Mendix

Mendix is a low-code platform for building and operating applications and agents, aimed primarily at organizations developing business software. It combines visual modeling with custom-code extensions and deployment options that reach from public cloud to air-gapped environments. It is a stronger fit for teams with substantial application requirements than for a small project seeking a low-cost production platform.

Overview

Studio Pro represents application logic, data, workflows, and user experience through structured visual models. That gives teams a common way to shape an application while leaving room for custom code when visual modeling is not enough. AI is integrated across planning, generation, deployment, and operations, and the platform can connect external LLMs, agents, knowledge bases, and tools. This breadth may serve complex business work well, but it is more capability than a small personal app is likely to need.

The Mendix Connect Catalog can be populated with connectors to enterprise sources such as Siemens Teamcenter, SAP, and other Mendix applications. Deployment can target public cloud or on-premises environments, including air-gapped setups—a meaningful option for organizations with strict hosting constraints. Mendix was founded in Rotterdam in 2005 and acquired by Siemens in 2018.

Key features

Visual development with code extensions: Teams can model logic, data, workflows, and user experience together, then add custom code where requirements call for it. That balances a visual approach with flexibility, rather than limiting projects to what can be expressed in models.

AI and external connections: AI spans the development lifecycle, while external models, agents, knowledge bases, and tools can be connected. The Connect Catalog can also hold enterprise data connectors, including for SAP and Siemens Teamcenter. These options suit organizations working across existing systems, though the platform’s breadth is unlikely to matter for a simple standalone app.

Deployment flexibility: Public-cloud and on-premises deployment, including air-gapped environments, give teams choices when infrastructure or network restrictions shape where an app can run.

Built-in application capabilities: Mendix includes a database, user authentication, and API integrations. It supports mobile publishing and has an app limit of one on the free plan.

Security and continuity: Mendix describes security, governance, privacy, and compliance as priorities. Certifications, reports, and standards are available to customers and prospects upon request. Its certified Business Continuity Management System is available to enterprise-license customers and provides zero downtime in the event of a Mendix Runtime outage; that continuity provision is specifically relevant to enterprise licensing.

Pricing

Mendix uses a freemium model. The free package costs nothing and includes one deployment environment per application and unlimited users. It is positioned for exploring the platform, prototypes, and small personal applications. The trade-off is material for production: free excludes product support and guaranteed availability.

Standard — One App costs $1,090 a month for one app, up to three environments per app, Standard support from 9 AM to 5 PM, and a 99.5% uptime guarantee. Cloud deployment may cost extra. This is the paid option for a team with one business application that needs defined support and an uptime commitment.

Standard — Unlimited Apps costs $2,725 a month and adds unlimited apps while retaining up to three environments per app, Standard support from 9 AM to 5 PM, and a 99.5% uptime guarantee. Cloud deployment may cost extra. It fits organizations running multiple apps, but is a substantial step up from the one-app tier.

Premium — One App and Premium — Unlimited Apps have custom pricing. Both are aimed at mission-critical core systems and include flexible environments per app and Premium support 24/7. The one-app tier includes a 99.95% uptime guarantee; the unlimited-app tier also covers unlimited apps and includes the same guarantee. Premium support excludes local holidays. These tiers suit core systems where the stronger uptime commitment and round-the-clock support matter more than a published price.

Across the plans, the key decision is not just app count: free gives up support and availability guarantees, Standard limits each app to three environments, and cloud deployment can add cost on Standard. Premium replaces that environment cap with flexibility and raises the uptime guarantee, but requires a quote.

Platforms

Mendix supports Android, iOS, Linux, macOS, Windows, web, and self-hosted deployments. Its combination of mobile publishing and self-hosted deployment is useful for teams that need both mobile apps and control over hosting. Public-cloud deployment is also supported, with possible extra cost on Standard plans.

Who it's for

Mendix is best suited to organizations building business applications that need structured visual development, custom-code extensions, enterprise integrations, or control over deployment location. Free is a sensible way to explore or prototype when support and guaranteed availability are not requirements. Standard is aimed at most business applications; Premium is intended for mission-critical applications and core systems. A small personal project may find the paid tiers difficult to justify.

Pros and cons

Pro: Visual models and custom code can coexist, giving teams a structured starting point without closing off tailored development.

Pro: Public-cloud, on-premises, and air-gapped deployment options address a wider range of hosting constraints than a cloud-only approach.

Pro: Free includes unlimited users and a deployment environment per app, which supports exploration and prototyping without a user cap.

Con: Free excludes product support and guaranteed availability, making it a poor fit when production service commitments matter.

Con: Standard starts at $1,090 a month for one app, and cloud deployment may cost extra; multiple apps require the $2,725 a month tier.

Con: Standard provides up to three environments per app, while Premium pricing requires a quote and support excludes local holidays.

Alternatives

For a different low-code option, compare FlutterFlow: its free plan includes up to two projects, 10 Lite credits, five lifetime AI requests, and up to two API endpoints, while Basic costs $39 a month. Choose it when those project and credit allowances or its lower-priced Basic plan better match the scope of your work.

HCL Volt MX has a free option covering software, IaaS, and managed service with one environment and forum-based support. It is worth considering when that free environment and support model are a better fit.

AgilePoint NX offers a Community Edition with 25 named users and two applications. It may suit a team whose needs fit those specific user and app limits.

Bubble has a free Web + Mobile plan with one app editor, 50K workload units per month, and six hours of server logs. Consider it when those app-editor and workload allowances suit the project.

Retool offers a free plan and a Team plan priced at $10 a month, with separate builder and internal-user charges and 5,000 workflow runs per month. It is an alternative to compare when those seat-based costs and workflow allowance are relevant.

Oracle APEX is free with supported Oracle Database editions and carries no additional cost under that plan. It is worth considering when that database requirement aligns with your environment.

Claris FileMaker is a paid alternative with a free trial and a Starter plan covering five to ten users, three apps, and specified storage and API-data allowances. Consider it if that user and app scope fits better.

Lovable offers a free plan with daily build credits, monthly cloud and AI credits, and unlimited workspace members. Compare it when those free-tier allowances align with your needs.

Browse No-code app builders, Knowledge Graph Software, Web Development IDEs, AI App Builders, and Low-Code Development Platforms for more options.

Verdict

Choose Mendix if your organization needs visual application development without giving up custom code, enterprise connections, or deployment control. Its free tier is useful for exploration, but production teams should budget for Standard or request a Premium quote if core systems need flexible environments, stronger uptime, and 24/7 support. Look elsewhere if the monthly Standard price or free tier’s lack of support and guaranteed availability do not fit your requirements.