The verdict in three sentences
A construction contractor who sends a professional quote in 10 minutes wins more jobs than a rival still scribbling in a notebook two hours later. A dedicated quote-and-invoice app structures site deposits, calculates VAT, automatically chases unpaid invoices and collects via mobile money. For an average ticket of 200,000 to 5,000,000 FCFA, the tool often pays for itself within the first three or four signed jobs.
Handwritten quote versus mobile app
Handwritten quotes are expensive in hidden time: travel, manual maths, missed line items, no paper trail. The app turns every square metre of tiling or every bag of cement into a priced line, reusable from one job to the next.
| Criterion | Handwritten quote | Mobile app |
|---|---|---|
| Drafting time | 2 h | 10 min |
| Acceptance rate | Baseline | +20 % approx. |
| VAT calculation | Manual, error-prone | Automatic |
| Deposit tracking | Memory, notebook | Dashboard |
| Overdue reminders | Forgotten | Auto (SMS/WhatsApp) |
| Client history | Scattered | Centralised |
| Collection | Cash | Mobile money + cash |
The gain is more than comfort: a clear quote with a logo and an item-by-item breakdown reassures the client and justifies the price.
What it costs and what it returns
The 2026 ranges below are orders of magnitude for a custom business app, hosting and training included.
| Tier | Indicative cost 2026 | Key features |
|---|---|---|
| Essential | 800,000 - 1,200,000 FCFA | Quotes, PDF invoices, VAT, clients |
| Intermediate | 1,300,000 - 1,900,000 FCFA | + site deposits, auto reminders, mobile money |
| Advanced | 2,000,000 - 2,500,000 FCFA | + multi-user, payment tracking, dashboards |
Maintenance and hosting typically run between 25,000 and 75,000 FCFA per month depending on tier.
Mini case study
Emeka, a tiling contractor in Lagos, signs about 6 jobs a month at 450,000 FCFA each. Before the app, he lost roughly 2 potential quotes a month for lack of a quick reply. With a quote sent in 10 minutes and an acceptance rate up about 20 %, he converts 1 to 2 extra jobs a month, i.e. ~450,000 to 900,000 FCFA in additional revenue. His intermediate app at 1,600,000 FCFA pays for itself in under two months of net gain, before even counting the admin hours saved.
FAQ
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How much does a contractor quote-invoice app cost in 2026?
Expect 800,000 to 2,500,000 FCFA depending on features. The essential tier (quotes, invoices, VAT) starts around 800,000 FCFA; versions with deposit tracking and mobile money rise toward 1,600,000 to 2,500,000 FCFA.
Does the app handle site deposits?
Yes. It tracks the deposit at signing (often 30 to 50 %), interim payments and the balance on handover, with the outstanding amount visible in real time.
Can I collect via mobile money?
Yes, the app can integrate mobile money payments and generate an automatic receipt, while still allowing cash collection.
Does it work without a connection on site?
A well-built app stores quotes offline and syncs as soon as the network returns, which is essential on poorly covered sites.
How long does setup take?
Usually 3 to 6 weeks depending on complexity, team training included.
Become a Kolonell referral partner
Do you know contractors, construction firms or engineering offices losing jobs for lack of tools? Join our referral partner programme. Commissions are clear: 15 % on a showcase-site sale + 5 % recurring, 12 % on e-commerce, 10 % on marketplaces and 8 % on institutional projects. A single successful introduction can earn you several hundred thousand FCFA.
Let's talk about your project. We build your custom construction quote-invoice app, with mobile money and deposit tracking. 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.
