Most companies pay for AI tools nobody opens. The average small team carries four or five subscriptions per person and half overlap. An AI tool stack audit app is the fix. - Subscription discovery: the app should find tools from expense data or SSO, not ask you to type them in by hand. - Real usage data: logins are vanity. Look for active usage, documents created, queries run. That is what tells you which seat to cancel. - Overlap detection: you want it to notice you pay for two meeting summarizers and say so out loud. - Free tiers usually give the inventory free and charge for analytics. The inventory alone is worth it. Most teams cannot name everything they pay for. Our database tracks AI tools by profession and pricing tier, and PrivateLLM deploy sets up a private LLM on AWS for $50 plus usage for teams consolidating onto their own stack.