The verdict in three sentences
In Toronto in 2026, a custom internal app (mobile-friendly, offline mode, role management) costs between 38,000 and 85,000 EUR (about 46,000-102,000 USD) over 3 to 6 months. Low-code (Retool, Airtable) starts faster and cheaper but costs 20 to 60 EUR/user/month — quickly prohibitive at scale and with no data ownership. The right call depends on user count, offline needs and data sensitivity.
Custom vs low-code: the real comparison
Low-code is excellent for a simple internal tool, few users, no offline constraint. Custom wins as soon as usage becomes strategic or large-scale.
| Criterion | Low-code (Retool/Airtable) | Custom build |
|---|---|---|
| Upfront cost | 0-5,000 EUR | 38,000-85,000 EUR |
| Recurring cost | 20-60 EUR/user/month | Maintenance 900-2,700 EUR/mo |
| Offline mode (field) | Limited / none | Full |
| Data ownership | With the vendor | With you |
| Customization | Capped | Unlimited |
| Cost at 100 users | 24,000-72,000 EUR/yr | Fixed |
From 30-50 active users, low-code often becomes more expensive than a custom build over 2-3 years.
Custom build cost per module
A field internal tool has specifics: it must work without network, on mobile, with clear roles.
| Module | Timeline | Indicative cost |
|---|---|---|
| Foundation + auth + roles | 3-4 wks | 10,000-16,000 EUR |
| Mobile-friendly interface | 3-5 wks | 11,000-19,000 EUR |
| Offline mode + sync | 3-5 wks | 11,000-21,000 EUR |
| Payroll / HR integration | 2-4 wks | 8,000-15,000 EUR |
| Reporting + exports | 2-3 wks | 7,000-12,000 EUR |
Plan 900 to 2,700 EUR/month of maintenance depending on user count and how critical the tool is.
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Mini case study
Julien, COO of a maintenance SME in Toronto, equips 45 field technicians. In low-code at 45 EUR/user/month, the bill would reach 24,300 EUR/year — with no reliable offline mode, yet his teams work in no-network zones.
He picks a custom tool at 60,000 EUR (foundation, mobile, offline+sync, payroll integration), delivered in 4 months, maintenance 1,500 EUR/month. Over 3 years, low-code would cost ~73,000 EUR (subscriptions) without meeting the offline need; the custom build totals 60,000 + 54,000 = 114,000 EUR but with full ownership and offline. The trigger here is not price but the non-negotiable offline requirement and payroll data control.
FAQ
What does an internal app cost in 2026? Between 38,000 and 85,000 EUR custom; low-code starts at 0-5,000 EUR but costs 20-60 EUR/user/month.
When should I choose low-code? For a simple tool, few users (under 30), no offline need and no strong data-ownership constraint.
When does custom pay off? Often from 30-50 active users or when offline and customization become essential.
What is the delivery timeline? From 3 to 6 months for a custom tool; low-code can ship in a few weeks.
Is offline mode expensive? Plan 11,000 to 21,000 EUR for robust offline + sync, essential for field teams.
Let's scope your project. Give us your user count, offline needs and budget, and we'll decide between low-code and custom with the numbers on the table. 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.
