Mobile app audit and strategic roadmap

for STIB-MIVB

Client

STIB-MIVB

Expertises

Mobile App Audit

Product & technology strategy

Belgium’s largest urban transport network runs on two mobile apps, used by nearly 400,000 people every month. For example, riders use them to plan routes, get real-time alerts, buy tickets and manage their MOBIB card, Belgium’s contactless smart card for public transport.

Before investing further, STIB-MIVB asked for an independent audit of both apps. In short, they wanted a solid, evidence-based foundation for future investment decisions.

Overview

The challenge: turning complexity into clarity

Both apps had evolved a lot since launch, with changing teams, shifting priorities and growing integration needs. As a result, STIB-MIVB needed an independent view of where each platform stood, and of the realistic options for their evolution.

First, we audited the iOS and Android apps at the same time, using the same method for both. In addition, our work for other transport operators, including TEC and Brussels Airlines, shaped the analysis beyond the code itself.

The audit scored six areas separately for each platform: software architecture, code quality, security and resilience, test coverage, performance, and documentation. Each score was also tied to specific findings and effort estimates.

Next, we grouped the findings by severity and attached an effort estimate to each one. Then we turned them into a prioritised improvement roadmap for both platforms.

We also made recommendations on governance and methodology. Because of them, STIB-MIVB knew how to structure future development and review practices, not only what to improve.

Three paths for the next stage of evolution

Tapptic modelled three paths forward. We then assessed each one for effort, risk and long-term development impact.

01 — CONTINUE
Build on the current architecture and development model, with targeted improvements where most needed. The lowest immediate level of intervention. As product scope expands, however, development constraints increase.

02 — EVOLVE
Address the highest-priority areas across both platforms. This path reduces risk, improves stability, and creates conditions for sustainable feature growth, without requiring a full rebuild.

03 — TRANSFORM
Move to a modernised architecture designed for longer-term evolution. The natural path when product scope is expanding significantly or a major UX overhaul is planned in parallel.

The outcome

Ultimately, STIB-MIVB moved from technical uncertainty to a structured, quantified view of both platforms and three credible paths forward. We translated the findings into business terms: prioritised risk, effort per scenario and clear strategic options.

Tapptic combined technical depth with effort modelling and strategic framing. So a complex mobile landscape became a clear basis for decisions.

Veolia

RBFA