Manage your construction business in one app
Cost estimation, invoicing, projects and time tracking, all from mobile. Designed for construction companies of 1–20 people.
14 days free · No payment details · Set up in 10 min
Done
Wall frames and bracing
68 m
€6,900.00
Roof trusses and upper floor
100 m²
€5,400.00
Installation work
230 h × €55.00
€12,650.00
VAT 0%
Quote total
€24,950.00
Not a heavy ERP. Not just an invoicing tool.
Lightweight mobile operations for the everyday of a construction company.
Quote
Calculate and win the job
Site
Manage the project and hours
Invoicing
Turn work into invoices
Reporting
See margin and profitability
Do you recognise these problems?
Many construction companies struggle with the same challenges. FiSAS is built to solve them.
Excel chaos
Cost estimates, schedules and timesheets out of date. The latest versions lost.
Late invoices
Invoicing is forgotten in the rush or invoices go out too late. Money does not move fast.
Margin shows up too late
Project profitability only becomes clear once the work is done and corrective action comes too late.
FiSAS replaces Excel, email chains and sticky notes with a single app where the project margin is visible while the work is still running.
Try for freeEverything for a construction company's everyday
From quote to reporting, the right tools for every stage of the work, in one app.
Win the job
Calculate and send quotes fast, get them approved electronically.
Run the site
Keep projects, tasks and documents under control in one view.
Track time and costs
Log hours from the field and keep purchases in the project's costs.
Invoice correctly
Turn completed work and approved extras into invoices without double entry.
See profitability
See margin, costs and unbilled work in time.
What do you need?
Pick one answer.
Or ask the FiSAS AI assistant for more
Everything you need
16 features designed for construction companies, all in one software.
Cost estimation
AI drafts the quote from your drawings for you. You review it, price it with your own rates and win more contracts.
Drawing measurement
AI takes off the quantities from your drawings for you. You review them, and they go straight into the quote.
Invoicing
Invoice your projects fast. The invoice is created straight from logged work or by payment instalments.
Purchase invoices & expenses
Log project expenses from the field and track profitability in real time.
Inventory
Know what is on the shelf and sell straight from your own stock.
Project management
Schedules, costs and site status in one place.
Time tracking
Log work hours straight from the field, even without a network connection.
Calendar and scheduling
Plan short jobs and longer sites in one view, with the whole team's schedule in real time.
Documentation
Photograph the site and attach photos automatically to the right location.
AI
AI supports using the software and automates the process.
Subcontractors
Manage your subcontractors, request quotes and place orders from the software.
Access control
Log site access on mobile or with a clocking terminal, manage access permits and gather tax numbers in one place.
Tax authority reports
The monthly contract and employee reports for the Finnish Tax Administration, built from your sites, purchase invoices and time entries.
Customers
Keep customer details and project history in order.
Messaging
Project discussions, direct messages and file sharing in one site-specific chat.
TR measurement
The weekly site safety round on mobile, a tappable TR form with observations on the floor plan.

Why FiSAS?
Mobile first
Designed for mobile. Log hours, photos and expenses straight from the edge of the site. Works on a computer too, of course.
Ready in 10 minutes
No long onboarding projects. Sign up and start, for real.
Priced right
From €69/month (VAT 0%). Big systems cost thousands. FiSAS is built for small businesses.
Real human support
Support from real people who know construction. No bots, a real person.
Simple pricing
No hidden fees. Switch plans at any time.
Maker
incl. 1 user
with annual billing · extra user from +€5/mo
- Cost estimation
- Project management
- Customer management
- Time tracking
- Tasks and work orders
- Documentation
Builder
incl. 4 users
with annual billing · extra user from +€10/mo
- All Maker features
- Invoicing
- Drawing measurement and quantity take-off
- Scheduling and Gantt
- Messaging
- Reports
Master
incl. 10 users
with annual billing · extra user from +€15/mo
- All Builder features
- TR measurement
- Expenses and purchase invoices
- Inventory
- Advanced reports
- CO2 tracking
All prices exclude VAT (VAT 0%). Monthly billing is also available.
Construction entrepreneurs trust FiSAS
“FiSAS is a straightforward solution for a construction company like ours. Our employees learn to use it on their own.”
Nikolaus Määttä
Rakennus Popo Oy, Espoo, Finland
“Cost estimation really works end to end, all the way to electronic approval, flawlessly!”
— User, Espoo
“Messaging that automatically translates into the recipient's language solves communication problems.”
— Foreman, Tampere
Ready to try?
Start a 14-day free trial. No commitment, no payment details. Setup takes under 10 minutes.

