The verdict in three sentences
A custom construction site tracking app costs between 30,000 and 80,000 EUR in 2026 depending on scope (time clocking, geotagged photos, reports, progress). Offline mode is not optional: on a site with no signal, the app must keep working and sync when connectivity returns. The return on investment comes from halved administrative time and fewer disputes, not from one more gadget.
What a site tracking app covers in 2026
The core of custom construction software rests on five blocks: crew time clocking, timestamped and geolocated photos, progress tracking per work package, automatic site reports, and incident reporting. All of it must be usable with a finger, wearing gloves, on an entry-level Android phone.
| Feature block | 2026 scope | Indicative budget (EUR) |
|---|---|---|
| Crew clocking + geoloc | Clock in/out, timesheet | 5,000 - 10,000 |
| Timestamped site photos | Album per site, offline | 4,000 - 8,000 |
| Progress per work package | Gauges, simplified schedule | 6,000 - 14,000 |
| Automatic PDF reports | Daily site journal | 5,000 - 11,000 |
| Incident/snag management | Photos + supervisor alerts | 4,000 - 9,000 |
| Offline mode + sync | Queue, conflict resolution | 6,000 - 12,000 |
A first useful version (clocking + photos + reports) ships in 12 to 18 weeks. Ongoing maintenance runs between 400 and 1,000 EUR/month depending on user volume and evolutions.
Subscription vertical or custom build?
Market vertical solutions bill per site manager, per month. Over 3 years, with a growing crew, the subscription often ends up exceeding the cost of an owned build.
| Criterion | Vertical solution (subscription) | Owned custom build |
|---|---|---|
| Entry price | 0 - 3,000 EUR setup | 30,000 - 80,000 EUR |
| Cost per user | 25 - 60 EUR/user/month | 0 (unlimited) |
| 3-year cost (15 users) | 13,500 - 32,400 EUR | 30,000 - 80,000 EUR + maint. |
| Fields and workflows | Standard, rigid | 100 % fit to your process |
| Payroll/accounting integration | Connector-limited | Custom |
| Code ownership | No | Yes |
The switch pays off as soon as you have specific processes (subcontracting, standardized snags, payroll integration) and a growing crew. Below 8 users with no specificity, a subscription stays simpler.
Mini case study
Eric runs a 22-employee structural works firm in Toronto. His site managers spent 6 hours per week each (4 managers) re-entering timesheets and reports, i.e. 24 h/week at a loaded cost of 35 EUR/h, about 43,700 EUR/year. A custom app at 48,000 EUR cuts that time by 35 %, saving ~15,300 EUR/year, plus ending two handover disputes a year (valued at 12,000 EUR). Payback in about 20 months, before the gain in peace of mind and photo evidence.
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FAQ
Is offline mode really indispensable?
Yes. A large share of sites have unstable coverage. The app must store locally then sync: budget 6,000 to 12,000 EUR for reliable offline handling with conflict resolution.
How long for a first production version?
A useful V1 (clocking, photos, reports) ships in 12 to 18 weeks. Advanced modules (progress per package, snags) are added in increments of 3 to 5 weeks.
Can we connect payroll and accounting?
Yes, via API or export. Clocking feeds payroll preparation and removes double entry: it is often the item that generates the most savings, up to 40 % of administrative time.
What maintenance budget should we plan?
Between 400 and 1,000 EUR/month in 2026, covering fixes, small evolutions, security updates and support for site foremen.
Android and iOS, or just one?
On construction sites, Android dominates. We often start Android-only to hold the budget, then add iOS for management if needed (+ 6,000 to 10,000 EUR).
Let's scope your project. Tell us about your site organization, number of managers and priorities (clocking, photos, snags) for a budget calibrated between 30,000 and 80,000 EUR. 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.
