We've spent over 1,000 hours testing productivity apps in real-world scenarios - from managing a startup's roadmap to organizing graduate school research. This guide reflects what actually works in 2025, not what pays the highest commission.
How We Tested
Every app in this guide was tested across multiple scenarios:
- Real projects: We used each app for actual work - not just a cursory look
- Cross-platform: Tested on Mac, Windows, iOS, and Android
- Team scenarios: Evaluated collaboration features where applicable
- Long-term reliability: Checked for bugs, crashes, and data sync issues over weeks of use
| App | Best For | Price | Rating | Free Plan |
|---|---|---|---|---|
| Notion | All-in-one workspace | $10/mo | ★ 4.8 | ✅ Yes |
| ClickUp | Project management | $7/mo | ★ 4.7 | ✅ Yes |
| Todoist | Task management | $5/mo | ★ 4.5 | ✅ Yes |
| Obsidian | Knowledge management | $10/mo | ★ 4.6 | ✅ Yes |
| Things 3 | Apple users | $49.99 one-time | ★ 4.4 | ❌ No |
Our Top Picks - In Depth
🥇 Notion Best Overall
$0 personal free › $10/mo teams › $18/mo business
Notion has evolved from a note-taking app into the most versatile productivity platform available. It handles notes, databases, project management, wikis, and more - all in one place.
What sets Notion apart
The database system is genuinely revolutionary. You can create custom views (Kanban, table, calendar, gallery), link related data across databases, and build complex workflows without touching code. The template gallery - both official and community-built - covers everything from OKR tracking to wedding planning.
In our testing, Notion excelled at personal knowledge management and lightweight team documentation. The AI features (included in paid plans) are actually useful for summarization and drafting.
Where it struggles
Large databases (10,000+ items) can become sluggish. Real-time collaboration occasionally has sync delays. The mobile app, while functional, doesn't match the desktop experience - a common complaint among users we surveyed.
For complex project management with multiple team members and intricate dependencies, dedicated tools like ClickUp still edge Notion out.
✅ Pros
- Unmatched flexibility - build virtually any workflow
- Excellent templates for fast setup
- Generous free forever plan
- Strong community with free resources
- Notion AI included in paid plans
❌ Cons
- Learning curve steeper than simple apps
- Can slow with large databases
- Mobile experience not as polished
- Collaboration can have sync delays
🥈 ClickUp Best for Teams
$0 free forever › $7/mo unlimited › $12/mo business
ClickUp is the most feature-dense project management tool on the market. If you need serious PM capabilities with multiple team members, it's unmatched.
What sets ClickUp apart
The number of views available (100+) is genuinely overwhelming - List, Board, Calendar, Gantt, Box, Timeline, and dozens more. The automation builder rivals dedicated tools like Zapier. Goals with OKR tracking, native docs with real-time collaboration, and whiteboards for brainstorming round out an incredible feature set.
In our team testing, ClickUp shined for complex projects with multiple stakeholders, dependencies, and timelines. The mobile apps are actually usable - a stark contrast to Notion.
Where it struggles
The interface can feel overwhelming at first. Finding the right feature sometimes requires digging through menus. The free plan has meaningful limitations compared to competitors' free tiers.
For simple personal task management, ClickUp is overkill. The interface simplicity of Todoist or Things wins there.
✅ Pros
- Massive feature set for complex projects
- Highly customizable workflows
- Excellent mobile apps
- Powerful automation features
- Great value at $7/mo Unlimited
❌ Cons
- Steep learning curve
- Interface can feel cluttered
- Free plan limited vs competitors
- Some features buried deep in menus
🥉 Todoist
$0 free › $5/mo pro › $10/mo business
Todoist is the gold standard for simple, reliable task management. If you don't need complex project management, this is everything you need and nothing you don't.
What sets Todoist apart
The natural language input is genuinely excellent. Type "Submit report tomorrow at 3pm #work p1" and it creates a task with due date, project, and priority instantly. The clean, distraction-free interface lets you focus on tasks rather than fiddling with settings.
In our testing, Todoist remained the fastest way to capture tasks. The collaboration features are solid for small teams, and the integration ecosystem connects with most tools you'd need.
Where it struggles
As projects grow more complex, Todoist's simplicity becomes a limitation. No native calendar view in the free plan. No built-in docs or wikis - you'll need other tools for that.
For teams needing robust project management features, Todoist alone won't cut it.
✅ Pros
- Incredibly fast task capture
- Clean, distraction-free interface
- Natural language input works great
- Reliable sync across devices
- Solid free plan
❌ Cons
- Limited for complex projects
- No calendar view in free plan
- No native docs/wiki
- Collaboration features basic
4. Obsidian
$0 personal free › $10/mo sync + publish
Obsidian is a powerful knowledge management tool built around interconnected notes. It's particularly popular among researchers, writers, and anyone building a "second brain."
What sets Obsidian apart
The linking between notes creates a genuine "network of thought." You build a personal wiki where ideas connect organically. Local-first storage means your data is yours - no vendor lock-in. The plugin ecosystem adds incredible customization.
For knowledge workers building a research system or writers organizing complex ideas, Obsidian is in a league of its own.
Where it struggles
The learning curve is real - markdown and graph views aren't for everyone. Collaboration features are limited compared to cloud-based tools. Mobile apps exist but aren't as polished.
For simple task management, look elsewhere. Obsidian is for building knowledge, not tracking todos.
✅ Pros
- Powerful bidirectional linking
- Local-first: your data stays yours
- Extensive plugin ecosystem
- Excellent for knowledge building
- Free for personal use
❌ Cons
- Markdown required
- Limited collaboration
- Mobile app less polished
- Not a task manager
How to Choose the Right App
Your choice depends on your specific needs:
Choose Notion if:
- You want one tool for notes, light PM, and personal organization
- You value flexibility and customization over simplicity
- You work in a small team needing shared docs and lightweight project tracking
Choose ClickUp if:
- You need serious project management features
- You manage teams with complex workflows
- You want the most features for the lowest price
Choose Todoist if:
- You just need to track tasks without complexity
- Speed and simplicity are your top priorities
- You're already happy with other tools for docs and wikis
Choose Obsidian if:
- You're building a knowledge management system
- You write research papers, books, or long-form content
- You value data ownership over cloud convenience
🏆 Our Verdict
Best overall: Notion - the versatility and template ecosystem make it the strongest choice for most people in 2025.
Best for teams: ClickUp - feature-rich and reasonably priced, it handles complex projects that Notion can't.
Best for simplicity: Todoist - if you just need task management, nothing beats its speed and clean design.
Start with free plans of any of these - you can always upgrade or switch as your needs evolve.
Get Started with ClickUp Get Started with Notion