Most time tracking problems are not really about tracking. They are about what happens to the data afterwards: whether it feeds payroll correctly, whether managers approve timesheets on time, whether invoices go out with the right rates, and whether your finance team can trust the numbers without running a separate reconciliation every fortnight.
Generic SaaS tools are designed for simple workflows. If yours are simple, they work fine. If they are not, you end up with workarounds.
We build custom time tracking software for UK businesses. You own it outright, it connects to the systems you already use, and you never pay a per-seat subscription again.
ByteGears is a small London consultancy. We work with SMEs—typically 10 to 200 employees—on bespoke automation. Time tracking comes up more than almost anything else, usually when a business has outgrown what their current tool can do.
Why off-the-shelf time tracking causes friction
The problems usually become visible at a specific moment: a new client contract with unusual billing terms, a payroll system that refuses to talk to the tracker, or a manager asking for a report that the tool cannot produce without significant manual work.
Common issues we see:
- Billing logic that does not fit any template. Retainer clients with variable overage rates, tiered commission structures, milestone-triggered invoices, or blended fixed-plus-variable billing are beyond what most SaaS tools support. Finance ends up managing a spreadsheet on the side.
- Approval workflows tied to cost centres. Generic tools offer single-level approvals. If your organisation routes approvals by project type, budget threshold, or client segment—or needs escalation above a certain value—most platforms cannot do it.
- Payroll integration that is either absent or fragile. Connecting time tracking to Xero, QuickBooks, or Sage is possible in some tools, but the field mapping is often incomplete and the sync runs once a day. If your payroll team spots discrepancies, they resort to manual fixes.
- Data held in US data centres. Several of the biggest tools (Toggl, Hubstaff) run exclusively on US infrastructure. For UK and EU businesses this creates GDPR complexity that often gets ignored rather than resolved.
- Per-seat pricing that compounds. At 10 users, £10–£20 per user per month feels manageable. At 50 users, it is a budget line. The rates rarely improve with scale.
- Invasive monitoring features that create staff resistance. Tools with screenshot capture and keystroke logging—Hubstaff, Time Doctor—tend to generate employee pushback. Once trust erodes, compliance suffers.
The result is that timesheets get filled in late, descriptions stay vague, and your finance team is still manually reconciling the data every month.
What we build instead
We look at how your team actually tracks time today, where the data needs to go, and what your biggest sources of error or delay are. Then we build software around that reality.
Practical specifics:
- You pay once for development. No per-seat charges that grow with your headcount, and nothing owed to a vendor if you decide to change direction.
- We integrate directly with your accounting, payroll, and HR systems—including legacy platforms that lack modern APIs.
- UK employment law and GDPR compliance are designed in from the start: audit trails, configurable data retention, role-based access, and support for data subject requests.
- Approval workflows match your actual organisational structure, not a simplified version of it.
- The system is yours. If your billing model changes or you add a new payroll system, we build the change. You are not waiting on a vendor roadmap.
What the finished system typically includes
Every project is scoped to what you actually need, but most builds include some combination of:
Time capture
- Clock in and out from desktop, phone, or tablet
- Timer-based and manual entry, with offline mobile support for field workers
- Project, task, client, and cost code assignment at entry level
- GPS location capture where needed, with explicit consent controls
Timesheet management
- Automatic timesheet generation from time entries
- Configurable approval workflows: single or multi-level, sequential or parallel, with escalation rules
- Audit trail on every edit—who changed what and when
Billing and invoicing
- Billable rate management per project, client, task type, or individual
- Support for retainers, variable overage rates, milestone billing, and blended models
- Direct time-to-invoice conversion, formatted for your accounting platform
Reporting and dashboards
- Labour cost tracking per project, job, or client
- Utilisation reports: billable versus non-billable hours by team or individual
- Project profitability analysis
- Reports formatted for payroll, client billing, or internal review
Integrations
- Direct integration with Xero, QuickBooks, Sage, and UK payroll systems
- Custom connectors for legacy systems without REST APIs
- Holiday and absence management in the same place as time tracking
Compliance
- Data held on UK or EU infrastructure if required
- Working Time Regulations, RTI, and NMW record-keeping
- GDPR-compliant data retention, deletion, and subject access request workflows
We scope what you actually need before writing any code. You do not pay for features that sit unused.
How a project runs
Discovery (two to three weeks). We map your current processes—how time is captured today, where it goes afterwards, and where it breaks down. We identify the integrations, approval flows, and billing logic that need to be built.
