Solo freelance developers juggle multiple client projects, invoicing deadlines, and scope creep—all without a project manager. The ideal tool balances task tracking, time logging, and invoicing without bloat. This guide compares Todoist, Linear, Notion, GitHub Projects, and ClickUp’s free tier, covering simplicity, time tracking, invoicing integration, and true cost per developer.
The Solo Developer’s PM Challenge
Unlike teams using enterprise PM tools, solo developers need:
- Quick task capture without meetings or ceremony
- Time tracking linked to billable hours
- Client/project segmentation to track profitability per client
- Invoicing integration to reduce manual entry
- Low monthly cost (tools must pay for themselves in saved admin time)
Most enterprise PM tools (Jira, Monday.com) are overkill and expensive. Most simple task managers (Apple Reminders, Sticky Notes) lack time tracking. The sweet spot exists between Todoist and Linear.
Todoist: Simple, Fast, Affordable
| Pricing: Free | $4/month (Pro) | $6/month (Business) |
Pro tier includes:
- Unlimited projects (free is 5 projects max)
- Recurring tasks
- Custom filters and saved searches
- Project templates
- File attachments
- Integrations: Zapier, Gmail, Slack, Calendar
Strengths:
- Fastest task capture (QuickAdd feature, Inbox paradigm)
- Excellent mobile experience
- Calendar view showing tasks over time
- Labels/filters for client segmentation
- Natural language parsing (“Review contract Thursday 2pm”)
Weaknesses:
- No built-in time tracking
- No native invoicing or billing features
- Cannot track time spent per task
- Limited reporting (no billable hours summaries)
- No project templates for development workflows
Real-world workflow for solo freelancer:
- Client Acme Corp requests a React dashboard feature
- Create project “Acme Corp 2026” with labels (@acme, @frontend, @urgent)
- Add task: “Build React dashboard component” Due date: Friday, Label: @acme, Priority: P1
- Use Todoist timer while coding (manual start/stop; no integration with external time trackers)
- End of month: manually tally hours per client using Todoist’s reports
The gap: No way to link hours tracked to invoicing. You’ll still need a spreadsheet or separate invoicing tool.
Monthly cost for solo developer using Todoist Pro:
Todoist Pro: $4/month
Integrations needed (time tracking plugin): $0 (manual tracking) or +$5-10/month (Toggl integration via Zapier)
Total: $4-14/month
Time saved annually: ~8-12 hours (manual invoice prep reduced)
Best for: Developers who prefer simplicity, don’t need native time tracking, and are comfortable with manual invoicing links.
Linear: Engineering-Focused, Professional
| Pricing: Free | $10/month (Pro, per member) | Custom (scale) |
Pro tier includes:
- Unlimited projects and issues
- Cycles (sprints) with burndown charts
- Custom states and workflows
- Labels, priorities, estimates
- Integrations: GitHub, Slack, Discord, Zapier
- API access for custom automation
Strengths:
- GitHub integration (auto-link PRs to issues, auto-close issues on merge)
- Fastest UI for developers accustomed to GitHub
- Keyboard shortcuts and VIM mode
- Powerful filtering and search
- Cycles/sprints for planning and retrospectives
- Detailed issue templates per project
Weaknesses:
- No built-in time tracking or invoicing
- Assumes team structure (cycles, statuses designed for multi-person teams)
- Overkill for simple freelance work
- $10/month minimum cost (can’t be cheaper for heavy users)
- No calendar view for deadline visualization
Real-world workflow for solo freelancer:
- Create Linear workspace: “Freelance Dev Work”
- Create projects: “Acme Corp”, “Beta Inc”, “Personal Projects”
- For each project, create issues: “Implement authentication”, “Fix login bug”, “Deploy to production”
- Link GitHub PRs directly: PR titled “Fix #ACM-5” auto-links to Linear issue
- Use Cycles to group 2-week sprints and estimate points
- Export issues at month-end for invoicing (no native invoice export)
The gap: No time tracking or invoice generation. You’re relying on Linear for organization, not billing.
Monthly cost:
Linear Pro: $10/month
Time tracking plugin (Toggl, Harvest): $8-15/month
Invoicing tool (Wave, Stripe Invoicing): $0-10/month
Total: $18-35/month
For a freelancer billing $100-150/hour, the time savings from fast issue management justify this cost, but Linear doesn’t reduce invoicing overhead.
