Really I can't find right answer from vendor so I asked her.
I didn't ask her but it, Perplexity
Answer
To estimate the cost of Firebase Cloud Messaging (FCM) messages per month and the maximum number of messages per month, you can refer to the Firebase Pricing page (
https://firebase.google.com/pricing).
According to the Firebase Pricing page, FCM allows you to deliver and receive messages and notifications on iOS, Android, and the web at no cost. This means that sending messages through FCM does not incur any additional charges.
However, it's important to note that Firebase pricing is based on usage costs outlined in the Blaze plan. The Blaze plan offers a pay-as-you-go model, where you pay only for the resources you use. The pricing for other Firebase services, such as Cloud Firestore and Cloud Functions, may apply depending on your usage.
To get a more accurate estimate of the cost for your specific use case, you can use the Firebase Pricing Calculator available on the Firebase Pricing page. The calculator allows you to input your expected usage and provides an estimate of the monthly cost.
As for the maximum number of messages per month, Firebase does not impose a specific limit on the number of messages you can send through FCM. However, there may be certain limitations based on the platform you are targeting (iOS, Android, or web) and the capabilities of the devices receiving the messages. It's always a good practice to review the documentation and guidelines provided by Firebase for sending messages to ensure optimal performance and compliance with platform-specific limitations.
Please note that the pricing and limitations mentioned here are based on the information available at the time of writing this response. It's recommended to visit the Firebase Pricing page for the most up-to-date and comprehensive information on pricing and limitations
