Normalized result-set distance
For each keyword, we compare the ordered top 20 with the prior day. Rank movement and result replacement are normalized, averaged, and placed on a 0–10 scale.
Free daily search signal
See SERP turbulence without the guesswork.
A deterministic daily view of how much the top 20 organic results moved across a fixed basket of 200 US-English searches.
Collecting the daily baseline. No movement score is invented before two complete days exist.
Overall observed displacement
Higher numbers mean more result-set displacement. They do not identify a cause or confirm an algorithm update.
Sensor basket facts
- Fixed keywords
- 200
- Search categories
- 10
- Organic results per search
- 20
- Hours between scheduled updates
- 24h
Category movement
Ten slices of the same daily search landscape.
Every card uses the same fixed basket and exact calculation. Choose a category to inspect its published 30-day history.
Finance
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyHealth
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyTravel
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyTechnology
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyRetail
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyEntertainment
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyLocal services
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyEducation
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyReal estate
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyAutomotive
Collecting baseline
Collecting baseline
0 published daily observations shown below
View historyAccessible data table
Entertainment history
The table carries the same values as the sparkline, so the trend never depends on a visual alone.
| Observation date | Index, 0–10 | Observed displacement |
|---|---|---|
| Loading published observations… | ||
Honest methodology
What this index measures—and what it cannot tell you.
The sensor compares consecutive complete days. It is simple enough to reproduce and deliberately makes no causal claim.
Learn more →A fixed repository basket
The 200 keywords span 10 categories. Visitors cannot submit or select terms, and basket edits require a reviewed code change.
One consistent market
Every observation uses US-English desktop search and the first 20 organic results. It is not a view of every country, device, or query.
Two days before movement
Day one publishes an honest baseline state. A numeric value appears only when a category has two consecutive, fully collected days.
Budget-bounded collection
A global daily ceiling stops vendor spend. A partial day publishes only complete categories and labels every skipped category instead of filling gaps.
Observed movement, not a diagnosis
A high value reports displacement in this basket only. It does not prove a search algorithm update, explain why results moved, or predict your site's rankings.
Turn the signal into action
See what your own site should fix next.
Run a free, plain-language audit. No account is required to start.
Start a free audit