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67 tools with what they cost, when you actually need them, and who should skip them.
67 tools · prices · updated 23 September 2026Prompts
The exact prompts that keep an AI agent on the change you asked for — and make it prove its work.
20 free, with the reasoning under each oneComparisons
Side by side, with a verdict and a line on who should skip all of them.
8 comparisonsGuides
The arithmetic in public: hourly rates, margins after advertising, what a subscription has to earn.
58 long reads with the numbers shownFree companion
The Short Version
Every conclusion from all eight playbooks — 97 chapters, 46 pages, condensed to what you would write on a card. Free, and nothing to cancel.
Prompts people take first
Free, one question per page — what to paste, when, and why it is worded that way.
The prompt that stops an AI agent touching everything
How do you stop an AI coding agent from refactoring or changing files you did not ask it to?
The prompt that catches a package your AI invented
How do you check whether an AI coding agent invented a package that does not exist?
The prompt that stops a builder making the wrong app
How do you describe an app to an AI builder so it builds what you actually wanted?
Working numbers, not opinions
What the work actually pays per hour, what a product nets after advertising, and which subscriptions earn their place.
Which subscriptions should you actually cancel?
Not the expensive ones. The audit takes twenty minutes, works from your bank statement rather than your memory, and the first pass usually removes three.
Build it, buy it, or skip it?
Three questions settle almost every tool decision, and the answer is 'skip' more often than any comparison article can tell you — including the ones here.
When should you stop asking and read the code?
Two failed attempts at the same fix is the signal. After that you are not debugging, you are sampling — and the sampling gets more expensive every round.
Everything, one price
Or take the whole library
All 10 of them — every playbook and every pack, plus what gets added for the next twelve months. Separately that is €178.
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Who writes this
One person, no team, no sponsorships. The site earns from affiliate commissions and from the playbooks — and 27 of the 67 tools on the list pay nothing, including the four I use every day. How that works, in full →