How RoyaleDeck Computes Its Stats

Last updated Oct 14, 2026

Where the data comes from

Every battle comes from the official Clash Royale API (Supercell), accessed server-side through the RoyaleAPI proxy. Nothing is scraped from other sites.
RoyaleDeck tracks up to 5,000 active players: the global and regional Ranked (Path of Legends) leaderboards, plus opponents and clan-mates found in their battles.
Battle logs are read every 15 minutes for players due a refresh (every 2–6 hours each, depending on rank). Each battle is stored once, even when both players are tracked.

Only 1v1 battles with complete decks: Ranked, Trophy Road and challenges. Friendly, 2v2 and event battles are stored but not counted in the meta.
Evolutions and Heroes are tracked as their own versions of a card, exactly as they were played.
Statistics are computed for the last 1d, 7d, 30d and recalculated every 6 hours.

Meta score combines a conservative win rate (the lower bound of a 95% Wilson interval, so small samples cannot top the list) with how often the deck is played.
A deck needs at least 60 battles to be ranked, and 40 battles before its win rate is shown. Below that, pages say "Not enough data" instead of showing a number.
Every stat on the site shows its period and the number of battles behind it.

Deck-vs-deck and card-vs-card results come from real battles; a matchup needs 30 battles before it is shown.
Deck Analysis scores (attack, defence, air, ground, cycle, synergy) are rule-based, from each card's roles and elixir cost. They are deterministic and are not AI.

Battles are kept for 62 days, enough for every period and its previous period (used for trends).

You are welcome to quote RoyaleDeck statistics. Please credit "RoyaleDeck (royaledeck.app)" with a link to the page you used.