Terms of Service
Last updated: June 17, 2026
Welcome to Veenie
These terms govern your use of the Veenie simulation platform, our Google Workspace add-ons (including AeroSheet), open-source physics engines, and NRE engineering services.
We build aerospace math, physics engines, and simulation UIs. They are highly accurate, but they are still simulations. If you use AeroSheet to design a 3D-printed drone, ignore the stall warnings, and fly it full-throttle into a pine tree yelling "Valhalla witness me!" that is entirely on you. We are not liable for your hardware or your crashed prototypes.
By using our tools, you agree to these terms.
About Us: Veenie is operated by Pipewriter OÜ, registered in Estonia (Sepapaja 6, Tallinn 15551, reg. no. 14904870).
1. Google Workspace Add-ons (AeroSheet)
Lifetime Licenses
When you purchase AeroSheet or another Veenie tool sharing its pricing model, you're buying a lifetime license for that product. "Lifetime" means the lifetime of the product, not your mortal life. We'll maintain it as long as the Google Apps Script ecosystem remains viable, and we'll give reasonable notice if we ever discontinue a product.
We reserve the right to release new major versions as separate products in the future, though we'll be reasonable about what counts as a major version versus a free update.
Acceptable Use
You may use AeroSheet for personal, academic, or commercial work. Designing wings for client drones, university research, RC builds, funded aerospace programs — all fine.
You may not reverse-engineer the license validation system, share your license key publicly, or scrape or bulk-download data from Veenie's servers and APIs. You also may not resell access to AeroSheet bundled into other products without a separate commercial agreement.
Eligibility
You must be at least 13 years old to use Veenie tools. If you are located in the European Union, you must be at least 16 years old, or have parental consent. By using our tools, you confirm you meet this requirement.
What the Tool Does and Doesn't Guarantee
AeroSheet implements Thin Airfoil Theory, Prandtl finite-wing corrections, and NACA 4-digit profile generation. It is designed for preliminary aerodynamic sizing, academic validation, and hobbyist design work.
It is not a substitute for CFD, wind tunnel testing, or final engineering sign-off. We don't guarantee that a wing designed in AeroSheet won't tip-stall. You are responsible for your own hardware testing and final engineering analysis.
2. Veenie Web Simulator
Telemetry and AI Training
By flying the simulator at veenie.space/fly past the 30-second mark, you acknowledge that we log your flight telemetry. We use this anonymized data to train machine learning models for autonomous Venus atmospheric navigation. Every flight contributes to a dataset we intend to eventually fly on a real mission.
If you don't want your flight logged, close the session before 30 seconds.
Fair Use
Don't use bots, scripts, or automated tools to spam the flight endpoints or the telemetry logger. If you want to train your own RL agents using our physics engine, clone the open-source headless engine from github.com/hackiku/veenie and run it locally. Don't hammer our production servers.
3. Open-Source Physics Engine
The core Veenie physics engine (src/lib/physics) and Lab user interface are released under the MIT License. You can use it, fork it, love it, build on it, and publish derivatives.
The 3D assets, scrollytelling UI, LLM flight control layer, AeroSheet Apps Script integrations, and curated databases are our exclusive intellectual property. You may not resell our add-on architecture or redistribute our Three.js scenes as your own work.
Your designs, wing configs, and CAD exports belong entirely to you. We claim no ownership over anything you create with our tools.
For the AeroSheet Google Workspace add-on, the core aerodynamics solver is released as @veenie/aero on npm (MIT license) — separate from the Veenie Venus aerostat playground at github.com/hackiku/veenie, which is also MIT. You can use either, fork either, build on either.
4. NRE Services and Enterprise Simulations
Custom simulation work is governed by individual Statements of Work and MSAs.
We build physics engines and web architecture. We are not an ITAR compliance firm, and we do not provide legal opinions on export control. If you purchase an enterprise or self-hosted deployment, you are solely responsible for ensuring your data, configuration files, and vehicle specs comply with ITAR, EAR, or applicable export control laws. We provide architecture documentation to support your compliance review; the legal determination is yours.
5. Disclaimer of Warranties (The "Don't Sue Us" Clause)
The software is provided "AS IS," without warranty of any kind.
Veenie simulations are validated against historical data (our Venus atmospheric engine is within 2% of the 1985 VEGA balloon telemetry). AeroSheet implements industry-standard Thin Airfoil Theory and Prandtl finite-wing corrections. But at the end of the day, they are not certified engineering tools. They are designed for research, storytelling, and preliminary sizing.
We do not guarantee that a wing designed in AeroSheet won't tip-stall into a lake. We do not guarantee that our Venus atmosphere model precisely matches the exact wind shear on the day your actual balloon deploys. You are responsible for your own hardware testing, wind tunnel validation, and final engineering sign-off. We are not liable for lost drones, crashed prototypes, failed space missions, or angry clients.
6. Limitation of Liability
To the maximum extent permitted by law, Pipewriter OÜ is not liable for indirect, incidental, special, consequential, or punitive damages arising from your use of our software or simulations. Our total liability for any claim is limited to the amount you paid us in the preceding 12 months.
7. Governing Law
These terms are governed by the laws of Estonia. We prefer to resolve issues over email. If we can't, disputes are resolved in the courts of Tallinn, Estonia.
8. Contact
Email: ivan@veenie.space
Address: Pipewriter OÜ, Sepapaja 6, Tallinn 15551, Estonia
Found a sign error in a lift coefficient formula? Email us.