How Zeus learns which Google Ads changes work

Zeus checks every applied Google Ads fix at 30, 60 and 90 days, and uses the results to rank future findings and shape new ads.

Updated October 15, 2026

Every fix you apply from the Zeus Ads Review is followed up. Zeus measures what happened afterwards and learns which kinds of changes actually pay off. It's free and runs on its own.

How a change is judged

When Zeus suggests a fix, he notes the numbers it was meant to move, such as the spend on the searches being blocked. Then he checks again 30, 60 and 90 days after you apply it.

Each change is compared with a fair baseline, not just "before vs after". For example, a blocked search is measured against the rest of the campaign's spend, and a new ad against the other ads in its group. This way a busy season doesn't count as a win.

The result appears next to the change under Changes applied in the Zeus Review:

  • positive: it did what it was meant to.
  • neutral: no clear difference.
  • negative: it made things worse.
  • not enough data yet: too few clicks or conversions to tell. Zeus never guesses.

A change isn't marked as failed before 90 days, and the 90-day check is the final verdict. If several changes hit the same campaign within a week, Zeus discounts each one's credit.

How Zeus uses what he learns

  • Ranking: findings like the ones that worked best for this client come first. The measured waste figures themselves aren't changed.
  • Writing: lessons shape which searches Zeus flags and the angles he uses when drafting ads, including in Build a campaign with Zeus.
  • Evidence on findings: a finding can carry a note starting "Zeus has seen this work". It appears only with real evidence: at least 3 winning results on this account, or at least 5 from similar businesses across at least two agencies.

Examples

  • Blocked job searches: you blocked "plumber jobs" and "plumber salary" on 3 March. At 30 days, the spend on searches like those fell while the rest of the campaign stayed the same, so the change shows result: positive.
  • A new ad that didn't win: Zeus's new ad got a lower click-through rate than the other ads in its group by day 60. It shows result: negative, and Zeus leans away from that angle next time he writes ads for the client.
  • A quiet account: a campaign with 40 clicks a month often shows result: not enough data yet at 30 days and only gets a verdict at 60 or 90.

Limits and what it can't do

  • Only changes applied from ContentForge are followed (Zeus Ads Review fixes, Add as negative, campaigns built with Zeus). Edits made directly in Google Ads aren't measured.
  • Results show at the 30, 60 and 90 day marks, not before. The 90-day check is final.
  • Undone changes stop being measured.
  • Learning across agencies uses totals only. No other agency sees your clients' accounts, and you don't see theirs.

Who can use it

It runs on its own for every client with Google Ads linked. Anyone with the Clients tool sees the results in the Zeus Review. Client people never see it.

Troubleshooting

  • No result next to a change yet: it hasn't reached 30 days, or the Ads Review hasn't run since. The checks run each time the review runs (monthly, or when you click Run review now), so a result can show up a little after its mark.
  • "result: not enough data yet" for a long time: the campaign has too few clicks or conversions to judge fairly. Zeus never guesses.
  • A change shows "undone": someone clicked Undo under Changes applied. It's no longer measured.
  • No "Zeus has seen this work" notes: they need real evidence first (see above), so new accounts and new kinds of fixes won't have them.

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