Probably Stolen Codex is an unofficial fan guide for the Steam game Probably Stolen. It offers a walkthrough, sourced guides and about a dozen calculators and trackers covering rent, perks, appraisals, achievements and endings, with Steam sync in the achievement tracker.
The page describes its calculators and guides as free, and no paid tier is shown. It carries the notice 'Unofficial fan site, not affiliated with or endorsed by Questing Goose Studio or tinyBuild'.
Players needed quick mid-run answers for rent, perks and endings. This guide puts those calculators and trackers in one place.