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Cecil Desktop

Terms of use

Last updated: November 11, 2026

These terms apply to the use of Cecil Desktop (the "app") and to the Pro license. By installing or using the app, you accept them.

Publisher

Cecil Desktop is published by Aperture Lab, sole proprietorship (entreprise individuelle) of Arnaud Ligny, Montreuil, France. SIRET number being assigned. VAT not applicable, article 293 B of the French General Tax Code.

Contact: contact@aperturelab.fr

The app

Cecil Desktop is a desktop app to manage, build, preview and publish static sites made with Cecil. It works on the files of your sites, on your computer: no account is needed.

Free version and Pro license

The free version is free of charge, without time limit. It manages one site, with one publication target per site, and the basic diagnoses. The Writing mode is free.

The Pro license adds what is described on the pricing page (unlimited sites and publication targets, SEO and links diagnoses, the form of the pages schema…).

  • Perpetual: a license does not expire. It covers every version of the app released during the year following its purchase. The versions released afterwards work like the free version, without taking anything away: renew the license only if you want their Pro features.
  • 3 computers: a license can be activated on 3 computers at the same time. Deactivate a computer from the app (Preferences › License) or from the customer portal to use it on another one.
  • Checks: the app checks the license with our server once a week. Without an answer (offline), the license stays valid for 30 days.
  • Personal key: the license key must not be shared or published. A license may be revoked in case of fraud, refund or chargeback.
  • What you created with a Pro feature stays usable when a license is no longer valid: only adding is limited.

During the beta, the Pro features may be available without a license.

Purchase

The Pro license is sold by Polar, Merchant of Record: Polar handles the payment, the invoices, the taxes and the refunds, under its own terms. Your license keys, invoices and computers are listed in its customer portal.

Your sites and your accounts

Your sites, their content and their files stay yours: the app does not send them anywhere, except to the publication providers you configure (Netlify, Vercel, GitHub, Amazon S3…), whose own terms apply. You are responsible for the content you publish and for the accounts and tokens you use.

Keep backups of your sites: the app edits their files, and deletes them to the recycle bin of the system when you ask it to.

Warranty and liability

The app is provided "as is", without warranty of any kind. Within the limits allowed by law, the publisher is not liable for loss of data, of revenue or for any indirect damage resulting from the use of the app.

Personal data

See the privacy policy.

Changes

These terms may change, in particular with new versions of the app. The version in force is the one published on this page.

Applicable law

These terms are governed by French law.