I liked Raycast's iOS keyboard. Instead of using it, customizing it or paying for it, I rebuilt my own from scratch in a weekend. It runs on a Cloudflare worker with my own prompts that I can change in 10 seconds without shipping an update.
Three years ago this would have been a 3-month side project I'd abandon. Now it's a Saturday.
And it runs at a fraction of the cost too, thanks to OpenRouter and open-weight models. I'm not paying a subscription to use a feature. I built myself on infrastructure I already pay for.
Software is basically free to write now. The interesting question isn't "what should I buy" anymore. It's "what do I want this thing to do, and how fast can I have my own version."
The boundary between my code and someone else's code is dissolving. Hyper-personalized software is already here for the people who want it. We just don't leverage it yet.
Did you build anything for yourself this month that you could have just bought?