The verdict in three sentences
For an Ivorian data collection company equipping 120 agents without reliable coverage, an offline-first PWA costs between 12 and 28 million FCFA excl. tax (about 18,300 to 42,700 EUR) depending on the number of forms, photo handling and geolocation. The heart of the project is deferred sync: data is captured offline, stored on the phone and sent as soon as a connection returns, with no loss and no duplicates. With an Android phone at 70,000 FCFA (about 107 EUR) and a 4-month timeline, a first phase removes about 45% of paper forms.
What an offline PWA costs by scope
Budget depends on the number of forms, the complexity of validation rules and the media collected. The ranges below reflect projects delivered in Côte d'Ivoire and Senegal in 2026.
| Scope | Features | Timeline | Indicative cost excl. tax |
|---|---|---|---|
| Offline core | Login, cache, sync queue | 4 to 6 weeks | 4,000,000 to 7,000,000 FCFA |
| 3 to 5 simple forms | Fields, lists, basic validation | 3 to 4 weeks | 2,500,000 to 5,000,000 FCFA |
| 10+ forms, conditional logic | Skip logic, calculations, signatures | 5 to 7 weeks | 5,000,000 to 9,000,000 FCFA |
| Photos and GPS | Compression, timestamps, geolocation | 2 to 3 weeks | 1,500,000 to 3,500,000 FCFA |
| Supervisor dashboard | Agent tracking, maps, Excel exports | 3 to 4 weeks | 2,500,000 to 5,000,000 FCFA |
| Field testing and training | 15-agent pilot, adjustments | 2 weeks | 1,000,000 to 2,000,000 FCFA |
A full project for 120 agents, with 8 forms, photos, GPS and a dashboard, typically lands around 16 to 20 million FCFA excl. tax. Beyond 28 million, you are into heavy integrations with an ERP or a donor's information system.
Architecture: PWA, native app or generic forms
The operations director has three options. The choice comes down to cost, data ownership and the ability to work several days offline.
| Criterion | Custom offline PWA | Native Android app | Generic tool (KoboToolbox, ODK) |
|---|---|---|---|
| Upfront cost excl. tax | 12 to 28 million FCFA | 18 to 40 million FCFA | 0 to 3 million FCFA of setup |
| Monthly cost | 150,000 to 400,000 FCFA hosting | 200,000 to 450,000 FCFA | 0 to 500,000 FCFA depending on volume |
| Installation | Web link, no store | Play Store or APK | App to install |
| Offline autonomy | Several days, hundreds of records | Unlimited | Good |
| Specific business logic | Full | Full | Limited |
| Updates | Instant, no agent action | Through the store | Form reload |
The PWA wins when business logic is specific (pricing, cross-checks, linking to customer files) and the phone fleet is mixed. Data is stored in IndexedDB, encrypted on the device, and a queue resends each record with a unique ID to prevent duplicates when connectivity comes back.
The hidden cost: phones, data and support
The app is only part of the budget. For 120 agents, plan for:
- Entry-level Android phones, 3 GB RAM minimum: 70,000 FCFA each, or 8,400,000 FCFA for a new fleet.
- Data plans: about 2 GB per agent per month with compressed photos, 2,000 to 3,000 FCFA per agent with Ivorian carriers, around 300,000 FCFA a month in total.
- Mobile device management (MDM): 1,000 to 2,500 FCFA per device per month to lock phones down and locate them if lost.
- Support and maintenance: 250,000 to 500,000 FCFA a month to fix issues, evolve forms and monitor sync.
Mini case study
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Yao, operations director of a data collection company in Abidjan, manages 120 agents who fill in 30,000 paper forms a month. Each form costs about 300 FCFA across printing, transport and re-entry, or 9,000,000 FCFA a month.
Phase 1: a PWA at 16,000,000 FCFA excl. tax and 40 new phones (the other 80 agents already have a compatible device), i.e. 2,800,000 FCFA. Investment: 18,800,000 FCFA (about 28,700 EUR). The first phase removes 45% of paper forms, saving 4,050,000 FCFA a month. Recurring costs (data, hosting, maintenance): 550,000 FCFA. Net gain: 3,500,000 FCFA a month, so the investment pays back in just over 5 months.
FAQ
How much does an offline app for field agents in Abidjan cost?
In 2026, budget 12 to 28 million FCFA excl. tax for a custom offline PWA, depending on the number of forms and the media collected. Phones, data and maintenance come on top.
How long can an agent work without coverage?
A well-built PWA stores several hundred records, or 3 to 7 days of work offline. Sync then takes a few minutes on a 3G network.
What if a phone is lost or stolen?
Local data is encrypted and the account can be revoked remotely. With an MDM tool at 1,000 to 2,500 FCFA a month, the device can also be located or wiped.
How long until production?
About 4 months: 6 weeks for the core and forms, 4 weeks for the dashboard, then a 2-week pilot with 15 agents before full rollout.
Does a PWA run on low-end phones?
Yes, on any recent Android with Chrome and at least 2 GB of RAM. For heavy photo use, 3 GB of RAM, a device around 70,000 FCFA, remains the comfortable minimum.
Let's scope your project. Tell us your number of agents, current forms and coverage areas, and we will price the app, the fleet and a 4-month plan. 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.
