Last updated November 12, 2026
This agreement is between you and Epiforge Software, LLC (“Epiforge”) and covers Grindstone 5, including its beta, its updates and its documentation (“Grindstone”). By installing or using Grindstone, you agree to it. If you install or use Grindstone for an organization, you agree for that organization and confirm that you’re allowed to. If you don’t agree, don’t install or use Grindstone.
Our Terms of Use and Privacy Policy also apply.
Your license
Grindstone is licensed, not sold. Epiforge gives you a personal, non-exclusive, non-transferable license to install Grindstone on devices you own or control and to use it, for personal or business purposes, while you follow this agreement. The Grindstone 5 beta is free.
Any edition or service Epiforge offers for Grindstone in the future, including workspaces hosted by Epiforge or by you (Grindstone Cloud and Grindstone Server), may come with additional terms, which you’ll see before you use it.
What you may not do
Except where the law allows it despite this agreement, don’t:
- copy, host or distribute Grindstone, or make it available to others, except by pointing them to Epiforge’s downloads;
- sell, rent, lend or sublicense it;
- reverse engineer, decompile or disassemble it;
- remove or alter its notices, or the notice that it’s a beta;
- get around any technical limits in it.
The beta
The beta is a preview of Grindstone 5 before its launch. It may have bugs, change without notice, or lose data, and it shouldn’t be relied on for production work. Export your folios from time to time so you have a copy. After Grindstone 5 launches, the beta keeps working but stops getting regular updates; the launch release is a separate app you’ll move your folios into by exporting and importing them.
Your data
Your folios are files on your own device. Epiforge doesn’t receive them and can’t recover them for you. You’re responsible for keeping copies of anything you can’t afford to lose. On Windows, uninstalling Grindstone deletes the folios kept in its own folder, so export them first.
What Grindstone sends Epiforge
Grindstone sends Epiforge a small daily count of which versions are in use, which you can turn off in Settings, and sends a report or a message only when you choose to. Privacy in Grindstone’s documentation and our Privacy Policy describe exactly what’s sent and what isn’t.
Updates
Grindstone may update itself, for example through Windows’ App Installer. Updates are part of Grindstone and covered by this agreement.
AI agents and presets
Grindstone can write instructions for an AI agent you choose to use, and can take presets from files and agents. Grindstone doesn’t send anything to an AI agent; you decide what to give it, and that service’s own terms apply. Epiforge isn’t responsible for what an agent or a preset file from someone else produces; Grindstone checks a preset and shows you what it will set up before it does.
Other software in Grindstone
Grindstone includes software from others under their own licenses. Those licenses apply to those components, and nothing in this agreement limits your rights under them.
Ending this agreement
You can end this agreement at any time by uninstalling Grindstone. It ends automatically if you break it. When it ends, stop using Grindstone and uninstall it. The sections on disclaimers, limits on liability and disputes continue after it ends.
Disclaimers
Grindstone is provided “as is” and “as available,” with all faults. To the extent the law allows, Epiforge disclaims all warranties, express or implied, including warranties of merchantability, fitness for a particular purpose, title, non-infringement and accuracy, and any warranty that Grindstone will work without interruption or errors, will keep your data, or that its timing, calculations or reports will be correct. Check anything important, such as time you bill for, before you rely on it. Some places don’t allow some of these disclaimers, so they may not all apply to you.
Limits on liability
To the extent the law allows:
- Epiforge isn’t liable for any indirect, incidental, special, consequential or punitive damages, or for lost profits, revenue, data or goodwill, arising from or related to Grindstone or this agreement, even if we were told they were possible.
- Epiforge’s total liability for all claims arising from or related to Grindstone or this agreement is limited to the greater of the amount you paid Epiforge for Grindstone in the 12 months before the event giving rise to the claim, or $50.
These limits apply whatever the legal theory, and even if a remedy fails of its essential purpose. Some places don’t allow some of these limits, so they may not all apply to you.
Export and use laws
You may not use, export or re-export Grindstone in violation of United States export control or sanctions laws, or where those laws forbid it.
Disputes
This agreement is governed by the laws of the State of Georgia, without regard to its conflict-of-laws rules. Any dispute arising from or related to Grindstone or this agreement will be brought only in the state or federal courts located in Fulton County, Georgia, and you and Epiforge consent to those courts’ jurisdiction. Either of us may instead bring a claim in small claims court where it qualifies. You and Epiforge each bring claims only individually, not as a plaintiff or class member in a class or representative action.
General
- Epiforge may change this agreement. Changes apply to versions of Grindstone released after the change; the date at the top of this page says when it last changed.
- If any part of this agreement can’t be enforced, the rest stays in effect.
- If we don’t enforce a part of this agreement, that isn’t a waiver.
- You may not transfer this agreement. We may transfer it as part of a sale or reorganization of our business.
- For software used by or for the United States government, Grindstone is “commercial computer software” licensed under this agreement.
Contact
Epiforge Software, LLC, 760 Old Roswell Road, Roswell, GA 30076, United States. To reach us, use Speak with a specialist.