Harvest
Combined time tracking and invoicing REST API for logging time entries, managing projects/clients/tasks, generating invoices from time data, and processing payments.
Best When
You need combined time tracking AND invoicing in a single API, particularly for freelancers or agencies that bill clients based on tracked hours.
Avoid When
You only need time tracking without invoicing — Toggl is simpler and cheaper for that use case.
Use Cases
- • Automating invoice generation by pulling time entries and creating invoices via API
- • Logging time entries from agent task completions into project billing records
- • Retrieving project budget and time-to-completion data for agent reporting
- • Syncing time data to accounting systems (QuickBooks, Xero) via Harvest's data
- • Building custom dashboards over Harvest time and budget data
Not For
- • Simple time tracking without invoicing (Toggl is cheaper and simpler)
- • Enterprise resource planning or complex project management
- • High-volume time entry imports (rate limits apply)
- • Applications requiring real-time time tracking push notifications
Alternatives
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Scores are editorial opinions as of 2026-03-01.