Guide

What is a GPS timesheet app for contractors?

Q: What is a GPS timesheet app for contractors?

A GPS timesheet app records when and where contractors work by using background location tracking. The app detects arrivals and departures at job sites, builds a timeline of stops and trips, then exports hours for payroll or invoicing. Solo contractors get automatic timesheets without manual clock-in steps.

By Ryder Wishart — trades experience and contractor office administration · Updated 2026-11-06

Quick quiz

What is the main difference between a GPS timesheet app and a manual timer app?

GPS timesheet apps use background location to recognize when you arrive at work locations. The timeline is built automatically as you travel between sites. Manual timer apps require you to remember start and stop at every job, which is easy to forget during busy field days.

GPS timesheet apps vary in storage approach. Some centralize data for crew tracking. Others store timelines locally on your device. Automatic detection based on location is the defining feature, not whether data is centralized or local.

GPS timesheet apps record both time and trip distance. The mileage log they produce is used for tax deductions, not eliminated. Automatic tracking captures drive distance between job sites without you needing to note odometer readings manually.

For contractors visiting multiple job sites per day, a GPS timesheet app removes the manual step of starting and stopping timers, reducing timesheet errors caused by forgotten taps.

How GPS timesheet apps work

GPS timesheet apps use your phone's location sensors to track field work. Background GPS runs while you travel between job sites. The app detects when you stop at a work location and when you leave.

At the end of the day, you review a timeline showing each stop with address, arrival time, departure time, and duration. You label stops with job names, flag billable work, and export rounded hours.

Trips between stops are recorded separately. Your export shows on-site time distinct from drive time, giving you mileage logs for tax deductions and time records for client invoicing.

Manual timers vs automatic GPS detection

Manual time tracking requires you to tap start and stop at every job site. Forget one tap and your timesheet has a gap. Leave the timer running during lunch and your hours inflate.

Automatic GPS detection removes the manual step. Your phone recognizes when you arrive at a job site based on location. The stop is recorded without you opening an app or remembering a button. When you drive to the next site, the app logs the departure and starts tracking the trip.

For contractors who visit multiple sites per day, automatic detection eliminates the most common source of timesheet errors: forgotten start and stop times.

Crew tracking vs solo tracking

GPS timesheet apps fall into two categories. Crew tracking apps centralize time records for teams. Each worker clocks in with their own account, and managers review timesheets in a web dashboard. These systems typically require monthly subscriptions and per-worker fees.

Solo tracking apps record one person's timeline on their device. There is no central dashboard, no manager approval workflow, and often no account signup. You review your own stops, export your own hours, and keep the timeline on your phone unless you choose to share it.

For solo contractors and small operations, solo tracking provides automatic timesheets without the overhead of crew management software.

What contractors use GPS timesheets for

Electricians, plumbers, HVAC technicians, and other field contractors use GPS timesheets to track billable hours across scattered job sites. You arrive at a service call, complete the work, drive to the next client, and your timeline records each stop.

At invoice time, you export hours showing exactly when you were on site. For T&M billing, the GPS-stamped timeline provides defensible proof of work duration. For fixed-price jobs, the recorded hours help you verify profitability and quote future work accurately.

Mileage tracking is the second use case. The app records trip distance between job sites. Your mileage log meets CRA and IRS requirements for business vehicle deductions.

How TradesTimer works as a GPS timesheet app

TradesTimer uses background location to automatically record stops and trips. Your phone detects when you arrive at a job site and when you leave. At the end of the day, you review a timeline with addresses, times, and durations.

You label each stop with a job name. Select billable visits, then export rounded hours and a mileage log. The export includes dates, times, addresses, and durations. This becomes your timesheet.

The app is free. There is no monthly subscription, no per-user fees, and no account signup. The timeline stays on your phone unless you choose to share an export. Automatic stop detection works whether you are a solo electrician or running service calls with a helper.

Privacy and local storage

GPS timesheet apps that store data on your device keep location history private. Your timeline is not uploaded to a server or shared with other users. You control when and where exports are sent.

For contractors who want defensible time records without cloud accounts, local GPS tracking provides automatic timesheets while keeping location data on your own phone. You can review stops, verify accuracy, and delete any records you do not need before exporting hours for clients or payroll.

The founder’s experience

I worked in framing, fencing, roofing, siding, decks, concrete, drywall, and painting. I kept dates and hours in notebooks while working trades. Later, I managed purchase orders, invoicing, and time tracking in the back office of an electrical contractor.

Missing or incorrect time entries made billing harder. Workers forgot to clock in, clocked into the wrong job, or reconstructed hours from memory on Friday. With ten electricians on the road, lost billable time added up quickly.

I built TradesTimer to record stops and trips automatically using background GPS. Your phone creates the timeline as you work. At invoice time, you have a defensible record of when you arrived and left each site. For solo contractors, this eliminates the gap between doing the work and documenting the hours.

— Ryder, founder of TradesTimer. Experience in framing, fencing, roofing, concrete, drywall, painting, and office administration for an electrical contractor.

FAQ

Does GPS timesheet tracking work without cell service?

Yes. GPS satellites broadcast signals that your phone receives directly. Cell service is not required for location readings. The app records stops and trips in areas with no cell coverage. Timeline data is stored on your device and does not depend on internet access.

Can I use a GPS timesheet app for tax-deductible mileage logs?

Yes. The app records trip distance between job sites. At the end of the day, you can export a mileage log showing each trip with start location, end location, distance, and date. This log meets CRA and IRS requirements for contemporaneous business mileage documentation.

How accurate are GPS timesheet apps for proving hours to clients?

GPS location accuracy is typically within 10 to 30 feet in open areas. Urban environments with tall buildings can reduce accuracy. The app records timestamps based on device time, which is synchronized automatically by your phone. GPS-stamped timelines provide contemporaneous proof of when and where you worked, making them defensible for T&M billing and disputed hours.

Will background GPS tracking drain my phone battery during a full workday?

Background GPS does use battery. When your phone is stationary at a job site, the system reduces GPS polling. When motion sensors detect movement, GPS resumes. Actual battery use depends on your phone, travel patterns, and signal strength. GPS pauses after about five minutes without movement. Motion detection stays active.

Last updated 2026-11-06.