Otterly.ai is one of the most popular self-serve entry points to AI-visibility monitoring — affordable ($29/mo), easy to start, and used by tens of thousands. It tracks how your brand and prompts perform across AI search over time.
meraGEO is the closest in spirit (cheap, self-serve, no sales call) but a different model: a free no-signup scan plus a one-time $19 fix report. Where Otterly keeps monitoring monthly, meraGEO gives you a snapshot and the specific changes to make.