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Ad test budget setter
Paste your target cost per sale. Get a daily test budget, a spend limit per ad and a rule for reading it.
Ad test budget setter is a free AI prompt for the job "Plan what ads to test". Give the instructions to an AI assistant that supports the required files and tools, then review its output.
Free · No account · Made by AI Blocks · Level: beginner · Thinking: low
What it does
Most test budgets are guessed. Ads get cut after one bad day, or left running long after they should have been cut. Either way you learn little and spend too much. This prompt works from your own target cost per sale. It shows the sum for a daily test budget, sets a spend limit for each ad before you judge it, and picks a read window with a reason. The rules come from public talks by media buyers and are starting points, not platform rules. It also tells you how many ads a new idea needs, since only a few in a hundred win, and what to do with winners and losers.
You give it
- Your target cost per sale
- Sales needed and test days (optional)
- Order value and orders a week (optional)
- Your results (optional)
You get
- A daily test budget with the sum shown
- A spend limit per ad in dollars
- A read window with a reason
- A rule for winners and losers
Use it when
- You are about to start testing ads and do not know how much to spend.
- You keep cutting ads too early.
- You need a clear rule you can follow without second-guessing.
How to use it
- Copy the prompt and paste it into a chat with Claude, ChatGPT or Gemini, with your details under it.
- Under the prompt, write your target cost per sale and, if you know them, sales needed and days.
- Check the sum for the daily budget with a calculator.
- Write the spend limit down before you launch, so you do not change it later.