Diagnostyka operates Poland's largest private diagnostics network — millions of patients, hundreds of collection points, and years of digital infrastructure built around web. When the team decided to build a dedicated mobile app, they faced a problem familiar to every large service organisation at this stage: the ambition was clear, the window was tight, and the data involved was too sensitive to cut corners. Three months to a working product, a high-visibility launch event on the horizon, no margin for a soft opening.

We partnered with Diagnostyka's Digital Hub team to take the project from concept to the launched product — on time, on spec, and built to scale. The collaboration didn't end at launch. We're now deep into Diagnostyka mobile 2.0 together, extending the platform as patient numbers grow.

01. Delivering under a hard 3-month deadline

The launch was tied to a major industry event. There was no grace period, no soft rollout to iron out early issues. The app had to be enterprise-grade from day one — polished, stable, and ready to demo to an audience that would judge it immediately.

02.  Moving the patient relationship from web to mobile without friction

Diagnostyka's web platform had carried the digital load for years. The challenge wasn't just building an app — it was creating a mobile experience compelling enough to become patients' primary channel, not just an alternative they might occasionally use.

03. Protecting sensitive health data while moving fast

Medical data doesn't forgive shortcuts. Building security in properly under a tight timeline without creating technical debt that would become a liability in production required deliberate architectural decisions from the first week, not the last.

04. Integrating into a live enterprise ecosystem without disruption

Diagnostyka runs on interconnected systems built over years: lab processing, patient records, AI-driven diagnostics infrastructure. The mobile app had to connect cleanly into all of it — reading live data, respecting existing logic — without requiring changes to core infrastructure that would ripple into production.

05. Serving Poland's actual patient population from day one

Diagnostyka's network serves millions of patients across age groups, levels of digital fluency, and language backgrounds. Accessibility and multilingual support couldn't be a post-launch addition; they had to be baked into the architecture from the start.

01. Starting with alignment

Before writing a line of code, we ran discovery workshops with Diagnostyka's cross-functional team — product, tech, and clinical operations in the same room. The goal wasn't to collect requirements. It was to surface the business constraints that would define every major decision in the build. That alignment held the project together when the timeline got tight.

02. A scope built for adoption

We made a deliberate call: fewer features, built properly. mojeID login, biometric authentication, real-time result access, push notifications — chosen because they covered the highest-frequency patient interactions with no workarounds required. The result was an app patients used because it worked, not because they were told to.

03. Security architecture that would survive scrutiny

We applied OWASP Mobile Level 2 standards — the same framework used in banking applications. We built authentication on passwordless and biometric methods that reduce the attack surface while improving the patient experience. Diagnostyka's data governance team had visibility throughout. The app runs on Google Cloud Platform with Vertex AI, with all data processed in Google's Warsaw data centre — fully within Polish and EU regulatory boundaries.

04. Surfacing intelligence that was already there

Diagnostyka integrated with Labplus — an AI-driven system that analyses lab results and tracks patient health trends. We integrated it directly into the mobile experience, giving patients access to contextual health insights alongside their raw results. The AI wasn't added as a feature; it was surfaced from infrastructure Diagnostyka had already invested in.

05. Designed for real patients, not ideal users

Accessibility and multilingual support were built into the architecture from day one. For a network the size of Diagnostyka, this isn't a nice-to-have. It's a legal and operational requirement, and treating it as such from the start meant no expensive retrofitting later.

01. 360% growth in the user base

After the 2.0 launch, the platform's user base grew 360% — thanks to a product patients found worth returning to. For Diagnostyka this validated the strategic bet: mobile as a primary patient channel.

02. A direct channel that replaced intermediated touchpoints

Before the app, patient communication ran through web, email, and call centre. The mobile app created an owned, direct channel — push notifications replacing email for routine updates, in-app access replacing calls for result queries. Diagnostyka now reaches patients directly, without depending on intermediaries.

03. 4.7 stars — top-rated in the medical category

Strong app store ratings across both iOS and Android — driven not by incentivised reviews, but by patients finding what they needed without friction. In healthcare, where trust is the product, that rating is evidence the channel works.

 04.  On time, on spec — and straight into phase two

The three-month delivery window held. No scope cuts, no post-launch fire-fighting, no technical debt blocking the next phase. Phase two was initiated within weeks of launch — and that programme is now live, extending the platform with AI-powered preventive care tools as patient adoption continues to grow.

05. Award-winning impact

Our joint effort with Diagnostyka Digital Hub resulted in the app winning the Mobile Trends Awards 2024 in the “Services & Daily Life” category, recognition of its tech, UX, data security, and real benefit to patients.