3 tools you need before you launch your app all free, all change the game for indie hackers and solo founders launching in 2026. How to know if your app is actually working: Google Analytics shows you who's visiting and where they came from. Microsoft Clarity records every visitor's screen so you can watch session replays and find exactly where people rage-quit. Stripe's reports tell you which traffic source actually converts, what your real churn rate is, which pricing tier nobody picks. The hi

Google Apps Script開発入門

Multi-device conversation feature