https://app4mobile.pl/en/blog/ Guides on mobile apps, websites, web applications and AI. en Thu, 05 Nov 2026 08:00:00 +0100 https://app4mobile.pl/en/blog/react-native-vs-native-app/ https://app4mobile.pl/en/blog/react-native-vs-native-app/ Thu, 05 Nov 2026 08:00:00 +0100 Mobile apps React Native, Flutter or native in Swift and Kotlin? We compare cost, performance and maintenance to help you choose the technology for your mobile app. https://app4mobile.pl/en/blog/pwa-vs-mobile-app/ https://app4mobile.pl/en/blog/pwa-vs-mobile-app/ Thu, 05 Nov 2026 08:00:00 +0100 Web apps Progressive Web App or an app in the App Store and Google Play? We compare the capabilities, costs and limitations of PWAs and suggest when to choose which. https://app4mobile.pl/en/blog/how-to-publish-an-app-app-store-google-play/ https://app4mobile.pl/en/blog/how-to-publish-an-app-app-store-google-play/ Thu, 05 Nov 2026 08:00:00 +0100 Mobile apps How to publish an app in the App Store and Google Play: developer accounts, D-U-N-S, testing, privacy policy, review and the most common reasons for rejection. https://app4mobile.pl/en/blog/how-much-does-a-mobile-app-cost/ https://app4mobile.pl/en/blog/how-much-does-a-mobile-app-cost/ Thu, 05 Nov 2026 08:00:00 +0100 Mobile apps How much does it cost to build a mobile app for iOS and Android? We explain what drives the price, the common billing models and how not to overpay. https://app4mobile.pl/en/blog/how-much-does-a-website-cost/ https://app4mobile.pl/en/blog/how-much-does-a-website-cost/ Thu, 05 Nov 2026 08:00:00 +0100 Websites How much a business website costs: one-page site, company website and landing page. One-off and recurring costs, CMS or not, and what you really pay for. https://app4mobile.pl/en/blog/how-to-improve-core-web-vitals/ https://app4mobile.pl/en/blog/how-to-improve-core-web-vitals/ Thu, 05 Nov 2026 08:00:00 +0100 Websites What Core Web Vitals (LCP, INP, CLS) are, which values Google considers good and how to speed up your website step by step. A practical guide. https://app4mobile.pl/en/blog/how-to-plan-an-app-mvp/ https://app4mobile.pl/en/blog/how-to-plan-an-app-mvp/ Thu, 05 Nov 2026 08:00:00 +0100 Product What an MVP is, how to choose features for the first version of an app, how to prepare a brief for a software house and how to measure whether the idea works. https://app4mobile.pl/en/blog/ai-chatbot-for-business/ https://app4mobile.pl/en/blog/ai-chatbot-for-business/ Thu, 05 Nov 2026 08:00:00 +0100 AI & automation How to implement an AI chatbot in a company: what RAG is, how the bot uses your documents, what it costs and how to handle GDPR and answer accuracy. https://app4mobile.pl/en/blog/custom-web-app-instead-of-excel/ https://app4mobile.pl/en/blog/custom-web-app-instead-of-excel/ Thu, 05 Nov 2026 08:00:00 +0100 Web apps When spreadsheets stop being enough and a custom web system is worth building: warning signs, off-the-shelf SaaS vs your own app, and how to start.