Development (six to ten weeks for an MVP, twelve to sixteen weeks for a full build with integrations). We work iteratively so you can see progress without waiting for a big reveal at the end.
Testing and deployment (two to four weeks). We test against your real payroll and accounting workflows before go-live.
Training and handover. End-user training, manager training, and finance team onboarding are included. We provide documentation and support after launch.
Most projects wrap up in three to five months. The more integrations and workflow complexity involved, the longer the timeline. We will tell you clearly during scoping.
What it costs
An MVP—time entry, mobile access, timesheet management, basic reporting, and CSV export—typically costs £40,000–£80,000. A full build with accounting integration, multi-level approvals, advanced reporting, and invoicing runs £100,000 and up.
That sounds like a lot until you do the maths on the alternative. A 30-person team on a mid-tier SaaS plan spends £4,000–£7,000 per year, indefinitely, on software you do not own. Add the time your finance team spends reconciling data every month, the payroll errors that slip through, and the billing disputes that result from inaccurate time records, and the picture changes.
We give you a clear quote after an initial conversation. We do not charge for scoping.
Industry applications
The value of a custom build is usually proportional to the complexity of your workflows. Sectors where we see the clearest fit:
Professional services and agencies. Complex rate structures, retainer billing, client-specific approval chains, and project profitability reporting that SaaS templates cannot accommodate. Legal firms in particular need matter-based time entry, detailed audit trails, and compliance-aware workflows.
Construction and field service. Job costing by phase and subcontractor, GPS clock-in with geofencing logic tied to specific sites, equipment hours linked to work orders, and offline mobile entry for workers without reliable connectivity.
Healthcare. Patient-linked time allocation, appointment-synchronised tracking, and compliance reporting for funding audits. Standard SaaS tools are not designed for healthcare data sensitivity requirements.
Manufacturing. Shift-based entry linked to production work orders, cost centre allocation, machine downtime tracking, and integration with ERP or MRP systems that have no native time tracking connector.
Public sector and charities. Cost allocation across multiple grant funding sources, detailed audit trails for compliance reporting, and time entry validation rules that enforce minimum description standards.
Software development teams. Sprint and ticket-linked time tracking, integration with Jira or GitHub, developer utilisation metrics, and project margin analysis by client or engagement type.
If your sector has unusual billing rules, compliance requirements, or data sensitivity concerns, that is usually exactly where a custom build earns its keep.
Common Questions About Custom Time Tracking Software
How does custom development cost compare to SaaS subscriptions?
SaaS tools like Toggl Premium cost around £200 per user over five years; Harvest runs similar figures. For a 20-person team that's £4,000+ annually with no ownership at the end. Custom development costs more upfront—typically £40,000–£80,000 for a solid MVP—but you own it outright, and there are no per-seat charges that compound as you grow. Most clients see the system pay for itself within two to three years through time saved on manual reconciliation and payroll errors alone.
What's the typical development timeline?
An MVP with time entry, mobile access, timesheet management, and basic reporting takes 8–12 weeks. A full build with accounting or payroll integrations, multi-level approval workflows, and advanced dashboards runs 16–24 weeks. We give you a detailed timeline after scoping your requirements, not before.
Which accounting and payroll systems can you integrate with?
We integrate with Xero, QuickBooks, Sage, and most UK payroll systems. We also build custom connectors for legacy systems that lack modern APIs—batch ETL pipelines, field mapping layers, or two-way syncs where needed. If your current setup is a spreadsheet export emailed to finance, we can fix that too.
Can you handle complex billing logic like retainers or tiered rates?
Yes—and this is usually where SaaS tools fall over. We've built systems with retainer-based billing with variable overage rates, client-specific rate cards, milestone-triggered invoicing, and blended fixed-plus-variable models. If your billing logic lives in a spreadsheet or your finance team's head rather than your current software, that's a clear sign you need something custom.
How do you handle UK GDPR and employment law compliance?
Compliance is designed in from the start, not added on. That means audit trails on every time entry change, configurable data retention policies aligned with your payroll and tax obligations, role-based access controls, and support for data subject access requests. We also align with Working Time Regulations 1998, RTI payroll reporting, and National Minimum Wage record-keeping requirements. For regulated sectors like healthcare or financial services, we can go further.
Do you provide training for our team?
Yes. End-user training (how to log time, mobile app basics) typically takes 30–60 minutes. Manager and approver training adds another hour or two. Finance and payroll team training covers integration workflows and reconciliation. We run these sessions before go-live and provide documentation your team can refer back to.