App-Entwicklung: Push Notifications & Realtime

Push Notifications& Realtime

An app that goes silent gets forgotten. Push notifications and realtime features keep users informed, increase return rates, and turn your app into a live channel rather than a static tool. We implement reliable push infrastructure and realtime connections for chat, live updates, and collaborative features – scalable and with well-designed opt-in logic.

Challenges you'll recognise

  • The majority of your users have disabled push notifications because they find them intrusive.
  • Your chat feature lags several seconds behind – users complain it does not feel real-time.
  • Push delivery rates are low and you cannot tell whether it is a technical or an opt-in problem.

Push Infrastructure

Reliable push notifications require more than a single API call. We set up the complete infrastructure: server-side delivery via APNs and FCM, token management, segmented audiences, and retry logic for failed deliveries. Your notifications arrive – even when the app is in the background or not currently active.

Opt-in Strategy

Aggressive push messaging loses users. We implement a thoughtful opt-in logic: contextual explanation before the system prompt, granular settings per notification type, and easy management inside the app profile. Users who consciously opted in open notifications far more often.

Realtime Connections

Chat, collaborative features, live scores, or real-time status updates require persistent connections. We implement WebSocket or SSE-based realtime infrastructure that scales with your app, handles graceful reconnects, and works efficiently with mobile network conditions.

Offline Handling

Realtime features must also behave sensibly offline. We implement local queues that buffer changes and synchronise on reconnect – so users on weak connections do not walk into a broken app experience.

Good to know

  • APNs and FCM Infrastructure

    Professional push notifications run through Apple Push Notification Service and Firebase Cloud Messaging. We build the server-side infrastructure that manages tokens, tracks deliveries, and handles errors automatically.

  • Realtime Without Polling

    Polling – the app repeatedly asking for updates – drains battery and burdens servers. WebSocket-based realtime connections deliver updates instantly and are more resource-efficient than a naive polling interval.

  • Privacy-Compliant

    Push notifications and realtime data must be processed in compliance with GDPR. We implement privacy-compliant opt-in flows and ensure no personal data is unnecessarily persisted.

Frequently asked questions

How do I stop users from disabling notifications?
Through relevance and timing. Notifications that arrive at the right moment and deliver real value get kept. We help you develop a notification strategy that informs users rather than annoys them.
What is the difference between WebSockets and push notifications?
Push notifications work even when the app is closed – they are delivered by the operating system. WebSockets are persistent connections within an active app session – ideal for chat or real-time collaboration.
Do push notifications scale as user numbers grow?
Yes, when the infrastructure is built correctly. We use specialised push services that efficiently handle millions of deliveries and implement batching strategies for mass sends.

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Why nextlevels

Success you can measure

With us you're always one step ahead technologically and tap directly into our extensive app development expertise. We take a close look at your app idea, identify key success factors and create tailor-made applications. Your visions and goals are at the heart of our joint project work.

  1. Expert knowledge in app technologies

    React Native, Flutter, native iOS and Android — we pick the stack to fit your project, not our preference.

  2. Comprehensive user experience know-how

    Intuitive operation and seamless interactions decide ratings and how long users stay in the app.

  3. Proven track record

    Published apps in the App Store and Play Store — from MVP to mature platform.

  4. Versatile team

    Concept, design, development and backend from one hand — no friction at the interfaces.

  5. Long-term partnerships

    We stay after launch and keep evolving your app with maintenance and updates.

READY FOR YOUR APP THAT SETS NEW STANDARDS?

Whether you want to optimize an existing app or bring a new vision to life – we'd love to meet you. A no-obligation conversation is always a great start.

Profile picture of Paul Kalisch, Executive Partner
Paul Kalisch
Executive Partner

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