Bring in help without upgrading your plan
Zelos gives every organiser their own admin access on the free plan, alongside shift signup, built-in chat and push notifications for unlimited members.
Volunteer recruiting, scheduling, kiosk check-in, and service records
Fits programmes run by one coordinator.
Open shifts, task dispatch, notice board, and team chat
Fits programmes where the work is shared.
No credit card · Unlimited members on every plan · Set up in under 5 minutes
How signup works in each app
Positions on a public calendar
You post events and positions, share them by link or social media, and volunteers sign up, including through a public calendar and group signup pages. Hours are recorded and service certificates generated.
A private team space with shift signup and chats
Members join your workspace once, fill in their own profile, then browse and claim what fits their skills and schedule, with a chat channel attached to every task.
What VolunteerMark is better at
If your workflow depends on the things below, VolunteerMark is the right pick.
Kiosk check-in without an upgrade
A volunteer sign-in and sign-out kiosk is included from their $34 tier, with no extra charge for the kiosk app. Zelos calculates hours from the scheduled shift, not from an arrival at the door.
White-labelling at a low price
Their white-label feature starts at $34 a month, which is unusually cheap. Most platforms in this category reserve branding for a top tier or an enterprise quote. On Zelos, white-labelling means the Enterprise plan.
Service certificates as standard
Volunteer service history and printable service certificates are on every plan including the free one. If your volunteers need proof of hours for school, court-ordered service or an employer, that's ready-made.
Try it before you sign up
They publish sample accounts at explore.volunteermark.com, preloaded with volunteers, opportunities and schedules, that you can click into and change without registering. Almost nobody else in this category lets you see the admin side before handing over an email address.
If these bullet points are non-negotiable, you're a VolunteerMark customer.
What Zelos is sharper at
If you're weighing up the free plans, or more than one person organises the work, Zelos is a better fit.
A free plan you can actually staff a shift on
Zelos's free plan has no member limit, no admin limit and no cap on how many tasks or shifts you post, only 25 running at any one time, with the rest archived. VolunteerMark's free plan allows three open tasks a year and no timed work shifts at all; the three monthly events it does allow are for general participation, not staffed positions.
Every organiser an admin
Zelos gives you unlimited admins on every plan, including free. VolunteerMark's free and Basic plans allow a single administrator; the first tier with more than one is Essential at $75 a month. Until then, one person is the only one who can post a shift.
Conversation, not an allowance
This is the clearest difference at the paid tiers, where the two cost much the same. Zelos gives each task its own chat channel, plus group chats and direct messages, with push notifications and email on every plan and no cap on either. VolunteerMark reaches volunteers by email and by SMS with a monthly allowance: 100 messages on Essential, 250 on Royale, and has no team chat on any plan. Questions come back to your inbox rather than to the shift.
Any team, anywhere
Zelos doesn't ask what kind of organisation you are, and is used by coordinators in more than 40 countries, with each member choosing their own language. VolunteerMark offers on-demand translation from its Essential tier.
If you're drawn to this kind of simplicity, you should spin up a free project in Zelos right away.
volunteers on the free plan
VolunteerMark's free plan stops at 50 volunteers, one administrator and three open tasks a year. Zelos's free plan doesn't count any of them.
What you'll actually pay
Both have a free plan, but they're not the same size of thing (annual billing).
| Zelos | Zelos Pro | VM Free* | VM Essential | |
|---|---|---|---|---|
| Price | Free | $99/mo | Free | $75/mo |
| Volunteers | Unlimited | Unlimited | 50 | Unlimited |
| Admin accounts | Unlimited | Unlimited | One | Unlimited |
| Tasks with no set time | Unlimited | Unlimited | 3 per year | Unlimited |
| Work shifts | Unlimited | Unlimited | None | Unlimited |
| Messaging volunteers | Push and email | Push and email | None | Email + 100 SMS/mo |
| Team chat | Yes | Yes | No | No |
* VolunteerMark pricing from volunteermark.com/pricing.html, August 2026, annual billing.
Seen enough?
Get started in our self-service.
Start your free project No credit card · Five-minute setup
Teams that pick Zelos over VolunteerMark
Churches running weekly rotas
Sunday service, coffee, kids' ministry and the food bank each have their own lead, and each needs to post their own shifts. On VolunteerMark that means the $75 tier; on Zelos every ministry lead is an admin at no cost.
Learn more →Sports clubs and leagues
A parent committee is a lot of coordinators and no budget. Every team manager can post match-day shifts without an upgrade, and parents claim from their phones with a push reminder the night before.
Learn more →Volunteer-led nonprofits with several coordinators
If the volunteer programme is shared between a manager, a programme lead and whoever is covering this month, a single-administrator plan puts all of it through one login. Zelos gives each of them their own.
Learn more →Grassroots and mutual aid groups
Organising shifts between whoever is available that week is the whole model, and it doesn't survive one person holding the only admin account. Zelos is free for unlimited people and unlimited organisers.
Learn more →Event staffing and festival crews
Event crews assemble in weeks, mix volunteers with paid staff and contractors, and need a chat channel per shift rather than a monthly text allowance. Zelos treats everyone as a member who claims work, paid or not.
Learn more →Contractor pools and gig dispatch
Contractors set their own availability and aren't volunteers at all. Post the job, let the right people claim it, coordinate in the task chat.
Learn more →From teams who picked Zelos
What teams who picked Zelos say
"It helped us a lot reducing the planning overhead. It is way more motivating for staff to pick their task than just getting assigned!"
Manuel W.
Coordinator, Events Services
Full review →"We were looking for a system to handle our concert staff. Zelos is really easy to access both for the administrator and the users!"
Niels Peter H.
Board member, Music
Full review →"The overall experience has been great, the customer service is amazing and I can't wait for all the new changes coming up in the app!"
Celia D.
Coordinator, Motion Pictures and Film
Full review →Free for teams of any size
No credit card, no trial expiration.
Pro starts at $99/month, never per person.
Nonprofit and education discounts on Pro and Enterprise.
Frequently asked questions
How much does VolunteerMark cost?
How many administrators do I get?
What does VolunteerMark's free plan include?
What's the difference between Zelos Pro and VolunteerMark Essential?
Can my volunteers chat in Zelos?
Does Zelos have a volunteer sign-in kiosk?
Can I white-label Zelos?
Does Zelos produce service certificates?
Does Zelos work outside the US?
What's the catch with the Zelos free plan?
Can I use both Zelos and VolunteerMark?
Ready to let your team
pick their own work?
Create your first project in under five minutes. No credit card, no onboarding call.
Start your free projectTrusted by coordinators in 40+ countries since 2018.