Terms of Service

Last updated: 2026-05-03

By purchasing or using Cullstack, you agree to these terms. They are written in plain language because we want you to actually read them. If anything is unclear, email legal@aviastone.com.

1. License grant

A Cullstack license grants you a non-exclusive, non-transferable right to install and use Cullstack on up to three (3) devices that you own or control, for personal or commercial purposes. Cullstack is licensed on an annual term with perpetual use rights, as described in Section 3.

2. Refunds

We offer full refunds within 14 days of purchase, no questions asked. Email sales@aviastone.com with your license key and we'll process the refund the same business day.

3. Annual term, updates, and perpetual use rights

Cullstack is licensed annually. While your license is active, all updates released during your term are included. If you choose not to renew, your license converts to perpetual use of the last version released during your active term — it keeps working indefinitely, without further updates. Renewals are offered at a loyalty discount (40% off) that stays locked as long as you keep renewing; if your license lapses for more than 30 days, renewing later starts again at full price.

4. Restrictions

You may not redistribute, resell, sublicense, or reverse-engineer Cullstack. You may not remove license-validation mechanisms or use Cullstack in ways that violate applicable law. Studio / volume licensing is available — contact sales@aviastone.com.

5. No warranty

Cullstack is provided "as is", without warranty of any kind, express or implied, including but not limited to fitness for a particular purpose. While we work hard to make Cullstack stable and reliable — particularly with large libraries — you are responsible for maintaining your own photo backups.

6. Limitation of liability

To the fullest extent permitted by law, Aviastone LLC's total liability arising from your use of Cullstack is limited to the amount you paid for your license. We are not liable for any loss of data, lost photos, or consequential damages.

7. Changes to these terms

We may update these terms occasionally. Material changes will be posted on this page and emailed to active licensees. Continued use of Cullstack after notice constitutes acceptance.

8. Governing law

These terms are governed by the laws of the Commonwealth of Virginia, United States. Disputes will be resolved through binding arbitration in Virginia, except where applicable consumer protection law provides for local jurisdiction.

Contact

Aviastone LLC
Email: legal@aviastone.com