You can maybe save the 9$/month by replacing PostgreSQL with a more generous cloud database. Maybe Cloudant (https://www.ibm.com/cloud/cloudant/pricing https://

You can maybe save the 9$/month by replacing PostgreSQL with a more generous cloud database. Maybe Cloudant (https://www.ibm.com/cloud/cloudant/pricing https://www.ibm.com/cloud/cloudant/pricing) or Firestore (https://firebase.google.com/pricing/ https://firebase.google.com/pricing/). You should also check out the lambda services of google/azure/aws/webtask.io, maybe they are cheaper for your usage than the $7/month you are paying Heroku for the dyno.