Crab Fit vs Rallly
Price, platforms and features side by side. The table says where each price was read and when.
Rallly
Open-source meeting polls for finding a time that suits a group
Where they differ
- Crab Fit is free. Rallly starts at $6 per seat / month, billed yearly ($10 billed monthly).
- Only Crab Fit lists an Android app.
- Only Crab Fit lists a browser extension.
- Crab Fit also covers surveys.
At a glance
| Crab Fit | Rallly | |
|---|---|---|
| Pricing | Free | Free plan |
| Starts at | Free | $6 per seat / month, billed yearly ($10 billed monthly) |
| Free plan | Free with no account. The privacy policy says the service is provided at no cost, and the site asks for donations so that it can stay free for everyone. | Hobby plan: unlimited polls and participants with no card and no time limit. Polls are deleted once all their dates have passed and there has been no activity for 30 days. |
| Free trial | None listed | None listed |
| Web | ||
| Android | ||
| Browser extension | ||
| Made by | Ben Grant | Stack Snap Ltd. |
| Price read from | crab.fit | rallly.co |
| Checked | Oct 9, 2026 | Oct 5, 2026 |
Who each one suits
Crab Fit
- Friends, clubs and coworkers picking a time for a one-off event
- Groups whose members should not have to create accounts
- People who want to run their own scheduling poll server
Rallly
- Committees, clubs and teams picking a meeting time by vote
- Organizers whose participants should not need an account
- Organizations that want to self-host their scheduling polls
Worth knowing
Crab Fit
- Events are deleted after 3 months of inactivity, so it does not keep a long-term record.
- The mobile app is for Android only; no iPhone app is listed.
- Extensions are offered for Firefox and for Safari on Mac. The project's code notes that the Chrome extension was removed.
- It needs a connection: the app's own message says a Crab Fit does not work offline.
Rallly
- On the free Hobby plan, a poll is deleted once all its dates have passed and it has had no activity for 30 days.
- Custom branding, removing Rallly attribution, advanced poll settings, email invites, team spaces and the API all need Pro.
- Self-hosting is free for a single user; multi-user instances need a one-time license, from $49 for up to 5 users.
- Rallly is built around group polls. Its site describes no booking pages and no mobile or desktop apps.
Key features
Crab Fit
- Events created in one form
- Name the event or leave the name blank to have one generated, pick specific dates or days of the week, drag out a time range and choose a time zone. There is no sign-up step.
- Live availability heat map
- Responses appear live on a heat map where darker cells mean more people are free. Hovering or tapping a slot shows who is available, and names can be clicked to view people individually.
- Google and Outlook calendar import
- When entering availability you can sync with Google Calendar or Outlook Calendar, or reuse a recent event. Importing overwrites the availability you had already entered.
- Time zone handling
- Each event stores the time zone it was created in, and a respondent can switch to their detected local time zone. Hours outside the event are greyed out.
- Name and optional password per event
- Respondents enter a name for each event and can add a password to stop others changing their availability. The site says passwords are hashed.
- Open source and self-hosting
- The code is published under the GNU GPLv3, and the repository links to a guide for running your own instance.
Rallly
- Scheduling polls
- Propose several times, share one link, and collect a yes, if need be or no vote for each option. Results show at a glance which time suits the most people.
- No account needed
- Polls can be created and voted on without signing up. A free account adds poll management from any device and notifications when people respond.
- Time zones and finalizing
- Participants see timed options in their own time zone. Finalizing a poll locks in the chosen time and emails participants a calendar invite.
- Advanced poll settings
- Pro can require participant emails, hide participant names and votes, send personal invite links that track opens and responses, and duplicate existing polls.
- Branding and teams
- Pro shows your logo and brand colors, hides the Powered by Rallly line, and lets a team manage polls together in a shared space with central billing.
- API, webhooks and self-hosting
- Pro includes an API for creating polls and reading results, plus webhooks. The same codebase can be self-hosted through a Docker Compose stack.
Plans
Crab Fit
Crab Fit$0
The complete web tool, the Android app and the Firefox and Safari extensions. Donations are optional.
Rallly
Hobby$0
Basic polls with unlimited polls and participants, and 30-day poll retention.
Pro$6
per seat / month, billed yearly at $72 ($10 billed monthly)
Indefinite poll retention, duplicate polls, advanced poll settings, email invites, team collaboration, custom branding, API and webhooks.
Ways to pay less
Crab Fit
No public discounts listed.
Rallly
- Annual discount
Save 40% by paying yearly
Rallly's pricing page lists a 40% saving on yearly billing: Pro is $72 per seat for the year, against $10 per seat a month.
- Nonprofit
Discounted Pro for registered nonprofits
Registered nonprofits can request a discounted Rallly Pro subscription by email, ideally with proof of nonprofit status. No rate is published.
- Lifetime license
One-time licenses for self-hosted instances
Self-hosted multi-user licenses are perpetual for Rallly v4: $49 for up to 5 users, and $299 for up to 50 users, shown as a limited-time price down from $499.
