The verdict in three sentences
A PWA (Progressive Web App) is a website that behaves like an app: it installs on the home screen without a store, loads under 500 KB and keeps working offline thanks to its cache. In areas with unstable connections, it turns a frustrating experience into smooth usage, with retention up about 30 %. The extra cost over a classic site runs between 150,000 and 300,000 FCFA in 2026.
Classic site vs PWA: two worlds on a slow connection
A classic site returns a blank page the moment the network drops. A PWA remembers what it has already loaded and serves it instantly, connection or not.
| Criterion | Classic site | Installable PWA |
|---|---|---|
| First-load weight | 1,500 to 3,000 KB | < 500 KB |
| Works offline | No | Yes (cache) |
| Home-screen install | No | Yes, no store |
| Push notifications | No | Yes |
| Loading on later visits | Full reload | Almost instant |
| Estimated retention | Baseline | +30 % |
| Play Store / App Store route | — | None (0 FCFA in fees) |
The decisive advantage is offline mode: the catalog, hours, menu or product sheet stay viewable even in a no-network zone, which is common outside major urban centers.
When a PWA is the right choice (and its 2026 cost)
A PWA is not for everyone. It shines on specific use cases.
| Situation | PWA relevant? | Main benefit |
|---|---|---|
| Rural area / secondary town | Yes, strongly | Offline usage |
| Customers who return often | Yes | Instant load + push |
| Shop with a catalog browsed on the move | Yes | Sheets available without network |
| Simple showcase visited once | Little use | A lightweight site is enough |
| Fully real-time transactional app | Case by case | Depends on server needs |
On budget, we start from an optimized site, then add the PWA layer: service worker, cache, install manifest, notifications. The 2026 extra cost is around 150,000 to 300,000 FCFA, versus several million and months of waiting for a true native mobile app published on the stores.
Mini case study
Fatou runs a pharmacy in Kaolack that already helped nearby villages via WhatsApp. Many customers browsed her product catalog from areas where 4G drops to zero. On a classic site, 40 % of visits ended on a page that would not load. After switching to a PWA (420 KB initial weight, cached catalog, "install" button), customers keep the product and price sheets accessible even without network. Out of 600 monthly visitors, completed visits rose from about 360 to 540, and the WhatsApp orders that follow browsing grew by a third. The 220,000 FCFA extra cost was absorbed in under two months.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
FAQ
Does a PWA replace a classic mobile app?
In most commercial cases in Senegal, yes. It offers install, notifications and offline for a fraction of the cost, without store fees and approval delays. A native app is only justified for advanced hardware use.
Do my customers have to go through the Play Store?
No, that is the whole point. The browser directly offers "Add to home screen". Installation takes a few seconds and costs nothing, for you or the customer.
Does offline work on the whole page?
On everything already loaded once: catalog, hours, static content. Actions needing the server in real time (payment, live stock) sync when the network returns.
How much does adding a PWA to my site cost?
As a 2026 order of magnitude, 150,000 to 300,000 FCFA as a layer on an already optimized site. The payback comes from retention: roughly 30 % more returning visitors in areas with unstable connections.
Does a PWA also improve SEO?
Indirectly, yes: it is inherently light and fast, which helps Core Web Vitals and therefore ranking. The real gain, though, remains usage and customer retention.
Let's talk about your project. We assess whether a PWA fits your area and customers, then quote the offline layer. 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.
