Independent tools and player-written guides for Genshin Impact, Honkai: Star Rail, Wuthering Waves, Zenless Zone Zero, Blue Archive, and Arknights — built by someone who actually uses them between patches.
GachaHaven started because I was tired of jumping between half-finished calculators and guides that read like they were generated overnight. The focus here is practical: pity math, resin/waveplate timers, builders, and guides that say what I would tell a friend — including mistakes I made.
One developer and long-time gacha player. There is no large editorial team and no publisher funding. When a page says "last verified," that is the date I checked the numbers against the live game or patch notes.
Not affiliated with miHoYo / HoYoverse, Kuro Games, or any other game company. All trademarks belong to their owners. Ads (when shown) help keep the servers and tools online; they do not buy editorial placement.
Bug reports and corrections welcome via the contact page.