Pure bitwise calculator for developers — AND, OR, XOR, NOT, left/right shifts. Enter binary, decimal, or hex; see results in all four bases plus 32-bit bit visualization. Calculation history, one-click examples, "Why This Matters" explanations. 100% client-side, no signup, no tracking. Built after a 2 AM debugging session where every existing tool was either ad-infested or hid the bit-level detail.