AWS RDS vs PostgreSQL: Which Should You Choose in 2026?
Choosing between AWS RDS and PostgreSQL comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated April 15, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
AWS RDS
Managed relational database service
Best for you if:
- 0
- • You need cloud storage features specifically
- • Amazon RDS is a managed relational database service that automates administrative tasks like provisioning, backups, and patching.
- • It supports multiple database engines including PostgreSQL, MySQL, MariaDB, SQL Server, Oracle, and Db2, with deployment options like Multi-AZ for high availability and RDS Custom for OS/DB environment customization.
PostgreSQL
Advanced open source SQL database
Best for you if:
- 0
- • You need something completely free
- • You need database builders features specifically
- • PostgreSQL is an advanced open-source relational database
- • It provides extensibility, standards compliance, and enterprise features
| At a Glance |  AWS RDS |  PostgreSQL |
|---|---|---|
Price | Paid | Free |
Best For | Cloud Storage | Database Builders |
Rating | — | — |
| Feature | AWS RDS | PostgreSQL |
|---|---|---|
| Pricing Model | Usage-based | Free |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 203 | 0 |
| Categories | Cloud StorageManaged Databases | Database BuildersManaged Databases |
How AWS RDS and PostgreSQL Compare
AWS RDS
Managed relational database service
Paid
PostgreSQL
Advanced open source SQL database
Free
AWS RDS is a cloud storage tool. PostgreSQL is in database builders.
Who Should Use What?
On a budget?
PostgreSQL is free. AWS RDS is usage-based.
Go with: PostgreSQL
Want the highest-rated option?
Neither has user reviews yet.
Go with: AWS RDS
Value user reviews?
Neither has user reviews yet.
Go with: AWS RDS
3 Questions to Help You Decide
What's your budget?
AWS RDS is usage-based. PostgreSQL is free. Go with PostgreSQL if free matters most.
What's your use case?
AWS RDS is a cloud storage tool. PostgreSQL is in database builders. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
AWS RDS
- 0
- More community upvotes (203)
- Our pick for this comparison
PostgreSQL
- Completely free
- Better fit for database builders
The Bottom Line
AWS RDS is our pick. That said, PostgreSQL is free — hard to beat on price.
Frequently Asked Questions
Is AWS RDS or PostgreSQL better?
AWS RDS is rated high in our evaluation. AWS RDS is usage-based and PostgreSQL is free.
What are AWS RDS and PostgreSQL used for?
AWS RDS: Managed relational database service. PostgreSQL: Advanced open source SQL database.
What does AWS RDS cost vs PostgreSQL?
AWS RDS is a paid tool. PostgreSQL is completely free. Visit their websites for detailed pricing.