The verdict in three sentences
For a Miami HVAC maintenance company with 25 technicians, a custom field service app costs USD 25,000 to 50,000 (our Dakar benchmark: 5,000,000 to 10,000,000 FCFA), depending on scheduling depth and integrations. It pays for itself through productivity: +30% jobs per day thanks to optimised routes and no more trips back to the office with paper tickets. Against an off-the-shelf SaaS at USD 25 per technician per month, custom becomes cheaper once the team grows, and it works offline, which matters in basements and plant rooms.
What the app includes, module by module
A field service app combines a mobile app for technicians and a back office for dispatch. 2026 ballpark figures:
| Module | Function | Indicative cost |
|---|---|---|
| Offline mobile app | Job sheets, sync when signal returns | USD 7,500 to 12,500 |
| Photo reports and customer signature | Before/after, on-screen signature, PDF sent | USD 3,000 to 5,000 |
| Scheduling and dispatch | Calendar, assignment by zone and skill | USD 4,500 to 10,000 |
| Geolocation and routing | Technician map, visit order | USD 2,500 to 6,000 |
| Maintenance contracts | Preventive visits generated automatically | USD 3,000 to 6,500 |
| Parts and refrigerant stock | Parts issued per job | USD 2,000 to 5,000 |
| SMS or WhatsApp customer alerts | Technician on the way, report sent | USD 1,500 to 3,000 |
| Management dashboard | Lead times, first-time fix rate, revenue per client | USD 1,000 to 2,000 |
An essential version (offline mobile, photo reports, simple scheduling) starts around USD 25,000. The full version with contracts, stock and dashboards reaches USD 45,000 to 50,000. Delivery takes 10 to 16 weeks.
Custom build or SaaS at USD 25 per technician?
International field service platforms are powerful but billed per user, per month, forever, and the price climbs as soon as you add modules.
| 3-year criterion | Off-the-shelf SaaS | Custom app |
|---|---|---|
| Upfront cost | Setup USD 2,500 to 7,500 | USD 25,000 to 50,000 |
| Monthly cost, 25 technicians | 25 x USD 25 = USD 625 | Hosting and maintenance USD 600 to 1,000 |
| Total over 36 months | About USD 25,000 to 30,000 | About USD 47,000 to 86,000 |
| Offline mode | Partial depending on vendor | Built in from V1 |
| Fit to your workflow | Generic | Exact |
| Data ownership | With the vendor | With you |
| Adding 10 technicians | +USD 250 a month, more with add-ons | No licence cost |
In Miami, entry-level SaaS often wins on pure 3-year cost at 25 users. Custom wins when the advanced tiers you actually need cost USD 60 to 100 per user, when you plan to scale past 50 technicians, or when your contract and parts logic does not fit a generic tool. In Dakar, the same comparison tips towards custom around year 3.
Mini case study
Carlos, operations director of an HVAC maintenance company in Miami, runs 25 technicians averaging 4 jobs a day. Paper tickets come back to the office every evening and invoicing lags by 5 days.
With a USD 38,000 app, routes are grouped by neighbourhood and reports go out from the phone: each technician reaches 5.2 jobs a day, i.e. +30%. Over 22 working days, that is 660 extra jobs a month. At a margin of USD 40 per job, the monthly gain is USD 26,400. The app pays for itself in under 2 months, and invoices go out the same day.
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FAQ
Does the app work without an internet connection?
Yes, that is the foundation. The technician fills in the ticket, takes photos and gets the customer signature offline; everything syncs when signal returns. Offline mode accounts for about 20% of the mobile budget.
Does each technician need a high-end phone?
No. An entry-level Android at USD 150 to 200 is enough. The app is optimised for 2 GB of RAM and a battery that lasts the day.
Can we take payment on site?
Yes, a card payment link through Stripe or Square can be sent at the end of the job (Wave or Orange Money in Dakar). This module costs USD 2,500 to 4,500.
How much is maintenance after delivery?
Budget USD 600 to 1,000 a month for hosting, Android and iOS updates and support. Major enhancements are quoted separately.
How quickly are technicians up and running?
Half a day of training is enough in most cases. We recommend a 2-week pilot with 5 technicians before full rollout.
Let's scope your project. Tell us your number of technicians, job types and maintenance contracts: we price an app between USD 25,000 and 50,000, delivered in 10 to 16 weeks. 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.
