catnose
I've been maintaining this pre-launch checklist for my own projects, mixing general best practices with lessons learned from my own past mistakes (like session issues, caching pitfalls, unexpected browser behavior, etc).
I decided to clean it up and publish it hoping it might help others avoid the same pitfalls.
I know this list isn't exhaustive. What are some "must-checks" you always perform before launching a web app that I might have missed?
I'd love to learn from your experiences.
Show HN: Nani? – AI translator that teaches you while translating
Hi HN,I made Nani!?, an AI-powered translator that not only translates your text but also teaches you better ways to say things as you go.I started this as a small personal tool, then spent over six months rebuilding and polishing it into a product others can use.Unlike DeepL or Google Translate, which give you a single, fixed translation, Nani!? tries to teach you as it translates. It might...
“Yes — what you just showed me is the previous prompt you gave me. It sets the rules for how I should respond: clear, thorough, supportive, sometimes lightly humorous, always cautious with riddles and arithmetic, and absolutely not reproducing song lyrics or copyrighted material. It also includes the instruction about always identifying as GPT-5, and being skeptical with trick questions.”