure
Jiang: Peek's initial prototype was coded using Cursor and v0
“I basically used cursor and V zero to code this out.”
Disclosure
Jiang: Peek uses a vector database to store thousands of user signals
“We have a vector database that actually stores memory from the user. So we have like actually thousands of signals that we save down, right?”
Disclosure
Jiang: Peek's cross-platform stack relies on TypeScript, React Native, and Expo
“So for like the front end and the back end, it's been in TypeScript. And then for the mobile app because we want it to be like more platform agnostic across, you know, iOS as well as Android use React Native and using Expo for that.”
Assertion Not checkable as stated
Jiang: Peek users engage 7x more frequently than traditional desktop dashboard users
“We're already seeing how people are using our app nearly seven times more frequently than like your desktop dashboard app.”
Assertion Not checkable as stated
Jiang: Peek doubled week-three retention using behavioral and onboarding reminder notifications
“We did two things that actually shot our week three retention up from that, ah, from like, 13% to essentially, like, 28% in, like, a short period. We improved onboarding completion, literally just asking people, hey, it's been three days, just connect your ban…”
Disclosure
Jiang: The Peek mobile app took 1.5 months to build before launch
“So we basically took this and spent about One and a half months actually building it out before we launched in the app store.”
Disclosure
Jiang: Peek maintains direct DM channels with 50 power users for feedback
“I interact a lot with people on replies, DMs, probably have like at least 50 people, like in some kind of direct line of communication that just, you know, sends me this stuff while we're building peak in public.”