Best for: Developers with GitHub-heavy workflows who want professional issue tracking but are willing to use separate tools for time tracking and invoicing.
Notion: Flexible, Customizable, All-in-One
| Pricing: Free | $10/month (Plus) | $20/month (Business) |
Free tier includes:
- Unlimited blocks and databases
- Basic collaboration (1-5 invited guests)
- Public sharing
Plus tier ($10/month) adds:
- Up to 100 guests
- Advanced permissions
- Synced databases
- Templates
- Version history
Strengths:
- Fully customizable: design your own PM layout
- Single platform for tasks, notes, invoices, and time tracking
- Database relations: link tasks to clients, projects, and time entries
- Formula support: auto-calculate billable hours by client
- Template gallery with freelance-specific templates
Weaknesses:
- Slower than Linear or Todoist for quick task capture
- No native time tracking timer
- Limited integrations compared to Todoist/Linear
- Requires setup time to build initial structure
- Performance degrades with very large databases (10K+ pages)
- Mobile experience is clunky compared to Todoist
Real-world workflow for solo freelancer using Notion:
Create three linked databases:
1. Clients Database: | Client Name | Hourly Rate | Contact Email | Notes | |—|—|—|—| | Acme Corp | $120/hr | contact@acme.com | Prefers weekly updates | | Beta Inc | $150/hr | dev@betainc.com | API project |
2. Projects Database (linked to Clients): | Project Name | Client | Status | Deadline | Billable Hours | Total Cost | |—|—|—|—|—|—| | React Dashboard | Acme Corp | In Progress | 2026-03-31 | 24 | $2,880 | | API Integration | Beta Inc | On Hold | 2026-04-15 | 12 | $1,800 |
3. Time Entries Database (linked to Projects & Clients): | Date | Project | Duration (hrs) | Task | Billable | Notes | |—|—|—|—|—|—| | 2026-03-20 | React Dashboard | 4 | Component refactor | Yes | Finished drag-drop | | 2026-03-20 | API Integration | 1 | Debugging | Yes | SSL cert issue |
Use Notion formulas to auto-calculate:
Total Cost = [Billable Hours] × [Client].[Hourly Rate]
Monthly Revenue = Sum(all [Total Cost] where [Date] >= Month Start)
Then generate an invoice from this data using Notion’s export or a Zapier integration to Wave or Stripe.
Monthly cost:
Notion Plus: $10/month
Time tracking plugin (manual or Toggl): $0-15/month
Invoicing integration (Zapier to Wave): $0-10/month
Total: $10-35/month
Notion is the most flexible option but requires initial setup (4-8 hours to build a professional structure).
Best for: Developers who want a single tool for all freelance operations and are willing to spend setup time configuring it.
GitHub Projects: Free, Lightweight, Already There
Pricing: Free (included with GitHub)
Features:
- Issue board view (Kanban)
- Table view with filtering
- Custom fields and automation
- Linked to GitHub repositories
- Basic reporting
Strengths:
- Zero marginal cost (already using GitHub for code)
- Seamless PR-to-issue linking
- Quick setup if you already use GitHub Issues
- Dark mode, keyboard shortcuts
- Automation: auto-move cards when PRs merge
Weaknesses:
- No time tracking or invoicing
- Minimal reporting capabilities
- Not designed for multi-project freelance work
- Lacks client/project segmentation UI
- No templates or workflow management
- Limited mobile experience
Real-world workflow:
- Create a personal GitHub organization “freelance-work”
- Create public repos: “acme-corp-work”, “beta-inc-work”
- Use GitHub Issues for tasks per project
- Link PRs: “Fixes #acme-corp-work/42”
- Use GitHub Projects board to visualize current work
- Export issues at month-end (manual copy into invoice)
The gap: This only works if your client work is in GitHub repos. If you’re building things without version control, GitHub Projects adds no value.
Monthly cost:
GitHub Projects: $0/month
Time tracking (manual): $0/month
Invoicing (spreadsheet): $0/month
Total: $0/month
True zero cost, but manual invoicing and time tracking offset the savings.
Best for: Developers who already manage client work in GitHub repos and want to avoid additional SaaS subscriptions.
