Since 2014

Custom mobile applications

Responsive and customized support

At FlexiApps, we help Product and IT teams ship custom mobile applications with high standards for performance, security, and governance. From day one, we focus on clarity: measurable business goals, explicit roles on both sides, verifiable acceptance criteria, and a realistic path to production.

Each engagement is structured around KPI-driven Discovery, tooled governance (short rituals, transparent RACI), a testable SOW (deliverables, milestones, acceptance), rigorous quality & security (testing, performance budgets, GDPR), and results-oriented TMA (stability, enhancements, release trains). The outcome: an application tailored to your context, delivered fast at the right quality bar, and ready to evolve without hidden debt.

Need fast scoping? Talk to an expert — 24-hour quote and a MVP → V1 → iterations plan

Développement d’applications mobiles sur-mesure

Agence de développement sur mesure

In 2026, more companies are choosing custom mobile applications to deliver truly personalized experiences. Unlike app generators, a custom project demands tight scoping (Discovery), clear governance, a verifiable SOW, strong QA/security, and TMA that’s driven by data. The outcome: a high-performing, scalable — and profitable — Android & iOS application.

Myth: “Build a complex app in 1 week.”
Reality: a MVP typically takes 8–12 weeks, and a V1 10–16 weeks, depending on scope and integrations.

Why go custom in 2026?

  • Product differentiation: native UX and features tailored to your use cases.

  • Performance & security: performance budgets, encryption, hardening, GDPR compliance.

  • Scalability: modular architecture, integrations (payments, SSO, ERP/CRM).

  • Data-driven: analytics, crash-free monitoring, A/B testing.

For a broader overview, see Mobile app development.

The key phases of a custom project

1) Discovery: scoping & risk

  • Objectives & KPIs (D+7 activation, D+90 repeat purchase, crash-free rate).

  • Personas & journeys; strict prioritization MVP → V1.

  • Backlog and SOW (assumptions, exclusions, acceptance criteria).

👉 Need dedicated scoping? Custom mobile development

2) UX/UI & prototyping

  • Wireframes, interactive mockups, reusable design system.

  • User testing and fast iterations.

3) Android & iOS development

  • Native (Kotlin / Swift): maximum performance & hardware access.

  • Cross-platform (React Native): faster time-to-market and budget efficiency.

  • Modular architecture, API-first, integrations (payments, SSO, CRM/ERP).

  • Delivery: CI/CD, pre-prod, code reviews.

→ Choose your stack: Android & iOS (native) · Cross-platform · Native

4) QA & security

  • Unit, integration, functional and E2E tests on critical paths.

  • Performance: cold start, memory, smoothness, APK/IPA size.

  • Security/GDPR: encryption, hardening, permission reviews, consent, data minimization, logging, incident plan.

5) Store release & ASO

  • Prepare assets (screenshots, copy, privacy labels).

  • Submissions to App Store & Google Play.

  • ASO: keywords, A/B tests, review replies.

6) TMA & ongoing evolution (run & change)

  • SLA for corrective/evolutive work; monitoring (crash-free, performance), OS/device compatibility.

  • Bi-weekly release trains, A/B testing, data-driven prioritization.

What does it cost in 2026?

Forget the “magic grid”; focus on these 6 levers:

  1. Scope & UX complexity (journeys, roles, offline).

  2. Integrations (payments, SSO, ERP/CRM, maps, chat).

  3. Performance level (animations, legacy devices).

  4. Security & compliance (GDPR, encryption, hardening).

  5. Design & accessibility (design system, i18n).

  6. QA & TMA (test automation, monitoring, MTTR).

Healthy path: ship a MVP to validate assumptions, then V1 to expand, then iterate in short cycles.

Real-world cases & KPI

  • Retail — E-commerce app (PAUL): ordering & delivery, online/cash payments, real-time tracking, loyalty. V1 in 14 weeks. → PAUL reference

  • Food delivery — Livry: restaurant selection, live tracking, reviews, multiple payments. Crash-free > 99.8%. → Livry reference

  • Insurance — AFMA: reimbursement tracking, claims, agency geolocation, account creation via CIN. → AFMA reference

More projects on References.

Indicative timelines (ballpark)

  • MVP: 8–12 weeks (lean scope).

  • V1: 10–16 weeks (integrations + QA/perf).

  • Enhancements: 2-week sprints / planned releases.

FAQ — Custom mobile applications (2026)

Native or cross-platform: which should we choose?
A. Native (Kotlin/Swift) for maximum performance & deep hardware access; cross-platform (Flutter/React Native) for faster time-to-market and budget. We decide during Discovery.

What does a SOW include?
A. Scope (in/out), deliverables, milestones, acceptance criteria, assumptions/exclusions, change management, and UAT.

What QA/security guarantees do you offer?
A. Unit/integration/E2E tests, performance budgets, encryption, hardening, permission reviews, GDPR by design (consent, minimization, logging, incident plan).

Do you provide TMA?
A. Yes — corrective/evolutive SLA, crash/perf monitoring, OS/device compatibility, bi-weekly release trains, and data-driven prioritization.

Do you have an app project?

Consult our experts for a free estimate.