The verdict in three sentences
On a construction site, information not fed back from the field the same day is expensive: unanticipated delays and snag disputes at handover. Market site SaaS (30 to 90 EUR/user/month) offer a generic app but rarely connect to your ERP and accounting. Custom mobile development between 40,000 and 90,000 EUR links field, progress and budget, and cuts delays by 20%.
Site SaaS or custom app: the choice
The difference plays out in field usage: an app designed for your snag processes and connected to your ERP avoids double entry and information loss between site and head office.
| Criterion | Site SaaS | Custom app |
|---|---|---|
| Cost | 30 to 90 EUR/user/month | 40,000 to 90,000 EUR once |
| Annual cost (30 users) | 10,800 to 32,400 EUR | Maintenance 8,000 to 15,000 EUR |
| Field mobile app | Standard | Offline-optimised, geotagged photos |
| Snag management | Generic | Custom workflow + signatures |
| ERP/accounting integration | Limited | Native |
| Real-time budget tracking | Basic | Custom dashboards |
The scope of site tracking software
Value concentrates on the field app (photos, progress, snags), budget tracking and ERP integration. Offline mode is essential on poorly covered sites.
| Module | Content | 2026 range (EUR) |
|---|---|---|
| Offline field mobile app | Photos, geolocation, progress | 12,000 to 24,000 |
| Snag management | Clearing, signatures, history | 8,000 to 18,000 |
| Budget + progress tracking | Costs, margin, overrun alerts | 10,000 to 20,000 |
| ERP / accounting integration | Imports, work statements | 8,000 to 18,000 |
| Multi-site reporting | Consolidated dashboards | 6,000 to 14,000 |
Allow a 14 to 20 week timeline for a usable field and reporting base.
Mini case study
Karim is works director at a 30-strong developer in Bordeaux, running 8 simultaneous sites with an average budget of 2.5M EUR. Delays cost on average 1.5% of budget in penalties and ancillary costs, i.e. 37,500 EUR per site, or 300,000 EUR a year. By cutting delays 20% through real-time tracking, he saves 60,000 EUR a year, on top of a 35% drop in snag disputes. The custom investment of 75,000 EUR pays back in the second year.
FAQ
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Does the site app work without a connection?
Yes, a custom app handles offline mode: photos and readings are captured on site then synced when the network returns, essential on poorly covered sites.
How much does custom site tracking software cost in 2026?
Between 40,000 and 90,000 EUR for a full scope (field app, snags, budget, ERP). A field app alone starts around 15,000 EUR.
Can site tracking connect to our ERP or accounting?
Yes, native integration feeds work statements and costs without double entry, between 8,000 and 18,000 EUR depending on connectors.
How does the software reduce snag disputes?
By timestamping and geolocating each snag with photo and signature, creating enforceable proof and cutting disputes by 30 to 35%.
How long to deploy?
Between 14 and 20 weeks for a field and reporting base, with progressive deliveries per module.
Let's scope your project. Tell us the number of simultaneous sites, your current ERP and your field constraints for an indicative budget and timeline. 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.
