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Case · B2B · Construction

Tajo: time tracking that clocks in on site every day

Tajo is the time tracking and daily report app for construction companies. We designed and built it at PlisPlas with Grupo Edma, our first client, and their crews use it every day.

Client
Grupo Edma
Industry
Construction
Platforms
Android and web panel
Status
On site every day
Tajo — My hours: monthly total and each day's shifts (Spanish interface)
Tajo — My absences: days left and requests (Spanish interface)
Tajo — clock-in: shift running, offline with one clock-in saved (Spanish interface)
No signal · OKServer time
24/7Clock-in without coverage
0 sOf audio sent to the server
100%Clock-ins chained to server time
4Languages: Spanish, English, French and Romanian
01 — The problemTajo

Clocking in on a site is not clocking in at an office.

01

No turnstile, no wifi

Sites have nowhere to clock in and no network to rely on: basements, open plots, half-built warehouses.

02

Workers move between jobs

During the day they move between sites and tasks, and the record has to follow them.

03

It has to stand up

The time record has to hold up in a labour inspection. Generic time-clock apps fall short exactly there.

02 — What Tajo does05 · Tajo

An app for the site and a panel for the office.

A mobile app for workers and site managers, and a desktop panel for HR and management.

01 / 05

Clock-ins with location and server time

Every clock-in stores where it happened and the time set by the server, not the phone. And it is chained to the previous one, so nobody can tweak it afterwards.

  1. 07:02InServer timeInside the site
  2. Chained to the previous one
    13:02BreakServer timeInside the site
  3. Chained to the previous one
    14:02BackServer timeInside the site
  4. Chained to the previous one
    16:22OutServer timeInside the site
02 / 05

Works without coverage

Offline, the clock-in is stored on the phone and sent on its own when coverage is back. Nobody has to remember to do it again.

Tajo — clock-in recorded offline: it sends itself (Spanish interface)
03 / 05

Site reports dictated by voice

Say out loud what you did and the report fills itself in; the worker reviews it and sends it. The audio never leaves the phone.

Tajo — site report with hours split by task (Spanish interface)

“Tiling bathroom two all morning and clearing rubble in the afternoon.”

04 / 05

Absences, leave and documents

Holidays, hourly leave, documents with read receipts and incidents with photo or PDF. Each one with its status, in plain sight.

  • Holidays12 – 16 SepPending
  • Hourly leaveTuesday · 2 hApproved
  • DocumentOctober payslipRead
  • IncidentWith photoIn review
05 / 05

A panel that flags what needs a look

In the office, daily control per site: who was expected, who clocked in and which reports are missing. Monthly reports and Excel export.

tajo-panel.web.app
Tajo panel — daily control per site (Spanish interface)
03 — How we built itTajo

Tested before it reaches the site.

Every version goes through full QA per role, on emulators and real hardware, and the security rules are tested against the emulator before every release.

  1. 01Flutter, for Android and web
  2. 02Firebase on the server
  3. 03Rules tested against the emulator
  4. 04Full QA per role
  5. 05Emulators and real hardware
Tested with every roleWorkerSite managerHRManagement
Featured case · Client
Grupo Edma — Construyendo tu futuro
PlisPlas

Tajo was born with Grupo Edma, for its sites and its crews.

Building their future, in a plisplas.

A real construction group · they use it every day

Want Tajo for your company? Let's talk

Write to us →Tajo website →
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