No-Code · head to head
Mendix vs Postgres
Mendix
No-Code
Siemens-owned low-code platform priced by app count, with cloud infrastructure billed separately
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Mendix the platform fee explicitly excludes compute and infrastructure costs, so the real all-in bill is the subscription plus a separate, less predictable cloud hosting charge.; Postgres each major version is supported for only 5 years after its initial release, after which it is end-of-life
- They diverge on capability: Mendix covers Visual app and process modelling, Postgres covers ACID compliance.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Mendix and Postgres actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Mendix
- Visual app and process modelling
- Free tier
- Multi-cloud deployment
- AI-assisted development
- Native mobile builder
- Marketplace connectors
Only in Postgres
- ACID compliance
- Complex queries
- Foreign keys
- Triggers
- Views
- Stored procedures
- JSON/JSONB support
- Full-text search
What people use each for
The jobs each tool is most often brought in to do.
Mendix
- A Siemens industrial software customer extending into application development on a platform already inside its vendor ecosystemnot Postgres
- A company building exactly one production app that wants the lower One App tier rather than paying for unlimited apps it does not neednot Postgres
- An enterprise standardising on Mendix across many departments where the Unlimited Apps tier amortises wellnot Postgres
- A team wanting to evaluate low-code at zero cost before committing to a paid production tiernot Postgres
Postgres
- Running a general purpose relational database for applicationsnot Mendix
- Self-hosting an open source SQL database with no licence feenot Mendix
- Workloads needing extensions, JSON and full text search in one enginenot Mendix
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Mendix
- The platform fee explicitly excludes compute and infrastructure costs, so the real all-in bill is the subscription plus a separate, less predictable cloud hosting charge.
- The jump from a free or One App tier to Unlimited Apps is a large discrete price step (roughly 918 to 2,295 euros a month at published starting rates), not a gradual scale-up, which punishes a team that grows from one app to two.
- Being a Siemens business unit means Mendix roadmap priorities can be shaped by Siemens' broader industrial software strategy rather than purely by low-code market demand.
- Deployment flexibility across Mendix Cloud, Azure, Kubernetes and SAP BTP is a strength on paper but means the actual infrastructure cost and complexity vary significantly by choice, complicating like-for-like vendor comparisons.
- Premium-tier features and enterprise governance capabilities are quote-only, so a buyer cannot fully compare Mendix's top tier against OutSystems or Appian without entering a sales process.
Postgres
- Each major version is supported for only 5 years after its initial release, after which it is end-of-life
- Major version upgrades break on-disk compatibility and require a full dump and reload or the pg_upgrade tool
- New major versions ship about once a year, so staying supported means a disruptive upgrade cycle
- Minor releases contain only frequently-encountered bug fixes, low-risk fixes, security issues and data corruption fixes, so feature gaps are not addressed within a major version
- There is no vendor SLA; commercial support must be bought separately from third party professional services listed by the project
Pricing, plan by plan
Mendix
Free- FreeFree
- Unlimited users on one deployment environment
- No commitment or credit card required
- Suitable for evaluation and small-scale use
- Standard, One App$undefined/month
- Licenses a single application in production
- Cloud deployment and standard support options
- Compute and infrastructure costs billed separately
- Standard, Unlimited Apps$undefined/month
- Licenses unlimited applications under one subscription
- Per-user cost declines as user volume grows
- Discounted external (B2B/B2C) user rates available
- Premium$undefined/month
- Custom quote
- Enterprise-grade governance and 24/7 support
- Advanced deployment and compliance options
Postgres
Free- Community EditionFree
- Full database features
- No limitations
- Community support
Which should you pick?
Choose Mendix if
- You need visual app and process modelling.
- You want to start without paying.
- You work on Web, iOS, Android.
- You also want free tier.
Choose Postgres if
- You need acid compliance.
- You want to start without paying.
- You work on Linux, Windows, Macos, Docker.
- You also want complex queries.
Questions people ask
- Is Mendix or Postgres better?
- Neither clearly leads. Mendix starts at Free and Postgres at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Mendix or Postgres?
- Mendix starts at Free and Postgres at Free.
- Does Mendix or Postgres run on more platforms?
- Mendix runs on Web, iOS, Android. Postgres runs on Linux, Windows, Macos, Docker.
- Can I use Mendix for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Mendix best used for?
- Mendix is most often used for a siemens industrial software customer extending into application development on a platform already inside its vendor ecosystem, a company building exactly one production app that wants the lower one app tier rather than paying for unlimited apps it does not need, an enterprise standardising on mendix across many departments where the unlimited apps tier amortises well, a team wanting to evaluate low-code at zero cost before committing to a paid production tier. Of those, a siemens industrial software customer extending into application development on a platform already inside its vendor ecosystem and a company building exactly one production app that wants the lower one app tier rather than paying for unlimited apps it does not need are not what Postgres is typically brought in for.
- What can Mendix do that Postgres cannot?
- Mendix covers Visual app and process modelling, Free tier, Multi-cloud deployment, AI-assisted development. Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers.
Answered from the vendors’ own pages
Mendix: What is the difference between One App and Unlimited Apps?
One App licenses a single application in production; Unlimited Apps covers any number of apps under one subscription, at a materially higher starting price.
Postgres: How much does PostgreSQL cost to use?
PostgreSQL is completely free to download, install, and use. No licensing fees, subscription costs, or per-seat charges apply. The database is open source under the PostgreSQL License. Source: https://www.postgresql.org
SourceMendix: Does the licence include hosting?
No. Mendix states explicitly that compute and infrastructure resources are billed separately from the platform licence, regardless of deployment target.
Postgres: Are there commercial PostgreSQL support options available?
Official PostgreSQL (the project) is free. Commercial PostgreSQL services such as hosting, professional support, training, and managed database services are offered by third-party vendors, not the PostgreSQL project itself. Source: https://www.postgresql.org
SourceMendix: Who owns Mendix?
Siemens, which acquired Mendix in 2018 and runs it as part of its industrial software portfolio.
Postgres: Do I need a license to use PostgreSQL commercially?
No. PostgreSQL is open source under the PostgreSQL License, which permits free commercial use without royalties, licensing fees, or support obligations. Source: https://www.postgresql.org
SourceRelated pages
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