Choose DigitalOcean Managed Postgres when a single $15.15 node is the budget. Choose PlanetScale when you want a sized cluster and schema branching, and you do not need a permanent free database.
DigitalOcean Managed Postgres
Fixed-size Postgres in the same account as Droplets
From $15.15/mo
Strengths
The entry price is a monthly cap for a 1 GiB node
It lives in the same account as Droplets and App Platform
Limits
You pay for the node while the database is idle
A standby node for high availability is a second plan