Ledger Spreadsheet -
Open every row. See what changed.

See Ledger at work

Ledger is a local-first spreadsheet built to keep up as work grows and show how the workbook got to its current state. These short demos show the core idea in practice: room to work, history you can inspect, and power that stays readable.

Go further. See how you got there.

Two million rows, still a live workbook

▶

• Moves from the first rows through a two-million-row workbook and jumps directly to row 2,000,001.
• Shows the last imported record and live selection statistics across real columns.
• Returns to the top of the workbook, demonstrating a viewport designed to keep working as data grows.

Cell history: see the change behind a number

▶

• Builds a small forecast and changes the renewal forecast as review information arrives.
• Opens Cell History for the selected value instead of leaving the current number unexplained.
• Shows the recorded edits behind that cell, alongside the workbook context.

Replay how your spreadsheet was built

▶

• Creates a compact operating model, then marks an Approved plan checkpoint.
• Changes a forecast, adds notes, then scrubs backward through the workbook's history.
• Returns to the latest workbook with every later change intact.
• Drags through each change like a video timeline, so you can review, explain, and audit how a number got there.

Write your own reusable formulas for a messy sign-up sheet

▶

• Starts with a pasted sign-up sheet containing inconsistent names, email addresses, phone numbers, and yes/no values.
• Loads small, readable workbook functions and uses them from ordinary cell formulas.
• Keeps the original columns beside the cleaned results, so the transformation stays visible and reviewable.

Four things that make large files stop being a problem.

Who Ledger Is For