Bernn shows your AWS, Anthropic, and OpenAI spend in one app, as a single number. Set a budget and get a notification before you cross it, plus a warning when your daily spend suddenly spikes. I built it after an OpenAI bill of $90+ and an Anthropic bill of $250+ caught me off guard. It's read-only, so it can never change or spend anything on your accounts. Free to start, for solo developers and indie hackers who want to catch surprise bills early. Now live on the App Store.