# Ember > Ember is a Catholic prayer app in English and Brazilian Portuguese, with a companion website. Its developer portal documents the open Mass-times API: churches worldwide with the times of their Masses, confessions and adoration. There are no keys and no sign-up, and every response allows any origin. The whole portal in one file: https://ember.dpgu.me/llms-full.txt ## Developer docs - [Overview](https://ember.dpgu.me/developers.md): what is open, a quick start, and how to use it well - [Mass-times API](https://ember.dpgu.me/developers/api.md): endpoints, parameters, response schemas and examples - [OpenAPI document](https://ember.dpgu.me/developers/openapi.json): the Mass-times API as OpenAPI 3.1 ## Optional - [Visão geral](https://ember.dpgu.me/pt/desenvolvedores.md): o que está aberto, primeiros passos e bom uso (em português) - [API de horários de Missa](https://ember.dpgu.me/pt/desenvolvedores/api.md): rotas, parâmetros, schemas das respostas e exemplos (em português)