Soulver

Soulver is a notepad‑style calculator that lets users write free‑form text mixed with numbers and have the expressions evaluated in real time. It works on macOS, iPad and iPhone, supporting natural‑language input for operations such as unit, currency, date and time calculations, percentages, time‑zone conversions and compound‑interest formulas. The app automatically saves each line, allowing users to revisit and edit previous work.

The interface combines a lightweight note‑taking environment with spreadsheet‑like features: lines can reference earlier entries, variables can be defined with multi‑word names, and subtotals or totals are generated automatically. Syntax highlighting and automatic formatting help keep calculations readable, while headings and comments provide structure.

Designed for people who need to explore numerical ideas without switching between separate calculators, spreadsheets or text editors, Soulver offers a single place to perform multi‑step calculations, track conversions and keep a record of the reasoning behind each result.