ClickUp: Free Tier for Freelancers
| Pricing: Free | $10/month (Unlimited) | $19/month (Business) |
Free tier includes:
- Unlimited tasks and spaces
- 100MB file storage
- Basic integrations
- Time tracking with native timer
- Portfolio view for freelance work
- Up to 5 guests
Unlimited tier ($10/month) adds:
- Unlimited file storage
- Advanced integrations (Slack, Zapier, custom webhooks)
- Automation
- Custom fields and statuses
Strengths:
- Free native time tracking with timer
- Portfolio view showing time per project
- Task templates for recurring work
- Native Pomodoro timer
- Excellent for multi-client segmentation
- Free tier is genuinely feature-rich
Weaknesses:
- UI is cluttered (many features can feel overwhelming)
- Steeper learning curve than Todoist
- Mobile app has performance issues
- No native invoicing (must export and manually create)
- Integrations with Wave/Stripe require Zapier ($10/month extra)
- Reporting is less polished than Linear or Notion
Real-world workflow:
- Create ClickUp workspace “Freelance”
- Add clients as separate spaces: “Acme Corp”, “Beta Inc”
- Create tasks under each with time tracking enabled
- Start the timer when beginning work, stop when done
- ClickUp tracks hours per task and project automatically
- Portfolio view shows total hours and estimated earnings
- Export time entries and manually create invoices
Monthly cost:
ClickUp Unlimited: $10/month
Native time tracking: $0 (included)
Invoicing integration (Zapier + Wave): $10/month
Total: $20/month
Time saved vs. manual tracking: 2-3 hours/month (invoicing automation)
ClickUp’s free tier is competitive, but reaching full freelance functionality requires the Unlimited tier and a Zapier subscription.
Best for: Freelancers who want native time tracking without upgrading beyond $10-20/month, and don’t mind dealing with reporting that’s less polished than competitors.
Comparison Table
| Feature | Todoist | Linear | Notion | GitHub Projects | ClickUp Free |
|---|---|---|---|---|---|
| Base Cost | $4 | $10 | $10 | $0 | $0 |
| Time Tracking | Manual | No | Manual | No | Native timer |
| Invoicing Integration | Via Zapier | Via Zapier | Via Zapier | Manual | Via Zapier |
| Mobile Experience | Excellent | Good | Fair | Poor | Fair |
| Learning Curve | 30 min | 1-2 hours | 4-8 hours | 30 min | 2-3 hours |
| Best for Scope Creep | Good (tagging) | Excellent (issues) | Excellent (relations) | Good (linking) | Good (portfolio) |
| Reporting | Basic | Advanced | Advanced (formulas) | Basic | Good (built-in) |
| Customization | Low | Low | Unlimited | Low | Medium |
| Integrations | Excellent (Zapier) | Good | Good (Zapier) | Good (GitHub) | Excellent (Zapier) |
Recommended Freelance Stack by Budget
Under $10/month (most cost-conscious):
- GitHub Projects + Notion for invoicing + Toggl for time tracking
- Total: $0 + $10 + $0 = $10/month (Notion plus tier)
- Trade-off: Manage work in GitHub, time elsewhere, invoices in Notion
$10-20/month (simplicity + time tracking):
- ClickUp Unlimited + Manual invoicing
- Total: $10/month (ClickUp) + manual work
- Best all-in-one without additional tools
$15-25/month (professional setup):
- Todoist Pro + Toggl (time tracking) + Wave (invoicing)
- Total: $4 + $10 + $0 = $14/month
- Cleanest separation of concerns, least bloated
$25-35/month (full automation):
- Notion + Zapier + Wave
- Total: $10 + $10 + $0 = $20/month (with Zapier)
- Most powerful custom setup, highest setup time
$35/month (outsource-everything):
- Linear + Toggl Track + Stripe Invoicing
- Total: $10 + $9 + $0 = $19/month
- Engineer-optimized stack with professional tools
My Recommendation for Solo Freelancers
For the majority of solo developers, Todoist Pro + Toggl Time Tracking + Wave Invoicing is the optimal stack:
- Todoist ($4) for fast task capture and project segmentation
- Toggl ($9/month personal) for time tracking with professional reports
- Wave ($0) for free invoicing with Todoist/Toggl integration via Zapier
Total: ~$14/month with clear separation of concerns and professional-grade output.
If you want everything in one tool and don’t mind setup time, Notion Plus ($10) with time-tracking scripts offers the best long-term value.
If you want the simplest “do it all” solution, ClickUp Free or Unlimited ($0-10) includes native time tracking, but you’ll still need to handle invoicing manually or via Zapier.
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