Lean Operations Monitor — Privacy Policy

Last Updated: September 2026

Lean Excel Solutions ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we handle data within the Lean Operations Monitor Excel Add-in (the "Add-in"), including for users in the European Economic Area, United Kingdom, and California, who have specific rights described in Section 6. Lean Excel Solutions is the data controller; see Contact below. Company-wide policy: www.leanexcel.com/privacy.

1. Local workbook processing

Free calculators (OEE, Takt Time, Pareto) and Lean Ops Pro analytics run in the Excel task pane. Workbook values used for analysis are processed locally and are not uploaded to our servers as shop-floor storage.

• Free features: No account is required. We do not require login to use OEE, Takt, or Pareto.
• Workbook data: Production logs and reference data for Pro remain in your Excel file unless you choose to share the file yourself.
• Internet permission: Microsoft AppSource may label the Add-in as able to send data over the Internet because the task pane loads over HTTPS and optional Pro sign-in/billing calls our services. That does not mean worksheet content is uploaded for analysis.

Web version (lean.leanexcel.com in a browser)

• Files stay in your browser: A Lean workbook you open, and the setup, reference data, and logs you edit, are processed inside your web browser, on your device. They are not uploaded to our servers and we do not store them.
• Copy kept on this device: So a page reload does not lose your work, the browser keeps a copy of the workbook in its own storage (IndexedDB) on your device. Clear in the header removes it; clearing your browser’s site data also removes it.
• Download: The workbook is created in your browser and saved directly to your device.

2. Account and Lean Ops Pro (optional)

If you upgrade to Lean Ops Pro, you sign in with Microsoft, Google, or email so we can verify your subscription. Account and billing data may include email address and subscription status.

• Authentication: Handled via Microsoft identity, Google identity, and/or our auth provider (Supabase). A session token is kept in your browser’s local storage inside the task pane so you stay signed in — this is not used for advertising or tracking.
• Payments: Processed by Paddle as Merchant of Record. Paddle’s privacy policy applies to payment and tax invoices.
• We do not sell your personal information to advertisers.

3. Who processes your data (sub-processors)

The following third parties process personal data on our behalf, strictly to provide the Add-in:

• Supabase — authentication and subscription-status database.
• Paddle.com Market Limited — payment processing, tax collection, and invoicing (Merchant of Record).
• Microsoft (Entra ID) — optional Microsoft sign-in.
• Google — optional Google sign-in.
• Our transactional email provider — delivers sign-up confirmation, sign-in code, and password-reset emails on our behalf.
• Vercel — hosts the Add-in’s task pane files.

4. Data retention

We keep account and subscription records (email address, subscription status, billing interval) for as long as your account is active, and for up to 7 years afterward where needed for tax, accounting, or fraud-prevention obligations. You may request earlier deletion under Section 6, subject to those legal obligations.

5. Cookies and similar technologies

The Add-in does not use advertising cookies. It uses browser local storage inside the Excel task pane, or in your browser for the web version, to keep you signed in between sessions (see Section 2). You can sign out at any time from the Account panel, which clears this session data. The web version also keeps your workbook in browser storage on your device (see Section 1); Clear removes it.

6. Your rights (GDPR / UK GDPR / CCPA)

If you are located in the EEA, UK, or California, you have the right to access, correct, export, or delete your personal data, and to object to or restrict certain processing. To exercise any of these rights, email hello@leanexcel.com from the address on your account — we will respond within 30 days. California residents also have the right to know what categories of data we collect (see Section 3) and to non-discrimination for exercising these rights; we do not sell personal information.

7. International data transfers

Lean Excel Solutions is based in India. Using the Add-in may involve transferring your data to servers or sub-processors located outside your country, including the United States and European Union. Our sub-processors (Section 3) each maintain their own safeguards for cross-border transfer, such as standard contractual clauses.

8. Children’s privacy

The Add-in is a workplace productivity tool and is not directed at, or knowingly used to collect data from, individuals under 16 years of age.

9. Product analytics

The Excel Add-in does not collect product-usage analytics. The web version adds one to a daily total when a workbook is opened, when Analytics runs, and when a workbook is downloaded. Only the app name, the kind of event, and the date are recorded — not who you are, your IP address, file names, or any worksheet values. Hosting providers may record standard server logs.

10. Third-party libraries

The Add-in loads Microsoft Office.js to interface with Excel. Microsoft’s privacy policies apply to that library.

11. Changes to this policy

We may update this Privacy Policy by posting a revised version with a new "Last Updated" date.

12. Contact & Accountability

Lean Excel Solutions
Buldhana, Maharashtra 443403, India
Email: hello@leanexcel.com
Website: www.leanexcel.com
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