Turn your Google Sheet into an app people can log in to.
Keep the spreadsheet your team already knows. Add a login screen, a proper interface and permissions on top — without rebuilding anything.
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The spreadsheet stays. The chaos goes.
Sharing a Google Sheet means sharing everything in it. Stacker lets each person see and edit only what's theirs, through an interface that looks like real software.
Your sheet is the database
Each tab becomes a table, each row a record. Edits in Stacker are written straight back to the sheet, and changes to the sheet show up in the app.
Row-level sharing
Stop making a copy of the sheet for every client. Filter rows by the logged-in user and hide the columns they shouldn't see.
Forms instead of free-for-all
People add and edit records through validated forms, so the sheet stays clean and nobody overwrites a formula by accident.
A working internal tool in minutes, not a quarter
Connect the sheet, pick the tabs to expose and Stacker generates list, detail and form pages. Tune layouts and fields, then invite the team.
- Tabs become tables, header rows become fields
- Filter, sort and search without touching the sheet
- Works alongside the formulas you already have
Share one sheet with a hundred people — safely
Map a column to the logged-in user and each person sees only their rows. Roles decide which columns are visible and which are editable.
- Scope rows by email, team or any column
- Hide pricing, margins or notes from external users
- Read-only for some, edit for others
Buttons and forms that keep the sheet tidy
Replace 'just add a row at the bottom' with forms that validate input, and buttons that update status fields in one click.
- Validated forms for new records
- Custom buttons for approvals and hand-offs
- Trigger Zapier or Apps Script from a click
Questions? We're glad you asked.
- Will Stacker break my formulas?
- No. Stacker writes values into the cells you've mapped as editable fields. Formula columns are read-only in the app and keep calculating as before.
- How many rows can a sheet have?
- Stacker follows Google's own limits for the sheet itself; most teams are well within them. For very large datasets we recommend Airtable, Postgres or Stacker's own tables.
- Do users need a Google account?
- No. They log in to your Stacker app with any email address and never need access to the underlying sheet.
- Can I combine a sheet with other data?
- Yes. Connect Google Sheets, Airtable and SQL databases to the same app and link records across them.
Secure and safe
Stacker is audited and certified by industry-leading third-party standards. Your data stays in your Airtable, Google Sheet or database — Stacker reads and writes it on your behalf, with every permission rule enforced server-side.
Give your spreadsheet a login screen.
Connect a Google Sheet and invite your first user in under ten minutes. Free for 30 days.
- Two-way sync with Google Sheets
- Row- and column-level permissions
- Validated forms and action buttons
- Your logo, colours and domain