Best Time Tracking Apps That Sync With Invoicing
The expensive part of freelance operations is not starting a timer — it is rebuilding the same hours into an invoice every month. This guide focuses on tools and stacks where tracked time becomes billable lines with minimal copy-paste.
Disclaimer: Integrations and plan gates change. Confirm sync features and pricing on vendor sites. BillTrack Tools is independent; not affiliate by default.
Two architectures that work
| Approach | How it works | Best when |
|---|---|---|
| Native loop | Timer + invoice in one product | You want one login and fewer exports |
| Tracker → invoice tool | Track in A, invoice in B via export/integration | You already love your invoicing app |
Both are valid. Native loops reduce admin. Split stacks let you pick best-of-breed tools.
Top picks for freelancers
1) Harvest — classic time-to-invoice
Harvest is the reference design: track billable time, add expenses, generate invoices, collect payment. Free plan exists but is tiny (often 1 seat / 2 projects). Paid Teams unlocks a fuller freelancer/agency loop and accounting sync options such as QuickBooks Online or Xero (verify current integrations).
Pros: Clearest billing mental model; invoices feel native.
Cons: Free plan outgrown quickly; per-seat pricing adds up with helpers.
2) FreshBooks — invoice-first suite with strong time features
FreshBooks approaches from the billing side and pulls unbilled time into invoice drafts. Ideal when client payments and polished invoices matter more than team timesheet operations.
Pros: Excellent client-facing billing; time becomes line items quickly.
Cons: Subscription + client caps on lower tiers; verify current Lite/Plus limits.
3) Clockify — tracker that adds invoicing on paid tiers
Clockify starts as a generous tracker. Invoicing (including recurring on paid) typically arrives on Standard-class plans. There are also paths to push invoice data toward tools like FreshBooks depending on current integrations — confirm in Clockify’s integration directory.
Pros: Cheap seats; start free; grow into invoices.
Cons: Best billing features are not on free; tier maze.
4) Toggl Track + external invoicing — export-first sync
Toggl Track excels at capture. It is usually not an invoice builder. The “sync” is practical: billable reports exported to CSV/PDF, then imported or rekeyed into Wave, FreshBooks, or PayPal. Some accounting integrations appear on higher plans — verify.
Pros: Best-in-class timer habit.
Cons: Extra step every billing cycle unless you automate.
5) Bonsai — freelancer OS with time + invoices (plan-dependent)
Bonsai-style suites combine proposals, contracts, time, and invoices. Useful if you want CRM-ish client flow, not only a timer. Check which plan unlocks invoices vs time tracking — packaging varies.
6) Wave + any tracker — budget split stack
Wave handles free invoicing/bookkeeping well but is not a billable-hours powerhouse. Pair it with free Clockify or Toggl, export hours, and invoice in Wave. Lowest software cost; highest manual glue.
Comparison matrix
| Tool / stack | Native invoices from time | Free meaningful start | Typical freelancer fit |
|---|---|---|---|
| Harvest | Yes | Tiny free | Billing-centric solos |
| FreshBooks | Yes | Trial, then paid | Hourly service pros |
| Clockify Standard+ | Yes | Free tracking first | Budget → upgrade path |
| Toggl + Wave/FreshBooks | Via export/integration | Yes | UX-first trackers |
| Wave + tracker | Manual/light | Yes | Absolute budget |
Recommended stacks by situation
“I invoice weekly and hate spreadsheets.”
→ Harvest or FreshBooks.
“I want free for 90 days, then maybe pay.”
→ Clockify free → Standard when invoices annoy you; or Toggl free → Wave invoices.
“Clients already pay in PayPal.”
→ Track anywhere; invoice in PayPal; keep books light.
“I have a VA tracking time too.”
→ Clockify (free user room) or Harvest/FreshBooks paid seats — compare seat math.
Implementation checklist (one afternoon)
- Pick one source of truth for time (do not dual-track).
- Define billable vs non-billable tags on day one.
- Set rates per client/project before the first invoice cycle.
- Decide invoice home (native vs Wave/FreshBooks/PayPal).
- Run a dry-end-of-week: timer report → draft invoice → PDF. If that takes >20 minutes, your stack is wrong.
Pros & cons of syncing at all
Pros of tight sync
- Fewer missed hours
- Faster month-end
- Cleaner client narratives (“here are the 6.5 hours”)
Cons
- Lock-in to a suite
- Per-seat fees
- Overkill for pure fixed-fee freelancers
Fixed-fee freelancers can track for productivity only and invoice milestones without syncing.
FAQ
What is the best app that both tracks time and invoices?
For freelancers: Harvest or FreshBooks. Clockify qualifies once you are on an invoicing tier.
Is Zapier required?
Usually no for native loops. For split stacks, CSV is enough until volume justifies automation.
Will AdSense-style content sites recommend only paid tools?
No — free + export stacks remain rational for early freelancers.
Affiliate links on this page?
No by default.
Bottom line
If you want the shortest path from hour to invoice, choose a native loop (Harvest or FreshBooks). If you want the cheapest path, track free in Clockify/Toggl and invoice in Wave, accepting a small export step. Optimize for the billing friction you feel every Friday — not for the longest feature checklist.