uCalc SDK End User License Agreement (EULA)

Copyright (c) 2026 uCalc Software / Daniel Corbier

This License Agreement ("Agreement") governs the use of the uCalc software component ("Software"). By downloading, installing, or using the Software, you agree to the terms of this Agreement.

1. COMMUNITY LICENSE (FREE)

Subject to the terms and conditions of this Agreement, uCalc Software (Daniel Corbier) grants you a non-exclusive, non-transferable, royalty-free license to use, and integrate the Software for commercial and non-commercial purposes, strictly provided that you meet one of the following criteria:

Academic/Non-Profit: You are using the Software for academic research, education, or within a registered non-profit organization.

Indie Developer / Small Business: You are an individual developer or a business entity with annual gross revenues (or funding) of less than $100,000 USD (or local equivalent). This license allows the use of the uCalc SDK for internal and commercial projects, provided the revenue threshold is not exceeded.

2. ENTERPRISE COMMERCIAL USE (PAID LICENSE REQUIRED)

If you or your organization generates $100,000 USD or more in annual gross revenue, you are no longer eligible for the Community License. Any use of the Software in this capacity requires the purchase of a valid Commercial License.

A Commercial License must be purchased prior to deploying the Software in a production environment.

To purchase a Commercial License, please visit: www.uCalc.com/pricing.

Perpetual Fallback and Updates

Commercial licenses include 12 months of updates and priority technical support. Upon expiration of the 12-month period, the Licensee retains a perpetual, non-exclusive right to continue using the specific major version of the software released during their active subscription.

3. BECOMING A SPONSOR OR SUPPORTER

By paying to become a sponsor or supporter, you are also purchasing a license for the uCalc SDK product.

4. PREVIEW STATUS AND PERFORMANCE (AS-IS)

The Software is currently provided as a "Preview Release." The Licensee acknowledges that the current version of the library (including the core engine and string manipulation components) is not fully optimized for execution speed or memory efficiency, and functionality may not always match what is documented or intended. The Software is provided "AS IS," without warranty of any kind, express or implied.

5. MARKETING AND LOGO USAGE

In order for your avatar, personal name, or company logo to be featured on the website's customer/sponsor roster, you must first opt in for this during checkout, or send an email with explicit consent for this afterwards. For a logo, you should submit a high resolution image.

6. CROSS-LANGUAGE AND PLATFORM USAGE

The Licensee is permitted to use the same uCalc SDK license to develop applications targeting supported programming languages, including C#, C++, and VB.NET across Windows, macOS, and Linux operating systems.

7. RESTRICTIONS

Whether using the Community or Commercial license, you may not:

Sell, rent, lease, or sub-license the Software as a standalone component.

Create a direct competitor product that exposes the uCalc API as its primary functionality.

Remove or alter any copyright notices or proprietary markings within the Software.

Reverse engineer the Software.

8. REFUND POLICY AND RIGHT OF WITHDRAWEL

The uCalc SDK provides a fully functional Free Community edition with no time limits, allowing users to thoroughly test the software for compatibility and feature fit prior to purchasing a commercial license.

Due to the immediate delivery license of digital goods, all sales are final. By completing a purchase, the Licensee expressly consents to the immediate provision of the digital license and acknowledges the waiver of any statutory right of withdrawal or refund (including the EU 14-day right of withdrawal).

9. DISCLAIMER OF WARRANTY

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

In no event shall uCalc be liable for any direct, indirect, incidental, or consequential damages arising out of the use or inability to use the Software.