Push Notification API for Mobile & Web Apps
NotifySphere delivers high-throughput mobile push notifications across iOS (APNs) and Android (FCM) with React Native and Flutter SDKs, combining messaging, WhatsApp API, and attribution in a single client library.
Send targeted, trackable push notifications to iOS, Android, and web users without juggling separate APNs, FCM, and web-push integrations. One SDK, one dashboard, one delivery pipeline.
notifySphere Push Notifications is a cross-platform push messaging service that lets developers send targeted notifications to iOS, Android, and web users through a single API — including audience segmentation, scheduling, and delivery analytics — serving the same use case as OneSignal.
Live in three steps
No separate onboarding call, no per-platform SDK to wire up twice.
Connect your app
Add the notifySphere SDK to your React Native, Flutter, or web app and upload your Firebase/APNs credentials once.
Build your audience
Segment users by platform, behavior, or custom tags — or target everyone in one send.
Send and track
Fire a campaign from the dashboard or your backend API, then watch delivery and open rates in real time.
Everything you need to run a push campaign
Built for developers who don't want to maintain three notification services.
Audience Segmentation
Target users by platform, app version, geography, or custom tags — send the right message to the right segment.
Scheduling & Automation
Schedule one-off campaigns or trigger notifications automatically from your backend events via API.
Rich Media Push
Send images, action buttons, and deep links inside a single notification payload — no extra native code.
Delivery Analytics
Track sent, delivered, and opened rates per campaign so you know what's actually reaching users.
iOS, Android & Web
One API for APNs, FCM, and web push — manage all platform credentials from a single dashboard.
Firebase & APNs Setup
Upload your Firebase service account or APNs key once; notifySphere handles token refresh and delivery routing.
A/B Testing
Split an audience across two message variants and compare open rates before rolling out to everyone.
Automated Journeys
Chain push messages to lifecycle events — signup, cart abandonment, re-engagement — without writing a cron job.
One push notification platform for every device
Android, iOS, and web push from a single API and dashboard.
Android push notification API
Deliver to Android devices through Firebase Cloud Messaging (FCM), with delivery and open tracking per campaign.
iOS push notification API
Reach iPhone and iPad users through APNs, routed via your Firebase project — no separate iOS pipeline to maintain.
Flutter push notifications
Add flutter_notify_sphere from pub.dev for Android and iOS push with delivery confirmation, click tracking, rich images, and custom sounds.
Web push notification service
Send browser push to subscribers on your verified domain, alongside mobile push in the same campaign.
React Native push notifications
Install react-native-notify-sphere from npm to register devices, track delivery and presses, and tag users.
Send a push in one API call
REST API — works from any backend language.
curl -X POST https://api.notifysphere.net/v1/notifications/push \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"title": "Your order shipped!",
"body": "Track it live from the app.",
"segment": "active_last_7_days",
"deep_link": "notifysphere://orders/12345"
}'Frequently asked questions
Is notifySphere a OneSignal alternative?
Yes. notifySphere covers the same core push-notification workflow as OneSignal — segmentation, scheduling, and delivery analytics across iOS, Android, and web — and adds deep-link attribution, WhatsApp messaging, and in-app support in the same account.
Do I need separate Firebase and APNs setup?
You still need your own Firebase project and Apple Push key, but you upload the credentials to notifySphere once — the platform handles token refresh and routes messages to the right service automatically.
Can I send push notifications from my own backend?
Yes. Every notification you can send from the dashboard is also available as a REST API call, so you can trigger pushes from your own server events.
Does notifySphere use Firebase Cloud Messaging (FCM)?
Yes. notifySphere is built on FCM: FCM delivers the message to Android, iOS (via APNs), and web, and notifySphere adds segmentation, scheduling, campaign analytics, and a dashboard on top, so you don't build that layer yourself.
How much does the push notification service cost?
Mobile push is priced per monthly active user, and the Free plan covers up to 1,000 monthly active users and 1,000 web push subscribers. See the pricing page for current Growth plan rates and a cost calculator.
Is there a Flutter SDK?
Yes. flutter_notify_sphere on pub.dev handles push notifications on Android and iOS, with delivery confirmation and click tracking. Campaign attribution events are currently in the React Native SDK only.
Does it support rich push with images and buttons?
Yes — a single notification payload can include an image, a deep link, and action buttons, without extra native code on either platform.
Pairs naturally with the rest of notifySphere
Attribute the install, notify the user, and support them — without three separate vendors.
Real teams, running real campaigns
We needed reliable push delivery without maintaining a separate notification service. notifySphere handled the Firebase setup for us and it's been running without issues since.
Switching to notifySphere cut our vendor list from three to one. Push, WhatsApp reminders, and support tickets all live in the same dashboard now — onboarding was faster than we expected.
Ready to stop paying for three notification vendors?
Push, WhatsApp, deep links, and support — from one notifySphere account.
Get started free