The verdict in three sentences
On a construction site, information flows badly: paper time sheets, photos lost in phones, reports written from memory at night. A vertical solution deploys fast but charges per site or per user and imposes its forms, whereas a custom offline-first PWA at EUR 35,000-75,000 works without a network in the field and connects to your accounting, cutting reporting time by -30%. The decisive point in construction is the offline mode: software that fails without 4G will never be used by crews.
Vertical licence or custom app: the field decides
The vertical solution covers standard needs: time logging, progress tracking, reports. But it often bills per active site, which gets costly as operations grow, and its forms don't always match your quantities and phases. Custom locks in your processes: geolocated time logging, timestamped photos, handover reports in the format your client expects, and above all robust offline operation.
| Criterion | Vertical licence | Custom PWA |
|---|---|---|
| Upfront cost | EUR 0-4,000 (setup) | EUR 35,000-75,000 |
| Recurring cost | EUR 20-45/user/month or/site | hosting EUR 100-250/month |
| Timeline | 2-6 weeks | 16-24 weeks |
| Offline-first mode | partial | full, guaranteed |
| Geolocated time logging | yes | yes, custom |
| Accounting connection | limited connectors | custom API |
| Handover forms | standard | your format |
| Code ownership | no | yes |
Total cost over 4 years, for 25 field users
With 25 team leaders and site managers in the field, a vertical licence's per-user cost becomes significant. Let's compare over 4 years.
| Item (25 users, 4 years) | Vertical licence | Custom PWA |
|---|---|---|
| Subscription (EUR 32 x 25 x 48 months) | EUR 38,400 | — |
| Initial development | EUR 4,000 | EUR 55,000 |
| Hosting (4 years) | included | EUR 8,000 |
| Evolutive maintenance (4 years) | included | EUR 16,000 |
| Field training | EUR 3,000 | EUR 4,000 |
| 4-year total | EUR 45,400 | EUR 83,000 |
The licence looks cheaper, but it caps out: a 26th and 27th user add EUR 32/month each, and you stay locked in its forms. Custom costs nothing more per extra user and saves -30% of reporting time; in a firm where supervisors spend hours compiling reports, that gain quickly runs to tens of thousands of euros a year.
Mini case study
Mr. Nolan, head of a construction firm in Toronto, runs 18 simultaneous sites with 25 people in the field. His site managers each spend about 6 h/week compiling time sheets and reports. An offline-first PWA at EUR 55,000 cuts that by -30%, saving 1.8 h/week per manager: across 5 managers at EUR 40/h, that's about EUR 18,000/year, plus fewer handover disputes thanks to timestamped photos. Custom pays back in about three years on time alone, faster once avoided disputes are counted.
FAQ
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What does custom site-tracking software cost in 2026?
EUR 35,000-75,000 for an offline-first PWA covering time logging, progress, photos and reports, depending on the number of modules. Typical timeline is 16-24 weeks.
Why insist on offline mode?
Because many sites lack a reliable network: software that requires 4G gets abandoned by crews. An offline-first PWA stores entries locally and syncs when the network returns, which guarantees adoption.
Does it connect to our accounting?
Yes, via API: logged hours and progress can feed your payroll and cost-accounting software, with no double entry, for reliable margin tracking per site.
What concrete gain for supervisors?
On average -30% of reporting time, because time sheets and reports flow in real time from the field, plus fewer handover disputes thanks to timestamped, geolocated photos.
Isn't a vertical licence enough to start?
For a small firm, yes. But as the number of users and sites grows, the per-seat cost and form rigidity tip the balance toward custom, especially if you want to own your data.
Let's scope your project. Construction firm seeking a site-tracking platform, indicative budget EUR 35,000-75,000, delivery in 16-24 weeks: tell us the number of sites and field users. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
