Tech blog
Lessons learned from projects — stack, architecture, IT business.
AI-written code in production — what we find most often in audits
Vibe coding has reached production. The patterns we find most often in audits of AI-generated code: missing input validation, committed secrets, N+1 queries and dead tests — with how to catch each of them.
Flutter vs React Native vs Kotlin Multiplatform in 2026 — which one when (and when to go native)
An honest comparison of Flutter, React Native, Kotlin Multiplatform and native development in 2026: performance, UI, code sharing, hiring — plus four decision questions that point to the right stack for your project.
How much does a mobile app cost in 2026 — a realistic budget breakdown (MVP vs product)
What a mobile app really costs in 2026: budget split by project stage, ranges for an MVP and a mature product, the multipliers that inflate quotes (payments, BLE, compliance) and the hidden costs of maintenance.
KSeF 2.0 integration — how to connect your own system to the e-invoicing API
A practical guide to integrating with Poland's KSeF 2.0 e-invoicing API: authentication, sessions, the FA schema, status polling, UPO handling, idempotency and fallback modes — plus a rollout plan before the penalty-free period ends.
Mobile app for e-commerce — when it pays off and when a PWA is enough
Native app or PWA for your online store? Real differences, the iOS push problem, when each option pays off and how to decide on your own numbers: mobile traffic, purchase frequency and the role of notifications in revenue.
5 signs your mobile app is quietly dying
Mobile apps don't die with a bang — they die quietly. Five signs yours is already at that stage: no release for a year, a rising crash rate, the only developer gone, a build that takes many minutes and unread warnings from the app stores.
Mobile app for a medical clinic — e-visits, GDPR and legal requirements
How to build an app for a clinic: e-visits, e-prescriptions, GDPR and health data, integration with the P1 e-health system and the legal requirements to settle before the first line of code is written.
Mobile app for a transport and logistics company — fleet, GPS and offline mode
Fleet tracking, driver jobs, electronic proof of delivery and cargo scanning — plus why offline-first architecture and the GPS-versus-battery trade-off decide whether a logistics app works where coverage runs out.
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