Grindstone

Free plan AndroidiPhoneWindows

What Grindstone is

Grindstone is a time-tracking app for recording work, with project tracking, offline tracking and data export. Start a timer on a work item to create a time slice, or enter a name to make a new work item. After you have been away from your computer, the app asks how to account for that time and adjusts the record. Custom properties let you organize items with fields such as client lists. Filtered views can notify you when entries match their criteria, including due-date and estimate reminders. For reports, export or copy view contents, or use the graph feature to make graphical and tabular representations.

The free Grindstone app is available alongside paid Grindstone Sync options. Sync brings team time tracking together and supports assignments with due dates, estimates and completion dates. Sync Cloud costs $5 a month, billed monthly per active user, for one team per subscription. Sync Server costs $10 a month, billed monthly up front, for one team per server, and can run on a customer’s network with Windows Server and SQL Server licenses. Sync also includes a REST Web API and administrator controls for member permissions and work-item visibility. A 30-day trial is available.

Who it suits

Grindstone suits individuals who want to record work time, organize work items, and track time offline. Teams that need shared tracking, assignments, or administrative controls can consider Grindstone Sync Cloud or Sync Server.

What it does well

Tracks project time offline and supports data export.
Creates a time slice when work on an item starts.
Custom properties can include list fields for clients.
Filtered views can send due-date and estimate reminders.
Reports can be exported, copied, graphed, or shown as tables.
Sync supports team assignments and administrator permissions.

What to know first

Grindstone Sync Server requires Windows Server and SQL Server licenses.
Sync Cloud is limited to one team per subscription.
Sync Server is limited to one team per server.

Limits

The free Grindstone plan is listed as free. Sync Cloud covers one team per subscription; Sync Server covers one team per server and requires Windows Server and SQL Server licenses.

Plans

Plan	Billed and limits	Price
Grindstone	Free app for time tracking	Free
Grindstone Sync Server	per licensed seat · Requires Windows Server and SQL Server licenses; customer hosts the server	$10 a month
Grindstone Sync Cloud	per active user, monthly · One 30-day free trial per team	$5 a month

As epiforge.com lists them, read 11 Oct 2026. The maker's own page has the final word.

Getting started

Visit https://epiforge.com/grindstone/.
Choose the free Grindstone app or review the paid Sync options.
Use the 30-day trial if you want to try a paid option.
For Sync Server, prepare a network with Windows Server and SQL Server licenses.

Verdict

Choose Grindstone for a free way to track work time, including offline, and organize entries with custom fields and filtered views. Teams needing shared tracking can look at Sync, while those who do not need its team features can use the free app.

Questions

Is Grindstone free?

Yes. The Grindstone plan is listed as free.

What do the paid plans cost?

Sync Cloud costs $5 a month, billed monthly per active user, with one team per subscription. Sync Server costs $10 a month, billed monthly up front, with one team per server.

Is there a free trial?

Yes. A 30-day trial is available.

What platforms does Grindstone support?

The listed platforms are Android, iOS, and Windows. The Grindstone 4 manual lists Windows 7 SP1, Windows 8.1, Windows 10, and specified Windows Server versions as supported operating systems.

What does Grindstone Sync add for teams?

Sync brings team time tracking together and supports assignments with due dates, estimates, and completion dates. It also includes a REST Web API and administrator controls.

What support does Epiforge offer?

Epiforge lists tutorial videos, user manuals, a discussion forum, and specialist support.

Facts from Grindstone's own pages

API: Grindstone Sync includes a REST Web API, and administrators can create API keys for third-party access to team data. · support.epiforge.com, 11 Oct 2026
Away time: When you return after leaving your computer, Grindstone asks how to record the time you were away and adjusts the recorded time. · epiforge.com, 11 Oct 2026
Cloud hosting: Grindstone Sync Cloud is hosted in Microsoft Azure and managed and monitored by Epiforge technicians. · support.epiforge.com, 11 Oct 2026
Custom fields: Users can create custom properties, including list properties for items such as clients. · epiforge.com, 11 Oct 2026
Data export: Yes · epiforge.com, 21 Sept 2026
Desktop app: Yes · epiforge.com, 21 Sept 2026
Free plan: Yes · epiforge.com, 21 Sept 2026
Offline tracking: Yes · epiforge.com, 21 Sept 2026
Permissions: Sync administrators can control whether members create, modify, or delete work items and properties, limit how late time slices can be edited, and restrict work item visibility by assignment. · support.epiforge.com, 11 Oct 2026
Project tracking: Yes · epiforge.com, 21 Sept 2026
Purpose: Grindstone is a free app for keeping track of time spent on work. · epiforge.com, 11 Oct 2026
Reporting: Users can export view contents or copy them to the clipboard, and the graph feature can create graphical or tabular representations. · epiforge.com, 11 Oct 2026
Security: Grindstone Sync says passwords are secured with encryption, app connections can be revoked, and communications use SSL encryption. · support.epiforge.com, 11 Oct 2026
Self-hosting requirements: Grindstone Sync Server can run on a customer’s own network and requires Windows Server and SQL Server licenses. · epiforge.com, 11 Oct 2026
Paid from: 5 · epiforge.com, 21 Sept 2026
Support: Epiforge lists tutorial videos, user manuals, a discussion forum, and specialist support as support options. · epiforge.com, 11 Oct 2026
Team features: Grindstone Sync brings team time tracking together and supports assignments with due dates, estimates, and completion dates. · support.epiforge.com, 11 Oct 2026
Time tracking: The timer creates a time slice when you start working on a work item and can create a new work item from its name. · epiforge.com, 11 Oct 2026
Views and reminders: Views can filter tracked entities and notify users when entries meet the view’s filters, including reminders for due dates and estimates. · epiforge.com, 11 Oct 2026
Windows requirements: The Grindstone 4 manual lists Windows 7 SP1, Windows 8.1, Windows 10, and specified Windows Server versions as supported operating systems. · epiforge.com, 11 Oct 2026

Where Grindstone stands on Freedom251

Time Tracking Software#13 of 77
Time tracking apps#40 of 78