Legal

Terms and Conditions

Last updated: 5 November 2026

These terms apply to the Celestium website and to the Celestium drone show design software. Celestium is a product of FLYSTACK SRL. By using the website or creating an account, you agree to these terms. If you do not agree, please do not use Celestium.

1. Who we are

Celestium is operated by FLYSTACK SRL, CUI 49092767, Reg. Com. J2023000766347, with its registered office at Str. Dunării 178, Bragadiru, Teleorman 147030, Romania ("we", "us").

2. Who can use Celestium

Celestium is made for professional use by drone show companies, designers and their teams. You must be at least 16 years old. If you use Celestium for a company, you confirm that you may accept these terms for it.

3. Your account

• Give accurate information and keep it up to date.
• Keep your password private. You are responsible for what happens under your account.
• Tell us straight away if you think someone else has used your account.

4. Flight safety is your responsibility

Celestium is a design tool. It does not fly drones and it does not approve a show as safe, legal or ready to fly.

Anything Celestium produces, including flight paths, distance and speed readings, safety checks, pyro timing, previews and exported files, is an aid to your own work. Before any flight, you are responsible for:

• checking and testing the show, including simulation and the checks your own procedures require;
• getting every permit, airspace approval and insurance the show needs;
• following aviation, pyrotechnic, safety and privacy laws wherever you fly;
• making sure the files suit your drones, firmware, site, weather and crew;
• the safe operation of the show and the safety of people and property.

5. AI features

Celestium may include AI features that create or change show content from your instructions. AI output can be wrong, incomplete or unsuitable, and similar output may be produced for other users. Review all of it before you rely on it. Section 4 applies to AI output in the same way as to everything else.

You must not use AI features to get around limits or safety controls in Celestium. We may set usage limits on these features.

6. Your content

You keep the rights to what you bring to Celestium and create in it, such as shows, formations, images, models and music. You give us permission to host, process and display it only as needed to run Celestium for you.

You confirm that you have the rights to use everything you upload, including logos, music and images. Do not upload anything that is illegal or that breaks someone else's rights.

7. Acceptable use

You agree not to:

• use Celestium in a way that breaks the law or harms others;
• try to reach accounts, shows or systems that are not yours;
• disrupt Celestium, overload it or get around its security or limits;
• copy, reverse engineer or resell Celestium, except where the law allows it;
• upload malicious code or harmful files.

8. Our rights

Celestium, including its software, design, name and logo, belongs to FLYSTACK SRL or its licensors. You may use it for as long as you have access, for your own show work. No other rights are given to you.

9. Website content

Pictures on the Celestium website are design illustrations unless they are labelled as shows. Features and access are confirmed during onboarding. Nothing on the website is a binding offer or a promise that a feature is available to you. Sending a form or booking a demo does not create a contract.

10. Plans and payment

Any paid plan, its price and what it includes will be confirmed to you before you commit to it. Separate written terms may apply to paid plans.

11. Availability and changes

We work to keep Celestium reliable, but we do not promise it will always be available or free of errors. We may change, add or remove features. Keep your own copies of important work.

12. Third-party services

Some features depend on services from other companies, such as map data. Those services have their own terms and may change or stop. Our Privacy Policy lists the main providers.

13. Suspension and ending your account

You can stop using Celestium at any time. Email us to close your account. We may suspend or close an account that breaks these terms or puts Celestium or other users at risk.

14. Warranty and liability

Celestium is provided "as is" and "as available". To the extent the law allows, we give no warranties that it suits a particular purpose, and we are not liable for indirect or consequential loss, lost profits, lost data, or for any loss arising from a flight, a show or a failure to follow section 4.

Nothing in these terms limits liability that cannot be limited by law, including for death or personal injury caused by negligence, or for fraud. If you are a consumer, your mandatory legal rights are not affected.

15. Changes to these terms

We may update these terms. We will post the new version on this page and change the date at the top. For important changes to the software terms, we will give reasonable notice. If you keep using Celestium after that, the new terms apply.

16. Law and disputes

These terms are governed by the laws of Romania. Disputes will be handled by the competent courts in Romania, unless mandatory law gives you a different right.

17. Contact us

• Company FLYSTACK SRL
• Registration CUI 49092767, Reg. Com. J2023000766347
• Registered office Str. Dunării 178, Bragadiru, Teleorman 147030, Romania
• Email [email protected]
• Phone +40 749 901 100