- Planning problem or invoicing problem?
- Seven differences, laid out side by side
- Who owns what, and where each pitch has drifted
- From tracked hours to a settled invoice
- Capacity, scheduling and an assistant you can ask
- Five questions to settle before you sign up
- My advice: planner or invoicer?
- Other time trackers worth a look
- Frequently asked questions
Pick Toggl if your headache is planning: who has capacity, who's overbooked and what the next project does to margin, with an AI assistant on top of your time data. Pick Harvest if your headache is getting invoices out: tracked hours and expenses become invoices clients can pay online, with reminders and retainers. They're built for different jobs, so neither wins outright.
Picture two agency owners. One keeps finding out on a Thursday that half the team is overbooked and the other half is idle. The other has a spreadsheet of hours that nobody has turned into invoices for three weeks. They'd both type the same two names into Google, and they should walk away with different answers.
That's the whole story of this pair. One tool treats your time data as the raw material for planning. The other treats it as the raw material for an invoice. Work out which of those two owners you are and you're most of the way there.
Planning problem or invoicing problem?
Toggl's homepage pitch is time tracking with capacity planning and project planning in one platform. Its site says time data is the foundation, so past projects feed your next estimate and you can see who has room and who's stretched. Timesheets with approvals, profitability reports and apps for web, desktop and mobile sit underneath that.
The other vendor pitches a loop: track, review, bill, organise and manage. The end of that loop is an invoice that a client can pay straight from the email. Expenses, reporting and invoicing are all in the same place, so hours don't have to be copied anywhere else before they earn you anything.
Seven differences, laid out side by side
| Area | Toggl | Harvest |
|---|---|---|
| Core approach | Time tracking plus capacity planning, with time data as the base for estimates and forecasting | Track, review, bill, organise and manage, ending in invoices clients can pay |
| Invoicing | Billable hours, rates and profitability reports; no client invoice and payment flow described | Invoices built from tracked time and expenses, online payment from the invoice, automatic overdue reminders |
| Planning | Boards, Gantt charts, a calendar planner, utilisation and workload reports, automatic PTO and public holidays | Capacity reporting, plus forecasting, scheduling, time off and what-if scenarios |
| AI help | An AI assistant that answers plain-language questions about hours, logs time and creates projects; MCP server for Claude, Cursor or Codex | No AI assistant described |
| Automatic tracking | Records apps and sites on a timeline, turns calendar events into entries, idle detection | One-click timers, daily or weekly timesheets, calendar-based logging, custom reminders |
| Billing rates | Set at workspace, member, project or project member level, plus fixed fee projects | Multi-tiered rates by person, project or task type, hour or fee limits with live alerts, retainer tracking |
| Integrations | Native integrations, browser extensions, API and MCP; Jira, Asana and GitHub named | 40+ integrations across project management, accounting and payments, plus SAML-based SSO |
Who owns what, and where each pitch has drifted
Harvest sits under Bending Spoons, whose name is on the copyright line in its footer, so it's part of a larger parent rather than an independent studio. That doesn't change what the product does today, but it's worth knowing who's making the calls. The same footer lists Forecast as a separate scheduling product, which tells you scheduling has its own home rather than living fully inside the time tracker.
The other side has moved in a different direction. Its homepage has shifted from a simple timer to what you'd call time intelligence: an AI assistant you can ask about your hours, plus an MCP connector that links your time data to Claude, Cursor or Codex. The invoicing tool, by contrast, still talks almost entirely about getting hours billed and settled. Neither direction is wrong. They're just heading for different buyers.
From tracked hours to a settled invoice
This is where the gap is widest. The billing-first tool builds invoices from tracked time and expenses, lets clients pay online from the invoice through PayPal or Stripe, and chases late ones with automatic overdue reminders. It syncs with QuickBooks Online and Xero, and handles recurring retainer invoices too.
Rates go deep as well. You can set multi-tiered billing rates by person, project or task type, cap a project by hours or fees with live alerts, and track retainers as they burn down. If you sell time to clients for a living, that's the part of the job you'll feel every month.
The planning-first tool does handle rates, at workspace, member, project or project member level, and it supports fixed fee projects. Its strength is the profitability report rather than the invoice itself, though. If you need clients to settle bills from inside the app, its site doesn't describe that flow.
Capacity, scheduling and an assistant you can ask
On planning, the time-intelligence tool gives you boards, Gantt charts and a calendar planner, with utilisation and workload reports. It handles PTO and public holidays automatically, which matters more than it sounds when you're trying to work out who's free next week.
Its tracking side is also more automatic. It records the apps and sites you use on a timeline and lets you decide what becomes an entry, can turn calendar events into entries, and nudges you when it spots idle time. The billing-first tool keeps things simpler with one-click timers, daily or weekly timesheets, calendar-based logging and custom reminders.
The AI piece is one-sided. You can ask the planning tool plain-language questions about hours, or have it log time and create projects for you. The invoicing tool's site doesn't describe an AI assistant. If you'd like to run your time data through Claude or Cursor, only one of the two offers that today. For a broader look at the category, our roundup of the best time tracking software covers more options with different strengths.
Five questions to settle before you sign up
- Do clients pay you by the hour or on retainer? If yes, invoices and online payment should weigh heavily.
- Do you lose more sleep over overbooked people or overdue invoices? That one answer usually decides it.
- Does your accountant live in QuickBooks Online or Xero? The billing-first tool names both.
- Would your team rather review an automatic timeline than start and stop timers?
- Do you want to query your time data from an AI tool like Claude or Cursor?
My advice: planner or invoicer?
Choose the planning-first tool if the real problem is knowing who has capacity and what the next project does to margin, and you like the idea of an AI assistant that can answer questions about your hours. Pick the billing-first tool if the real problem is cash: turning hours and expenses into invoices clients can pay online, chasing the late ones and keeping retainers on track. Neither one is the clear all-round winner. They're aimed at different jobs, so let your biggest headache choose for you.
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If you're already leaning away from both, there are dedicated pages for tools that replace Harvest that go into more depth.
Other time trackers worth a look
Clockify
Best for: A broad, simple tracker with a timer, timesheets, kiosk, calendar, scheduling, approvals and invoicing for productivity, attendance and billable hours.
Everhour
Best for: Teams that live in a project management tool and want time tracking, spending limits and alerts inside the tools they already use.
Timely
Best for: Agencies and consultancies selling their time that want automatic time data, with a stated focus on privacy and ISO 27001 compliance.
Hubstaff
Best for: Remote and field teams needing payroll-grade hours, with productivity monitoring, payments and invoicing in one place.
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Frequently asked questions
Can Toggl send invoices that clients pay online?
Its site stresses billable hours, rates and profitability reports, but it doesn't describe a client invoice and payment flow. The billing-first tool does, with PayPal and Stripe named.
Who owns Harvest?
Its footer shows it under Bending Spoons Operations S.p.A., so it sits within a larger parent company rather than running as an independent studio.
Which one is better for capacity planning?
The planning-first tool leads on it, with boards, Gantt charts, a calendar planner and workload reports. The invoicing tool offers capacity reporting and scheduling, with Forecast listed as a separate product.
Does either one have an AI assistant?
Only one. You can ask the planning tool questions about your hours in plain language, and an MCP server links your data to Claude, Cursor or Codex. The billing tool's site doesn't describe an AI assistant.
Which works with QuickBooks Online or Xero?
The billing-first tool names sync with both, alongside 40+ integrations. The planning tool names Jira, Asana and GitHub among its integrations.
