End-User License Agreement
Last updated: August 10, 2026
This agreement governs your use of the ChakataStat desktop application (the “Software”), published by Edward Amani. ChakataStat is proprietary software offered free of charge: you may install and use it, but it is not open source and it is not yours to copy or pass on. By installing or using the Software you accept these terms.
The short version
- Free to install and use — for personal, academic and commercial work alike.
- Get it from an official channel; everyone who wants it gets their own copy the same way.
- Don't share, repost, or redistribute copies of the Software.
- Don't modify, reverse engineer, or repackage it.
- Your data and your results are entirely yours.
What you may do
You are granted a non-exclusive, non-transferable, revocable license, free of charge, to:
- download the Software from an official distribution channel — the stores and download links published at chakatastat.app;
- install and run it on devices you own or control; and
- use it for any lawful purpose, including commercial, academic and personal work.
You may keep a private backup of your installer. That is the only copying this license permits.
What you may not do
Except with prior written permission, you may not:
- redistribute the Software — do not share copies with others, bundle it with other products, mirror it, or make it available for download anywhere. Each user must obtain the Software themselves, from an official channel;
- copy it beyond what installing, running and a private backup require;
- modify it, translate it, or create derivative works from it;
- reverse engineer, decompile or disassemble it, except to the extent a law that applies to you expressly permits it despite this term;
- rent, lease, lend, sell or sublicense it; or
- remove or alter its copyright, trademark or attribution notices.
Your data and your results
Everything you create with ChakataStat is yours. Your datasets remain your own, and the outputs you produce — results tables, charts, reports, exported files — belong to you and may be used, published and shared freely, in papers, theses, reports or anywhere else. Citing the Software (Help → How to Cite) is appreciated but is a scholarly convention, not a condition of this license. How the app handles your data is described in the privacy policy.
Ownership
The Software is licensed, not sold. Edward Amani retains all right, title and interest in the Software, including all copyright and the ChakataStat name and logo. No rights are granted beyond those expressly stated here.
Third-party components
The Software includes open-source components from third parties. Their licenses and attributions ship with the app in its NOTICES file; those components remain governed by their own licenses.
Updates and store terms
Updates and new versions are provided under these terms unless a revised license accompanies them. Where you install ChakataStat through a store — the Microsoft Store, the Snap Store, or Flathub — that store's own terms apply alongside this license.
No warranty
The Software is provided “as is”, without warranty of any kind, express or implied, including merchantability, fitness for a particular purpose and non-infringement. Statistical results depend on your data and your choice of method; you are responsible for verifying that outputs are appropriate for the decisions you base on them. ChakataStat's numerical validation practices are described on the validation page, but no warranty of accuracy is made.
Limitation of liability
To the maximum extent permitted by law, Edward Amani shall not be liable for any indirect, incidental, special or consequential damages, or any loss of data, profits or business, arising from the use of or inability to use the Software, even if advised of the possibility of such damages.
Termination
This license ends automatically if you breach its terms. On termination you must stop using the Software and delete your copies. The sections on ownership, no warranty and limitation of liability survive termination.
Changes to these terms
If these terms change, this page will be updated and the new terms will apply to versions of the Software released after the change. The version of these terms in effect when you obtained your copy governs that copy.
Contact
Permission requests and questions about this license can be sent to tembocs101@gmail.com.