Tuttle review
A local-first desktop tool for tracking time and creating freelance invoices.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Tuttle is free, open-source desktop software for solo freelancers who want to manage time, paperwork, and invoicing locally. It runs on Windows, macOS, and Linux, with data stored and processed on the user’s device. Calendar events, calendar files, and time-tracking data can be imported, then organized by client and project. Users can also enter time manually, generate invoices and timesheets, handle fixed-price contracts, export invoices to PDF, and send them by email.
Its strongest area is the combination of time capture and freelance financial administration. Tuttle supports tax and VAT estimates, revenue forecasting, and salary calculations alongside invoice creation. It also supports Factur-X and ZUGFeRD electronic invoices, which suits freelancers who need structured European invoice formats. AI-assisted extraction can pull data from invoice and contract PDFs, while local processing keeps the workflow centered on the desktop. The published product details describe Tuttle as free, with no account and no trial period, making it a straightforward option for users who prefer open-source software without a paid-plan structure.
The trade-off is its narrow platform and workflow focus. Tuttle is designed for desktop use rather than mobile work, and its described capabilities do not include billable-rate support. The workflow is built around calendar imports, time-tracking data, local records, and generated documents rather than a documented ecosystem of connected services. Choose Tuttle if you are a solo freelancer comfortable managing billing from Windows, macOS, or Linux and want local control over time and invoice data. Choose another tool if mobile access, rate-based billing, or a wider integration model is central to your work.
Tuttle pros and cons
- Where it wins
- Free, open-source software for Windows, macOS, and Linux
- Generates invoices and timesheets from tracked or entered time
- Supports taxes, VAT, forecasting, and electronic invoices
- Where it doesn't
- No mobile apps for managing work away from the desktop
- Billable-rate support is not included in the described workflow
- Its documented workflow does not include a broad integration ecosystem
Tuttle fact sheet, pricing and score →
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