Who this guide is for
People comparing scheduling tools for a specific workflow, team, or event format.
Use this guide when
A practical WhenWorks vs Timeful comparison for people choosing between calendar-connected heatmap scheduling and fast no-account voting.
Timeful, formerly Schej, has gained momentum as a free, open-source scheduling tool. Developers love it. It has over 1,400 upvotes on Reddit's r/opensource and a growing base of users who appreciate its calendar integration and open codebase.
WhenWorks takes a different approach: low-friction scheduling where the organizer can create a free account, share one poll link, and let voters respond without accounts, calendar connections, or technical setup.
Both tools solve real problems. But they solve them differently. This comparison will help you choose the right one for your specific situation.
What Each Tool Does
Timeful
Timeful lets you create scheduling polls where participants mark their availability using a heatmap grid. You paint times you are free, and the tool aggregates everyone's responses to find overlaps. Timeful connects to Google Calendar, Outlook, and Apple Calendar to import your real availability automatically.
It is built with Vue and Go, open-source under AGPL-3.0, and donation-supported.
WhenWorks
WhenWorks lets you create scheduling polls where participants click or tap to select times or dates that work. The organizer uses a free account to create and manage polls. Voters can respond from the shared link without creating accounts. The interface is mobile-first and designed for immediate use. Results display in a simple vote count.
It is freemium: free for 10 polls per month, with Pro at $6 per month for unlimited polls.
The Core Tradeoff: Calendar Sync vs. No-Account Voting
The fundamental difference is this: Timeful optimizes for calendar-connected power users, while WhenWorks optimizes for fast responses from any group.
This matters more than it sounds. Every barrier between "click the link" and "submit your availability" reduces participation. When you are scheduling with students, clients, external collaborators, or friends, asking every voter to sign in can turn a quick poll into another reminder thread.
Timeful's approach is strongest when participants want calendar sync. WhenWorks is strongest when the priority is maximum participation from people who just need to vote.
Quick Comparison
| Feature | WhenWorks | Timeful |
|---|---|---|
| Signup required to vote | No | Yes |
| Signup required to create | Free account | Required |
| Mobile experience | Built for phones first | Desktop-optimized |
| Interface style | Clean tap-to-select | Heatmap grid painting |
| Calendar integration | Coming Q2 2026 | Google, Outlook, Apple |
| Open source | No | Yes (AGPL-3.0) |
| "If needed" availability | No | Yes |
| Date-only polls | Yes | No |
| Cost | Free for 10 polls/month, Pro $6/month | Free + donations |
Who Should Use Timeful
Timeful is the right choice if:
You need calendar integration. If your schedule lives in Google Calendar and you want availability to import automatically, Timeful delivers this today. WhenWorks requires manual selection until calendar sync launches in Q2 2026.
You are a power user scheduling complex groups. Timeful's "available if needed" feature lets participants mark times they could make work in a pinch, separate from preferred times. This granularity helps when coordinating across many constraints.
Open source matters to you. Timeful is AGPL-3.0 licensed. You can inspect the code, self-host if you have technical skills, and trust that the tool will remain free. If software freedom is a priority, Timeful aligns with your values.
Your group is comfortable with accounts. If you are scheduling with other technical users who do not mind signing in, the account friction may be acceptable. Developer groups and internal company scheduling often fit this profile.
You primarily use desktop. Timeful's heatmap interface works better with a mouse than a thumb. If most of your scheduling happens from a laptop, the mobile limitations are less relevant.
Who Should Use WhenWorks
WhenWorks is the right choice if:
You need maximum participation. When you are polling students, clients, or external collaborators, every barrier hurts. WhenWorks lets people vote quickly without voter accounts, passwords, or OAuth flows.
Your group uses mobile phones. The mobile-first design means polls work smoothly on phones without pinch-and-zoom gymnastics. For groups where people check their phones before their laptops, this matters.
You are scheduling in academic contexts. Professors, graduate students, and university staff use WhenWorks because it removes the friction that kills academic scheduling. A professor can create the poll with a free account, and students or committee members can vote from the link without signing up.
You want date-only polls. WhenWorks lets you poll by date - "which of these days work?" - before narrowing to specific times. This is useful for thesis defenses, department meetings, and initial coordination.
You need something that just works. No technical setup, no self-hosting considerations, no GitHub issues to file. Create a poll, share the link, get results.
The Honest Verdict
Timeful is a solid tool built by competent developers. The calendar integration is genuinely convenient. The open-source license is admirable. For power users who want those features and do not mind account-based participation, it is a reasonable choice.
But for the typical scheduling scenario - a professor polling students, a manager finding a team meeting time, friends planning a dinner - account friction matters. It can be the difference between a poll that closes quickly and a thread that needs multiple reminders.
WhenWorks was built for the 90% use case: quick polls, maximum participation, mobile-first, no voter accounts. It makes a different set of tradeoffs, and for many groups, those tradeoffs are the right ones.
Try WhenWorks free - create a free account to manage your poll. Voters can respond without accounts.
Before you act on this advice
- Check the real free-tier limits, not just the headline plan name.
- Test the responder experience on mobile before rolling a tool out to a group.
- Verify whether participants need accounts, calendar access, or extra setup.
Common traps to avoid
- Do not judge tools by pricing alone without testing the actual participant experience.
- Avoid comparing features outside the workflow you are genuinely trying to improve.
- One strong live test reveals more than a long list of marketing claims.
Best next step
Choose the two most realistic options for your workflow and test them with a live scheduling task before deciding.
Why you can trust this page
We review comparison topics through the lens of real scheduling workflows, free-tier friction, participant experience, and setup requirements that affect whether a group can actually use the tool successfully.
Public guides on WhenWorks are tied to the product and support context behind the site. We explain our editorial process publicly so readers can judge whether the page feels complete and trustworthy for their use case.
Want the policy context behind this article? Review our editorial standards or contact the team.
Questions people usually ask
What should I test first in a tool comparison?
Test the real workflow that matters most to you, especially how easy it is for first-time participants to respond and how much follow-up the organizer still has to do.
Can one tool fit every scheduling use case?
Sometimes, but not always. Group coordination, appointment booking, and internal planning often benefit from different design choices, so the best fit depends on the job.
