Scellis
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Launch app

§ Terms

Terms of Service

The terms governing your use of the platform.

Scope and acceptance

These terms govern your use of the scellis.com website and the Scellis preview application (together, the “service”), operated by Scellis (provider details in the legal notice). By accessing or using the service, you accept these terms.

How personal data is handled is described separately in the privacy policy; the legal notice identifies the provider.

The service: preview status

Scellis is a browser-native, local-first platform for scientific computing: composable data preparation, analysis, simulation, statistics, and machine-learning training that runs in your browser on your own hardware, with your data staying on your device by default.

The service is currently a pre-launch preview, provided free of charge. Features may change or be removed, availability and data durability of server-side features are not guaranteed, and no service levels are promised. Do not rely on the preview as the sole store of irreplaceable data.

Accounts and GitHub identity

Some features require an account. Sign-in uses GitHub as identity provider (OAuth): we receive your GitHub account identifiers to establish your account and never see your GitHub password.

You are responsible for keeping access to your GitHub account secure and for activity occurring under your Scellis account. You may delete your account at any time; the privacy policy describes what deletion means for synced and published content.

Acceptable use

You agree to use the service only lawfully and considerately. In particular, you will not:

Please report security vulnerabilities to security@scellis.com; responsible disclosure is welcome.

  • use the service to store, run, or distribute unlawful content or malware;
  • infringe third-party rights — intellectual property, privacy, confidentiality — through content you create, upload, connect, or share;
  • attempt unauthorized access to accounts, data, or infrastructure, or probe, disable, or disrupt the service;
  • interfere with other users’ work, or abuse shared or pooled compute resources beyond the limits the service sets;
  • connect external data sources using credentials or data you are not authorized to use;
  • impose deliberately excessive load on the service outside its documented interfaces.

Your content

You retain all rights in the content you create with Scellis — datasets, workflows, blocks, models, notes, packs. Content that stays local never reaches our servers and needs no license to us.

For content you choose to sync, share, or publish, you grant us a non-exclusive, worldwide, royalty-free license to host, store, reproduce, transmit, and display that content solely as necessary to operate the service and only as directed by your sync and sharing settings. The license ends when you delete the content or your account, except that content you have published and that other users’ work legitimately depends on may persist in anonymized form, as described in the privacy policy.

When you publish or share content, you grant recipients the rights defined by the sharing setting or license you choose at publication. You are responsible for holding the rights needed to grant them.

Source-code license

The Scellis engine source code is published under a fair-code license — source-available and free for research, teaching, and personal or internal use, with production commercial rights reserved for a period and then converting, on a delayed schedule, to a permissive license. The exact instrument is recorded in the repository's LICENSE files. Your use of the source code is governed by that license, not by these terms; nothing here restricts rights the license grants or grants rights it withholds.

No warranty

The preview is provided “as is” and “as available”, without warranty of availability, error-free operation, or fitness for a particular purpose, to the extent permitted by law and subject to the liability section below.

Scellis is engineered for reproducible computation, but you remain responsible for validating results before relying on them in research, publication, or decisions. Scellis makes no medical or other regulated-domain claims.

Limitation of liability

We are liable without limitation for intent and gross negligence, for injury to life, body, or health, and under the German Product Liability Act. In cases of slight negligence, we are liable only for the breach of essential contractual obligations — duties whose fulfilment makes proper performance of the contract possible in the first place and on whose observance you may regularly rely — and then only up to the damage foreseeable and typical at the time of conclusion. Any further liability is excluded. As the preview is provided free of charge, the statutory liability standards for gratuitous services apply in addition.

Paid features and marketplace (at launch)

The preview contains no purchases: no paid tiers, no marketplace, no payment processing. Nothing in the preview creates an obligation to pay.

Paid subscription tiers and a content marketplace are planned for launch. They will be governed by additional terms presented for acceptance before any purchase — including payment terms (with Stripe as payment processor), statutory consumer information such as withdrawal rights, and marketplace rules. Computation itself will never be paywalled: paid tiers gate platform services and content delivery, not what you can compute locally.

Changes to these terms

We may amend these terms as the preview evolves. The current version with its effective date is always available at this address; material changes will be announced on the site before they take effect. If you continue using the service after that date, the amended terms apply; if you do not agree, stop using the service — your local data stays on your device, and the source code remains usable under its license.

Governing law

These terms are governed by the law of the Federal Republic of Germany, excluding the UN Convention on Contracts for the International Sale of Goods (CISG). If you are a consumer, the mandatory consumer-protection rules of the country of your habitual residence remain unaffected.

Contact and effective date

Questions about these terms: hello@scellis.com.

Effective date: July 3, 2026. Scellis is pre-launch; these terms will be reviewed by qualified legal counsel before launch, and the then-current version will be published here.