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If you’re running a small business in the UK, annual leave is usually the first piece of HR admin that becomes harder than it should be. A spreadsheet works when there are two or three of you, but every new hire adds another holiday allowance, more requests to coordinate, and more sickness records to keep accurate. That’s usually the point where you start looking for software, and have to decide whether you need a dedicated leave tracker or a broader HR platform.
CharlieHR is the better fit for most small UK businesses (under 50 people) because it combines leave management with new-hire onboarding, employee records, and performance reviews in one system. WhosOff is a specialist leave and absence tracker that is better if you need detailed staffing rules, minimum department staffing limits, and multi-tier overtime workflows.
As part of the team at Charlie, I’ve seen how quickly HR admin spreads once a business starts hiring regularly. Time off might be the first process that pushes you to look for software, but it’s rarely the last. In this guide, we’ll look beyond holiday booking to help you decide which platform fits the wider HR work your business is starting to manage.
Feature
CharlieHR
WhosOff
Primary focus
Broader HR platform for UK small businesses
Specialist leave and absence platform with Staff Hub
Leave requests and approvals
✅
✅
Shared leave calendar
✅
✅
Manager notifications
✅
✅
Custom leave types
✅
✅
Half-day leave
✅
✅
Hourly leave
☑️ Less configurable
✅ More flexible
Carry-over rules
✅
✅
Restricted dates
✅
✅
Multiple leave policies
✅
✅
Minimum staffing rules
❌
✅
Prevent specific team members taking leave together
❌ (gets an alert when they take leave at the same time before approving)
✅
Auto-approved leave types
✅
✅
Bulk leave booking
❌ Comparable workflow not found
✅
Sickness tracking
✅
✅
Bradford Factor reporting
❌ In-app
✅
Overtime management
❌
✅ Full workflow
TOIL management
☑️ Managed as leave
✅ Full workflow
Reporting
✅ HR-focused reporting
✅ Detailed leave and absence reporting
Document storage
✅
✅
Employee records
✅
✅ Staff Hub
New-hire onboarding
✅ Full workflow
☑️ Employee setup only
Performance reviews
✅ Full review cycles
☑️ Records and reminders
360 feedback
✅
❌
Goals and OKRs
✅
❌
Engagement surveys
✅
❌
HR advice
☑️ Charlie Grow
❌
Recruitment / ATS
☑️ Charlie Recruit add-on
❌
Employee self-service
✅
✅
Best for
UK small businesses that want leave management alongside broader HR
Businesses that need deeper leave, staffing, overtime and absence controls
If leave is the main reason you’re looking for software, our guide to the best leave management software gives you a wider view of the options. You can also see how Charlie’s own leave management system works.
CharlieHR gives small businesses one place to manage time off, onboarding, employee records and performance reviews, so everyday HR is easier to keep on top of as your team grows.
Charlie is a better fit when you’re managing time off alongside the rest of your everyday HR:
For a growing business, these jobs usually start piling up at the same time. Onboarding becomes too messy for email, while performance reviews need a repeatable process. Charlie gives you one place to keep on top of all of it as your team grows.
Charlie gives small businesses a proper onboarding process for new hires so you spend less time chasing onboarding admin and get a clearer view of what still needs to be done.
New team members can enter their own information, upload documents, complete onboarding tasks and receive automatic reminders. You can also assign tasks to other team members, track progress and manage Right to Work and new-starter admin in the same process.
Charlie gives you a repeatable performance review process, so reviews are easier to run consistently across the team.
You can run recurring review cycles, use templates, collect self and manager feedback, request 360 feedback and track whether reviews have been completed. You can also store and track goals and OKRs alongside the review process.
WhosOff is strongest when leave decisions have a direct impact on staffing. Its more detailed controls can help managers keep enough people available when cover is tight.
For teams where several people being off at once can cause problems, WhosOff lets you set clear rules around who can take leave and when.
You can set minimum staffing levels, limit how many people in a department can be away at once, and even prevent specific team members from booking overlapping leaves.
WhosOff also gives you more ways to manage overtime and TOIL, which can make those records easier to keep accurate.
