r/startups • u/7331senb • 2h ago
I will not promote 10 growth lessons from scaling to 4M users (with $0) & running 100+ experiments: I will not promote
I'm the founder of TryHackMe, the biggest online cyber edtech platform. Its scaled to over 4 million users, with 1.5M joining in the last year alone - all without paid ads!
We’ve built out 4 growth squads, run 100+ experiments, and made plenty of mistakes. I wanted to share 10 growth lessons that stood out:
1. Quality > Quantity
Focus on “gold users” who love your product, not just boosting signups. Vanity metrics will trick you.
2. Not every engineer fits a growth squad
Growth work is fast, hacky, and iterative. The wrong engineer can slow everything down.
3. You can run experiments without engineers
Validate with tools like Typeform, HotJar, or Figma before touching code.
4. Make data self-serve
Don’t bottleneck on data teams. PMs should know how to dig into product analytics on their own.
5. Share lessons (even failed ones)
If only the growth squad learns from an experiment, you’ve missed a big opportunity. Share widely.
6. Let the whole company pitch growth ideas
Support, content, and sales teams all talk to users — their insights are gold.
7. Time box everything
Ask “what does a 2-day version of this look like?” Speed matters way more than you think.
8. There’s no such thing as a failed experiment
Learning what doesn’t work is still valuable. Neutral results are worse than negative ones.
9. Balance quick wins with big bets
Small optimizations are great, but you need riskier bets to unlock big step-change growth.
10. Whole squad needs to be bought in
Not just the PM. Engineers and designers should understand the goal, join user interviews, and care about the result.
Happy to discuss any of the points above!
I will not promote