Trudy by Trevor Services
Paste the idea. Get a read, not a verdict.
Trudy reads a promotion idea against the Five Levers from The Shelf: which one is out of tune, the move that brings it into tune, and what the version that works would have to be true to run.
On screen in under a minute. No name, no email, no form to get through first.
What you get
- The lever board. Reward, Belief, Friction, Liability and Venue, each scored with a one-line reason in your own words.
- The lead job. Which job the build is really doing, and whether a second job is riding along for free or fighting it.
- The moves. For every lever out of tune, the specific change that brings it into tune. Trudy never says no to an idea; it names the version that works.
- The price list. What would have to be true for the ambitious version to be safe: caps, cover, gates, claim windows, the retailer ask.
- One benchmark. A sentence from the Australian Promotion Benchmarks 2026, sixty-three campaigns run on the Trevor platform, with the source on it.
- The permit line. If the mechanic and the states you name raise a permit question, you see it, with the state-by-state guide one click away. It never blocks the read.
How it works
- Describe the promotion in your own words. One box and the category. Four optional fields sharpen the read if you fill them.
- Read it on screen. Usually under a minute.
- Decide what happens next. Email yourself the full report, with the framework behind each lever and two or three versions of your idea that work. Or book the Promo Pressure-Test: one page, fixed price, no deck.
Why it reads the way it does
The read is the book’s thinking running on your brief. The Shelf is the promotional marketing book by Mark Alexander and Amelia Speechley, and the Five Levers are its diagnostic spine. A reader who then opens the book will recognise the tool, and a user of the tool will recognise the book.



