How to Track AI Spending as a Solo Developer

AI tool subscriptions add up fast, I tracked mine and found 353 EUR/month across 21 tools Split every tool into business-deductible vs personal to cut your effective cost by 40% Three rules: audit quarterly, kill underused tools immediately, consolidate overlapping ones A simple spreadsheet beats every budgeting app if you actually maintain it monthly I spent 353 EUR per month on AI and dev tools before I sat down and actually counted. Twenty-one active subscriptions across design, development, infrastructure, and AI. Some I used daily. Some I had not opened in weeks. The total surprised me because no single tool felt expensive. 20 EUR here, 15 EUR there. It adds up quietly. If you are a solo developer or indie creator running an AI-powered workflow, you are probably in the same boat. Here is how I track, categorize, and optimize my tool spending. The Real Cost of Running an AI-Powered Studio My current monthly stack breaks down like this: AI Tools (60 EUR/month): Claude Pro at 20 EUR,