Team members can submit overtime for approval, with different overtime types and conversion rates available. Approved overtime can feed into separate TOIL balances, with records available for payroll.
WhosOff can also help you keep a closer eye on sickness absence, making recurring patterns easier to spot. It includes built-in Bradford Factor reporting and absence threshold monitoring, with return-to-work records available when someone comes back.
Here’s how the two platforms compare across different small-business needs:
Your situation
Better fit
Why
Typical UK small business under 50
CharlieHR
Broader HR functionality is likely more useful than specialist workforce controls
First HR system / no dedicated HR person
CharlieHR
Covers the core HR processes small teams tend to need first
Replacing several HR spreadsheets and tools
CharlieHR
Leave, records, onboarding and performance can be managed together
Complex staffing requirements
WhosOff
Stronger minimum-staffing and employee-overlap controls
Regular overtime and TOIL
WhosOff
Dedicated overtime and TOIL workflows
Detailed sickness monitoring
WhosOff
Built-in Bradford Factor and deeper absence controls
You only want a leave-management system
WhosOff may be enough
You may not need Charlie's wider HR functionality
Charlie is built for small businesses where HR is often managed by someone who already has plenty of other responsibilities. It’s designed to make that work easier, even if you don’t have much HR experience.
A few things make it a good fit for companies with teams of less than 50 people:
For a small business, Charlie’s mix of core HR tools, perks, integrations and optional support gives you room to add more as your team grows. You can also see how Charlie compares with other HR platforms in our HR software comparison hub.
CharlieHR gets strong feedback from users for being easy to use and providing responsive support. On G2, where it maintains a strong rating, reviewers regularly praise the platform’s simple navigation and the help they receive from the Charlie team
Capterra currently rates CharlieHR 4.7/5 overall, with a 4.8 score for “value for Money” and 4.8 for functionality.
WhosOff makes more sense when approving leave depends on keeping enough people available across shifts, departments or key roles.
You can set rules to make sure enough people are available and manage overtime and TOIL. WhosOff also helps you spot sickness patterns. For example, if one team member has several short absences over a few months, the software can flag that pattern so a manager can follow up rather than treating each absence as an isolated event.
It also lets you put tighter limits around the leave process, including how many people can be off at once or whether specific team members can book the same dates.
For teams where coverage and absence patterns need closer attention, Whosoff may be the better choice.
Public reviews of WhosOff are generally positive. On G2, reviewers frequently praise its ease of use and the visibility it gives teams over leave requests. Capterra tells a similar story, with WhosOff currently rated 4.2/5 overall and consistent praise for its ease of use.
One reviewer describes it as “Easy to use immediately (no training required)” and says it’s “Easy to approve holidays without the use of emails.”
G2’s review summary also notes some complaints about the inability to cancel leave requests without manager approval.
The price of each platform only tells part of the story because you're buying different levels of functionality.
WhosOff gives you deeper specialist leave, absence, overtime and staffing controls. Charlie gives you leave management as part of a broader HR platform.
Team size
CharlieHR
WhosOff
1-4 team members
Basic: £21
Charlie Grow: £200
Recruitment add-on: + from £55
£17.50
5-9 team members
Basic: £47
Charlie Grow: £226
Recruitment add-on: + from £55
£17.50
10-14 team members
Basic: £47
Charlie Grow: £346
Recruitment add-on: + from £55
£24.10
15-29 team members
Basic: £108
Charlie Grow: £407
Recruitment add-on: + from £55
£47.50
30-49 team members
Basic: £185
Charlie Grow: £484
Recruitment add-on: + from £55
£74.70
50-99 team members
Basic: £323
Charlie Grow: £622
Recruitment add-on: + from £55
£137.25
Charlie is designed to cover the HR work small businesses usually need first, but you don't have to replace it as soon as your requirements develop.
Charlie Recruit gives you an applicant tracking system and recruitment functionality when hiring becomes more regular.
Charlie Advice gives you access to UK HR experts when questions become harder to answer on your own. That service also includes additional support such as one-to-ones.
