I want to write a app that connects to my own services on the server for free. What is the best solution

If you want to build an app that connects to your own services on a server for free, there are several options available:

1. Use a cloud hosting provider that offers a free tier: Cloud hosting providers like AWS, Google Cloud Platform, and Microsoft Azure offer free tiers that provide access to their services for a limited period or with limited capabilities. You can use these free tiers to host your own services and connect to them from your app.
2. Use a free and open-source web framework: There are several free and open-source web frameworks available that you can use to build and host your own services. Examples include Flask, Django, and Node.js. You can deploy your services on a server for free using services like Heroku or Google Cloud Run.
3. Host your own server: You can also host your own server at home or in the cloud using a platform like Raspberry Pi or a virtual machine. You can then connect to your server from your app.
4. Use a free API gateway: API gateways like API Gateway by AWS or Kong Community Edition allow you to build, deploy, and manage APIs for free.

It’s important to note that while these options may be free, they may come with limitations and usage caps. You should carefully review the terms of service and usage limits before choosing an option for your app.