NitroPing sends push notifications to your iOS, Android, and web apps through Apple APNs, Firebase FCM, and Web Push, from a service you host yourself instead of a rented vendor. Create an app to receive its API key, register each device token with its platform, then send notifications to chosen devices with a GraphQL mutation. Provider credentials for APNs, FCM, and Web Push are stored encrypted per app, so several projects can share one instance with isolated keys and data. Delivery tracking records every send with its status, and analytics views show performance metrics and real-time updates as notifications land. Apps are managed with JWT sign-in and per-app API keys, rate limits protect the endpoints, and webhook secrets sign delivery callbacks to your servers. Native Swift and Kotlin SDKs handle registration inside iOS and Android apps, so the device side needs a few lines instead of a custom client. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.