The Activity Score No Longer Dips When a New Season Starts
Donations are now scored on this season's pace, roster activity is measured more accurately, and war attacks count as playing. Every clan has been rescored.

Clash of Clans resets donations every 28 days. Until today the Activity Score read donations as a running season total, so every clan looked quieter the moment a new season began and then climbed back over the following four weeks. On the morning after the 2 November reset, 1,006 clans had dropped 20 points or more without anything changing in the clan.
Today's update fixes that, along with three problems we found in how roster activity was recorded. Every clan on the site has been rescored.
Donations are scored on this season's pace
The score now looks at how many troops each member donates per day so far this season. A clan that donates steadily gets the same donation points on day 3 of a season as on day 25. You can see the pace on any clan page, under How this score is worked out.
Clans whose roster we have not measured recently are estimated from how many members have donated or received troops this season. That share always starts low after a reset, so the estimate now allows for how far into the season we are.
On the first day of a new season there is too little to go on, so a clan's score stays where it was until the next day.
Roster activity is more accurate
Roster activity is worth 55 of the 100 points. It is the share of members we have seen playing in the last 14 days.
No more 0% from a roster we had not checked. About 29,000 clans were showing 0% roster activity only because we had not compared their roster in the previous two weeks. Those clans are now estimated from donation activity until we check them again.
Season resets no longer hide active members. We spot activity by watching each member's numbers go up. Donations and trophies both reset with the season, so a check that spanned a reset missed most of the players who were donating. Any donation since the reset now counts.
War attacks count as playing. A member who only attacks in war used to look inactive. This applies to clans whose wars ClashScout follows: any clan with the ClashScout bot connected, a verified leader, a recruiting listing, or a member who has linked their account.
What moved
Of 99,004 scored clans, 70,963 changed. 22,037 rose by 10 points or more and 6,377 fell by 10 or more. Most of the rise comes from the roster fix, since clans that were stuck on 0% are now scored on an estimate.
Over a whole season the new donation scoring averages out where the old one did. Clans checked early in a season gain the most, because the old score had them at the bottom of the dip.
Your score history is kept
Scores recorded before today stay tagged with the previous formula, so a step on your clan's trend line at this date comes from the change of formula.
What you need to do
Nothing. The score updates itself.