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Local database tool for small business

Airtable/Access-style local database workflows: tables, CSV, saved queries and reports.

Coming soon

Affordable premium, offline-first software. Local-first; no subscription trap. Culltron Max and Ultra X27 (Ultra X27 generation). Affiliate disclosure.

What this covers

Spreadsheets break when a list becomes a database. Data Max gives a small business a real SQLite database with forms, reports and guarded SQL, kept on its own machine.

The Culltron tools for this job

Data Max

A local SQLite database studio that works fully offline.

  • Create databases and design tables with types, primary keys and foreign keys, then edit data in a grid.
  • Guarded SQL: reads run freely, while a write needs Write mode, a confirmation and a single statement.
  • Group-by reports with charts.
  • CSV and JSON import and export. Import handles comma, semicolon, tab and pipe separators and common encodings. Export is spreadsheet-safe by default.
  • Six templates with sample data: CRM, inventory, invoices, municipal assets, members and projects.
  • Model Pipelines: validated join and aggregate models with built-in data tests and local run receipts.

Limits: Nothing is uploaded and nothing runs on a schedule unattended. Pipelines verify up to 100,000 source rows per run.

Office Max

Documents, spreadsheets and slide decks in one offline-first desktop app.

  • A rich-text document editor with a structured citation registry, deterministic numbering and a bibliography you can refresh.
  • A spreadsheet formula engine running in the app, with 103 user-facing functions, A1 ranges and dependency recalculation that detects circular references.
  • A slide editor with a Present mode.
  • DOCX and XLSX import with a review step. Before a copy is made, the app shows what will be lost and what is supported. The original file is kept unchanged and is verified by checksum.
  • DOCX and XLSX export of the supported subset, plus local drafts and autosave.
  • A signed offline licence lease, so you can keep working without a connection.

Limits: Imports cover a supported subset; Word citation fields and syncing with external reference managers are not claimed. Import reports are local checksums, not a guarantee of full fidelity.

Who it is for

How it works

  1. Each Max app is a separate desktop product built on Culltron's shared, hardened platform.
  2. Files and records stay in a local folder on your machine, and the core tools work offline.
  3. A signed licence lease unlocks the paid edition. Ultra X27 adds advanced features that the server enforces.
  4. When you change a file, the app writes a new copy, often with a checksum receipt, instead of silently overwriting your original.

Frequently asked questions

Do I need to know SQL?

No. You can design tables and edit data in a grid. SQL is there if you want it, and writes require Write mode plus a confirmation.

Can I bring my spreadsheet in?

Yes, via CSV import, which detects common separators and encodings and rejects broken input instead of corrupting it.

Is there a cloud sync?

No. Data stays local and nothing is uploaded.

What templates are included?

Six: CRM, inventory, invoices, municipal assets, members and projects.

Release status: built and tested in the repository. A public download appears only after signing, checksum verification and release approval; see Downloads.