I built a Mac app (https://revryte.com) that replaces the ChatGPT copy-paste loop. It transforms text in place or inserts smart snippets in any app using AI.
Strong +1 - the book is also very concise and full of practical advice. I wish we've put the learnings into practice even earlier in the process of building fragmentapp.io
A spreadsheet-based approach to food I've been using with my partner for years, turned into an app. Track only calories & protein, look at weeks instead of days, eat healthy/don't eat CRAP (calorie-rich and processed foods).
W nutrition planning app that focuses on looking at an entire week, instead of daily goals. It's based on a spreadsheet-system I've been using for a while: the idea is that you can have a pizza night and eat a little bit more on Friday by recovering from the extra calories throughout the rest of the week.