Local-first architecture
PlanszówkaTo stores collection, wishlist, plays and plans in browser localStorage. The same data set powers the selector, statistics and cost-per-play tool. Removing site data in the browser also removes these records unless a JSON backup was downloaded.
Random draws
Randomizers use the browser cryptographic random-number generator. This avoids predictable sequences, but it does not turn a home tournament into a certified draw. The bracket and team tools are intended for social play.
Statistics
Win rate equals recorded wins divided by recorded plays for a player. Cost per play equals the purchase price saved in the collection divided by the number of play-log entries connected to that game. Missing price or zero recorded plays produces no value rather than an invented estimate.
Limitations
The service does not import proprietary board-game databases and does not verify official rules. Game data is entered manually, which keeps the service independent and lets the user decide what is stored.