Extreme volatility, typically indicating a major algorithm update is in progress. Key Features
Volatility isn't always global. Google Grump tracks data across several countries, including the US, UK, Australia, Germany, and France. google grump
Historical charts help identify patterns in how Google tests and rolls out new ranking signals. Survival Guide for a "Furious" Algorithm Historical charts help identify patterns in how Google
The tool calculates the average number of rank changes across the top 100 search results for roughly 30,000 keywords. Based on this data, it assigns a "mood" to Google: the algorithm is stable.
Google Grump is a free SERP (Search Engine Results Page) volatility tool that measures fluctuations in Google rankings. The tool analyzes approximately 30,000 randomly selected keywords and calculates the average ranking change across the top 100 results for each. This data is then translated into one of four "moods" that describe the current state of the algorithm: Low volatility; rankings are stable.
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Minimal fluctuations; the algorithm is stable.