Free tool · Campaign Test Planner

How will I judge a change?

Get a short plan for testing one change, with a spending limit and one number to judge it by.

Have ready: the one change you want to try and the most you will spend.

Your plan

What you type in this tool stays in your browser.

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See an example

What you enter
What you enterValue
ChangeClearer form labels
How you compareBefore and after
Total spending limit for the test$500
What you get
What you getValue
PlanA before-and-after plan
Spending limit$500, recorded as your limit
What it does not doStop your ad spending or prove you ran a controlled A/B test

Use this example to see how it works. Then use your own numbers.

What this means

You now have a written plan to look back on. A before-and-after change can still come from the season, the people who saw it or other changes, so treat a difference as a clue, not proof.

Not sure what your result means? Talk to us →

Details: what this tool can’t do, and how we handle your information

What it can’t do

  • The tool does not work out statistical significance, how many results you need, cause and effect or a winner.
  • A random split you plan is not checked by the tool.
  • The plan cannot stop ad spending or run a test.

Your information

What you type stays in your browser unless you copy, print or download it. Do not enter phone numbers, emails or private client details. If you reload the page, your work may disappear. This describes how the tool itself works. Other scripts on this website have their own privacy rules, so read our privacy policy before you enter private business information.

Read our privacy policy →

Questions

Is this an A/B testing tool?

No. It writes down your plan. A real controlled test with a random split has to be set up and checked somewhere else.

Does the spending limit stop spending?

No. Set and check the spending limits in your ad account yourself.

What kinds of comparison can I plan?

You can plan just watching, a before-and-after look, or a random split you propose. Choosing one writes down the plan. It does not run the test.

What is something to “watch so nothing gets worse”?

A number you pick to keep an eye on, like refunds or complaints, so a change does not harm something else. You enter it and say what it means.

What to try next

Want the thinking behind it? Read the guide: How to test a marketing campaign without changing everything at once →

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