Calendars · head to head
Clockify vs Spark Mail

Spark Mail
Productivity
AI-assisted email client from Readdle with a Smart Inbox and team collaboration features
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Clockify the free plan stops at 5 users; Spark Mail several sync features route mail metadata and, for some features, credentials through Readdle servers, which is a materially different trust model from a local-only IMAP client.
- They diverge on capability: Clockify covers Timer & manual time entry, Spark Mail covers Smart Inbox.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Clockify and Spark Mail actually diverge.
| Attribute | Clockify | Spark Mail |
|---|---|---|
| Pricing model | freemium | Per user per month |
| Platforms | Web, Windows, Macos, Linux, Ios, Android, Browser-extension | macOS, Windows, iOS, Android, Web |
| Category | Calendars | Productivity |
| Founded | 2017 | Unknown |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Clockify
- Timer & manual time entry
- Timesheets
- Calendar view
- Projects & tasks
- Reports & analytics
- Team dashboard
- Kiosk mode
- Offline mode
Only in Spark Mail
- Smart Inbox
- AI Copilot
- AI Summaries
- Team collaboration
- Send later and snooze
- Multi-account unified inbox
What people use each for
The jobs each tool is most often brought in to do.
Clockify
- Employee time trackingnot Spark Mail
- Project time budgetsnot Spark Mail
- Client billingnot Spark Mail
- Productivity analysisnot Spark Mail
- Payroll calculationnot Spark Mail
Spark Mail
- A freelancer juggling Gmail and Outlook accounts who wants one AI-assisted inboxnot Clockify
- A small support team sharing a single inbox with internal notes before replyingnot Clockify
- Someone who wants drafts and summaries generated without switching to a new mail hostnot Clockify
- A user who wants notification triage without writing their own filtersnot Clockify
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Clockify
- The free plan stops at 5 users
- Free accounts are throttled to 30 API requests per hour and 3 webhooks
- Reporting on the free plan only covers a 1 month range
- Invoicing needs Standard at $5.49 per seat per month and GPS tracking needs Pro at $7.99
- SSO, SCIM provisioning, a custom subdomain and the audit log are Enterprise only at $11.99 per seat per month
Spark Mail
- Several sync features route mail metadata and, for some features, credentials through Readdle servers, which is a materially different trust model from a local-only IMAP client.
- It is a client over accounts you still pay for elsewhere, so the total cost is Spark plus whatever Gmail, Outlook or Fastmail plan you already hold.
- The free tier lacks AI Copilot and summaries, so the features it is best known for sit behind the paid plan.
- Team features are basic next to dedicated shared-inbox tools like Front or Help Scout, so a support team scaling past a few agents will likely outgrow it.
- Windows and Android versions have historically lagged the macOS and iOS apps in feature parity.
Pricing, plan by plan
Clockify
Free- FreeFree
- Unlimited time tracking
- Up to 5 users
- Timer, timesheet, auto-tracker, calendar
- Basic$4.99/month
- All Free features
- Kiosk access, bulk editing, project templates
- Time import/export
- Standard$6.99/month
- All Basic features
- Invoicing, time-off management, approvals
- QuickBooks integration, overtime tracking
- Pro$9.99/month
- All Standard features
- Scheduling, forecasting, expenses, GPS tracking
- Custom fields, labor cost analysis, budgeting
Spark Mail
Free- BasicFree
- Unlimited accounts
- Smart Inbox
- Basic send later
- Premium$7.99/month
- AI Copilot and summaries
- Unlimited snooze and send later
- Priority support
- Premium Teams$10/month
- Shared inboxes
- Delegation and internal comments
- Admin controls
Which should you pick?
Choose Clockify if
- You need timer & manual time entry.
- You want to start without paying.
- You work on Web, Windows, Macos, Linux, Ios, Android, Browser-extension.
- You also want timesheets.
Choose Spark Mail if
- You need smart inbox.
- You want to start without paying.
- You work on macOS, Windows, iOS, Android, Web.
- You also want ai copilot.
Questions people ask
- Is Clockify or Spark Mail better?
- Neither clearly leads. Clockify starts at Free and Spark Mail at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Clockify or Spark Mail?
- Clockify starts at Free and Spark Mail at Free.
- Does Clockify or Spark Mail run on more platforms?
- Clockify runs on Web, Windows, Macos, Linux, Ios, Android, Browser-extension. Spark Mail runs on macOS, Windows, iOS, Android, Web.
- Can I use Clockify for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Clockify best used for?
- Clockify is most often used for employee time tracking, project time budgets, client billing, productivity analysis. Of those, employee time tracking and project time budgets are not what Spark Mail is typically brought in for.
- What can Clockify do that Spark Mail cannot?
- Clockify covers Timer & manual time entry, Timesheets, Calendar view, Projects & tasks. Spark Mail covers Smart Inbox, AI Copilot, AI Summaries, Team collaboration.
Answered from the vendors’ own pages
Clockify: How much does Clockify cost?
Clockify Free is free for up to 5 users with unlimited time tracking. Paid plans per-seat per-month are Basic $4.99, Standard $6.99, Pro $9.99, and Enterprise $14.99 (monthly). Annual billing offers 20% discount.
SourceSpark Mail: Does Spark host my email?
No. It is a client that connects to Gmail, Outlook, iCloud or any IMAP account; you still need a mail host.
Clockify: Can I use Clockify for free?
Yes, Clockify Free offers unlimited time tracking, timer, timesheet, auto-tracker, calendar, and reports for up to 5 users.
SourceSpark Mail: Does Spark store my email credentials on its servers?
For some features, including cross-device snooze and send-later sync, yes. It is part of how those features stay consistent across devices.
Clockify: How much savings do I get with annual billing?
Annual billing saves 20% versus monthly. For example, Basic is $3.99/seat annually ($47.88/year) versus $4.99/seat monthly ($59.88/year).
SourceSpark Mail: Is there a one-time purchase option?
No, Spark is subscription only for individuals and teams; the base client is free but AI and unlimited scheduling need Premium.
Clockify: What is the most expensive Clockify plan?
Enterprise plan is $14.99/seat/month (monthly) or $11.99/seat/month (annual) and includes SSO, custom subdomain, SCIM provisioning, audit logs, and account controls.
SourceRelated pages
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