# LightInventory > Inventory control on top of your own Google Sheets: approvals, roles, a tamper-evident history and passkey security. Your data stays in your Sheet. ## Pages - [Changelog](https://www.lightinventory.com/changelog.md): What changed in LightInventory and on this site, newest first, with a link to the details of every change. - [New public site and help centre](https://www.lightinventory.com/changelog/2026-10-28-public-site.md): The LightInventory site now has a help centre with search, Markdown copies of every page, and a clearer home page. - [Compare LightInventory with other inventory tools](https://www.lightinventory.com/compare.md): Honest, sourced comparisons between LightInventory and other inventory tools small teams consider, including where the other tool is the better choice. - [AppSheet or LightInventory for inventory on Google Sheets](https://www.lightinventory.com/compare/appsheet.md): Build your own stock app in AppSheet, or use a ready inventory system on your Sheet? Setup, controls, history, Google access and price, compared with sources. - [Lexware warenwirtschaft or LightInventory for stock control](https://www.lightinventory.com/compare/lexware.md): Windows merchandise management for German businesses or a ready inventory system on your own Google Sheet? Setup, stock, roles, history and price, with sources. - [Odoo Inventory or LightInventory for small-team stock control](https://www.lightinventory.com/compare/odoo.md): An ERP inventory app or a ready inventory system on your own Google Sheet? Setup, approvals, roles, history, data and price, compared with sources. - [SAP Business One or LightInventory for inventory control](https://www.lightinventory.com/compare/sap-business-one.md): An ERP for small and midsize businesses or a ready inventory system on your own Google Sheet? Approvals, roles, history and setup, compared with sources. - [Sortly or LightInventory for team inventory tracking](https://www.lightinventory.com/compare/sortly.md): A mobile-first inventory app or a ready inventory system on your own Google Sheet? Approvals, roles, history, export and price, compared with sources. - [Zoho Inventory or LightInventory for small-team inventory](https://www.lightinventory.com/compare/zoho-inventory.md): A cloud inventory and order app or a ready inventory system on your own Google Sheet? Approvals, locations, history, data export and price, compared with sources. - [Inventory audit trail for Google Sheets](https://www.lightinventory.com/features/audit-trail.md): See who changed stock, what changed, when and why. Every movement is recorded, reversible and protected by a tamper-evident chain. - [Inventory management in Google Sheets](https://www.lightinventory.com/guides/inventory-management-google-sheets.md): How to run inventory in Google Sheets with a movements ledger, working formulas, low-stock flags, protection and history, plus the limits to plan for. - [Stock control alongside your accounting software](https://www.lightinventory.com/guides/inventory-with-accounting-software.md): How to split work between accounting software and a stock system, keep invoice numbers and movements in step, and reconcile stock every month. - [Help centre](https://www.lightinventory.com/help.md): Answers about running inventory on Google Sheets with LightInventory, from your first sheet to roles, history and data privacy. - [Data and privacy](https://www.lightinventory.com/help/data-and-privacy.md): What LightInventory stores, how to remove its Google access and how to delete your data. Choose the task you need help with. - [Delete your LightInventory data](https://www.lightinventory.com/help/data-and-privacy/delete-your-data.md): How to delete your LightInventory account or organization, what is erased and when, and what is kept, including your spreadsheet. - [Revoke LightInventory's Google access](https://www.lightinventory.com/help/data-and-privacy/revoke-google-access.md): Remove LightInventory's access from your Google Account, and learn what happens to the app, your team and your spreadsheet afterward. - [What LightInventory stores](https://www.lightinventory.com/help/data-and-privacy/what-we-store.md): A complete list of what lives in your Google Sheet and what LightInventory keeps on its own servers, with retention periods. - [Getting started](https://www.lightinventory.com/help/getting-started.md): What LightInventory is, how it connects to your Google Sheet and what changes for your team on day one. - [How LightInventory works](https://www.lightinventory.com/help/getting-started/how-it-works.md): LightInventory adds approvals, roles and a tamper-evident history on top of a Google Sheet you own. Here is how the pieces fit together. - [Google Sheets](https://www.lightinventory.com/help/google-sheets.md): Choose a task to find out who changed a cell, protect ranges, restore an earlier version, or check the Google Sheets limits that affect inventory. - [Google Sheets limits for inventory](https://www.lightinventory.com/help/google-sheets/limits.md): The Google Sheets cell, sharing, version, IMPORTRANGE, API and Apps Script limits that matter for inventory, each with its official source and what to do near it. - [Protect a sheet or range in Google Sheets](https://www.lightinventory.com/help/google-sheets/protect-ranges.md): Lock formula columns or whole tabs in Google Sheets with a warning or a restriction, and learn how protection works with sharing and where it stops. - [Restore an earlier version of a Google Sheet](https://www.lightinventory.com/help/google-sheets/restore-a-version.md): Restore a whole spreadsheet from version history, or copy an earlier version and bring back only the range you need without losing newer changes. - [Find who changed a cell in Google Sheets](https://www.lightinventory.com/help/google-sheets/who-changed-a-cell.md): Use cell edit history, version history and edit notifications in Google Sheets to see who changed a cell and when, and learn what each one leaves out. - [Team and roles](https://www.lightinventory.com/help/team-and-roles.md): The five roles in a LightInventory organization, what each one can do, how location scope narrows access and how approvals work. - [Admin role](https://www.lightinventory.com/help/team-and-roles/admin.md): Admins run the team and daily work. They can do almost everything the Owner can, except sheet, billing and organization-level changes. - [How approvals work](https://www.lightinventory.com/help/team-and-roles/approvals.md): Approvals let your organization require a second person for sensitive changes, such as price edits, before they reach your Google Sheet. - [Approver role](https://www.lightinventory.com/help/team-and-roles/approver.md): Approvers record stock and review other people's change requests. They can never approve their own request. - [Editor role](https://www.lightinventory.com/help/team-and-roles/editor.md): Editors record stock movements and edit items in the locations they work in. Price changes can require approval. - [Limit a member to some locations](https://www.lightinventory.com/help/team-and-roles/location-scope.md): Location scope limits an Editor or Viewer to the locations they work in, so a store team sees and changes only its own stock. - [Owner role](https://www.lightinventory.com/help/team-and-roles/owner.md): The Owner holds the organization, connects the Google Sheet and is the only role that can change billing, sheet settings or delete the organization. - [Viewer role](https://www.lightinventory.com/help/team-and-roles/viewer.md): Viewers see items, stock and history in their locations and change nothing. Every member counts as a seat, including Viewers. - [Security at LightInventory](https://www.lightinventory.com/security.md): Where your data lives, what Google access we ask for, how sign-in, roles and tamper-evident history work, and which providers we use. - [How we handle your waitlist email](https://www.lightinventory.com/waitlist-privacy.md): What happens to the email address you give us for the LightInventory waitlist, who processes it, how long we keep it and how to remove it.