WhosOff remains more specialised around leave, absence and workforce administration. If those are the areas becoming more complicated, its deeper controls may continue to suit you.
If your growing business is starting to need more HR processes around the people taking that leave, Charlie gives you more ways to manage them together.
For London-based gynae-health company Daye, growing the team meant finding an HR system that could keep admin manageable as the business scaled.
As Founder & CEO Valentina Milanova explains, the goal was finding one system to handle their growing HR workload:
“We now save about 50 hours on HR per month, which is huge and allows us to focus on more than just administrative tasks.”
Daye now uses CharlieHR for HR work including onboarding, time off and performance reviews. With a team of 42, the company says it saves around 50 hours of HR admin each month.
“We now save about 50 hours on HR per month, which is huge and allows us to focus on more than just administrative tasks.”
For a growing small business, that’s a useful example of what can happen when everyday HR is managed in one system.
For most small UK businesses under 50 people, CharlieHR is the stronger overall choice.
It gives you the leave management features most small teams need alongside the everyday HR work that comes with hiring and managing a growing team. Charlie is especially helpful when you’re choosing your first HR system or finally moving HR out of spreadsheets and into a dedicated system.
WhosOff may be a better choice when leave management depends on detailed staffing rules or more hands-on absence tracking. Its extra controls around staffing, overtime and sickness give managers more detail when those areas need closer attention.
If you want one place to manage more of your everyday HR, book a CharlieHR demo to see how Charlie works for a small team like yours.
This comparison is published by CharlieHR, so we're clearly not a neutral party. We've based it on current product information from CharlieHR and WhosOff, public customer reviews and what we've heard from businesses evaluating or moving between HR systems.
We've also included the areas where WhosOff offers functionality Charlie doesn't, so you can decide which platform fits the way your business actually works.
CharlieHR is the better fit for most small UK businesses that want leave management alongside onboarding, employee records, performance reviews and wider HR. WhosOff is stronger when leave itself is more complex, particularly if you need minimum staffing rules, overtime and TOIL workflows or detailed sickness management.
WhosOff is a leave and absence management platform for businesses of different sizes. It includes holiday requests and approvals, shared calendars, workforce-planning controls, overtime and TOIL management, sickness reporting and a Staff Hub for employee records, documents, policies and basic review administration.
CharlieHR covers a broader range of HR processes for small businesses, including leave, onboarding, employee records, performance reviews, goals and engagement surveys. WhosOff goes deeper into specialist leave and absence management, with features such as minimum staffing rules, employee overlap restrictions, overtime workflows and Bradford Factor reporting.
Yes, WhosOff can work well for small businesses, particularly when staffing coverage, overtime or detailed absence rules make leave difficult to manage. Company size alone doesn't determine the best fit. A small shift-based business may benefit from WhosOff's specialist controls, while many office-based small businesses need Charlie's broader HR functionality.
Yes. WhosOff currently supports automated leave-request notifications, configurable notification recipients and multiple approvers. Some businesses speaking to Charlie have reported having to chase managers in their own WhosOff setups, but that should not be treated as a limitation of the current product.
Yes. WhosOff provides a shared absence calendar with filtering by areas such as team, department and location. Managers can see team availability when handling leave requests. Charlie also offers shared calendar visibility, so this is an area where both platforms provide strong functionality.
Yes. WhosOff's Staff Hub stores employee information including employment history, salary details, documents, policies, benefits and qualifications. It can also record probation reviews, check-ins and appraisals. Charlie goes further into running broader HR workflows such as employee onboarding, full performance-review cycles, goals and engagement surveys.
Yes. CharlieHR combines leave and sickness management with employee records, onboarding, documents, performance reviews, 360 feedback, goals and engagement surveys. Businesses can also add Charlie Recruit for applicant tracking or Charlie Advice for access to UK HR experts and additional HR support.
Start by checking employee records, current holiday allowances and any accrued or unused leave that needs to be carried across. Then set up your leave policies and employee data in Charlie, check the figures before switching over and explain the new process to managers and team members so everyone knows where to go.
