Observed arrival · 2026-10-01

Rechenwerk: a programmer calculator down to the bit

rechenwerk.app Visit website

Editorial interest 85/100 Selection signal · not a rating of the site

Rechenwerk is a programmer calculator for iPhone, iPad, and Mac, built around mixed-base calculations, RPN, and bit-level inspection.

Landing page captured for the 2026-10-01 issue.

For: Programmers working with bits, registers, and number bases
Worth noticing: The page describes word sizes from 1 to 64 bits, with unsigned, one’s-complement, or two’s-complement modes.

Field notes

The guide gives worked examples for mixed-base expressions and RPN entry, including the prefixes $, %, @, and #. The feature list also names rotate-through-carry operations and a tappable bit map for setting, clearing, and testing individual bits; these are presented as app capabilities on the homepage.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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