All Zenless Zone Zero tools

Four tools covering the build loop: grade discs, compute damage, tune crit, budget pulls. All free, all client-side, data reviewed 2026-10-08.

Grade any disc: roll value %, crit value, and which substats are dragging it down.

Expected hit, crit and non-crit numbers from your ATK, bonuses and crit stats.

Is 70/140 better than 55/180? Expected-value math with next-substat advice.

Pity, guarantee and polychrome budget — odds for your next ten-pull and beyond.

Guides that feed the tools

How disc rolls work — Substat pools, roll counts, and why a "bad" disc can still be god-tier for one agent.
Crit value explained — The 2×CR + CD convention, the 1:2 rule, and when to break it.
Pull economy basics — What f2p income really is per patch, and how to budget for a guarantee.