The verdict in three sentences
A construction project tracked on Excel and paper slips almost always drifts: 15 to 40 % over budget from untracked materials and unbilled change orders. A construction management app tracks materials, labour and changes in real time, bringing overruns down to 5-15 % and making margin visible per project. In Lagos as in Abidjan, a builder running 4 projects recovers the software on a single properly billed change order.
Excel versus a site-tracking app: where the margin goes
A project's margin does not vanish at once, it erodes: an uncounted bag of cement, an unallocated worker-day, a change requested verbally and never invoiced. With no audit trail, the builder discovers the loss at the end. The table quantifies the gap.
| Item | Paper / Excel | Tracking app |
|---|---|---|
| Budget overrun | 15 to 40 % | 5 to 15 % |
| Material + labour tracking | monthly, approximate | real time |
| Change orders billed | often forgotten | 100 % logged |
| Quote-to-invoice accuracy | low | high |
| Client disputes | frequent | timestamped photos + milestones |
| Margin visible per project | end of project | continuous |
Change-order logging is the most profitable lever: a single properly documented and billed change can cover a year of software subscription.
What a construction app costs in 2026
Pricing depends on the number of active projects and field users. Here are 2026 orders of magnitude.
| Company size | Monthly subscription | Active projects | Modules |
|---|---|---|---|
| Craftsman / small crew | 30,000 to 45,000 FCFA equiv. | 1 to 3 | Quotes, cost tracking, photos |
| Construction SME | 50,000 to 80,000 FCFA equiv. | 4 to 10 | + change orders, milestones, purchasing |
| Mid-sized firm | 80,000 to 120,000 FCFA equiv. | 10 to 30 | + invoicing, multi-crew |
| Group / major works | on quote | 30+ | + API, consolidation, site HR |
Supplier payments via mobile money are logged and matched to the relevant project. Milestone billing improves cash flow by invoicing at each validated stage, backed by photos.
Mini case study
Emeka runs a construction SME in Lagos managing 6 projects, annual turnover around 480,000,000 FCFA equivalent. On old-school projects, he estimated average overrun at 22 %, eroding roughly 50,000,000 FCFA/year of margin between lost materials and unbilled change orders.
He deploys software at 90,000 FCFA/month equivalent. Real-time tracking brings overrun to 10 %, and crucially every change order is now billed. He recovers on the order of 25 to 30 million FCFA equivalent of margin in the first year, for a software cost far below that. Per-project margin visibility adds 5 to 12 points of profitability.
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FAQ
Does the app work on site without good connectivity?
Yes. Field apps run offline and sync as soon as the network returns. The site foreman logs materials, hours and photos from a phone.
How does the app prevent client disputes?
Every change order is logged with date, cost and approval, and each milestone is documented with timestamped photos. If contested, the evidence is undeniable.
Can we track supplier payments?
Yes. Payments via mobile money or transfer are recorded and matched to the project, giving the real cost of purchases in real time rather than at the end.
Does the quote turn into an invoice automatically?
Yes. The software links quote, progress and milestone billing. Quote-to-invoice accuracy rises and you bill for what was actually done.
How long to set it up?
Allow 2 to 4 weeks: configuring cost items, importing ongoing projects, training crew leads. The first fully tracked project starts right away.
Let's talk about your project. We deliver a construction tracking app for site progress, quotes and costs to protect your margin. 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.
