APPSS, Mendix, OutSystems and Microsoft Power Apps

    Less code. Still a development project.

    Low-code speeds up development. User licensing, platform dependencies and application maintenance remain. Even when AI generates apps and logic through MCP. APPSS delivers your business model on an existing managed server, without per-user fees.

    Your dedicated APPSS server from €295 / month

    Server subscription excluding VAT. Business design, frontend, development and external services are agreed separately.

    What does MCP change, and what stays?

    MCP connects AI to tools, data and actions. Power Apps and OutSystems also use it to build or change apps and logic. The result still needs testing, permissions and release management. Dataverse can also read and change business data through MCP. The connection itself does not replace a business model, application or operations service.

    What are you buying for your business application?

    Mendix

    Application development platform

    Standard from €918 / month

    The public One App starting price. Unlimited Apps starts at €2,295 per month. Apps and users determine licensing; cloud compute is separate.

    Build, configuration and application operations sit with your team or a separate service. Free supports prototypes and small applications, without the support and availability of a paid plan.

    OutSystems

    Agentic Systems Platform

    By quotation

    Pricing reflects application size, users and additional capabilities. Application Objects measure screens, database tables and API methods, among other elements.

    AI development and infrastructure are part of the platform. Your application, extra environments and required services need an appropriate proposal.

    Microsoft Power Apps

    Apps within Microsoft Power Platform

    €17.30 / user / month

    Power Apps Premium, billed yearly excluding VAT, at the Dutch list price. The assigned user can run unlimited apps; Dataverse capacity has defined entitlements and add-ons.

    The free Developer Plan is for building and testing. Design, formulas, flows, integrations and application operations remain work for your team or partner. AI and additional services have their own licensing terms.

    APPSS

    Your business server as a service

    €295 / €495 / month

    Dedicated as a Service or Managed Sovereign Cloud. One fixed APPSS price for your chosen server service, without user, employee or agent tiers.

    We deliver your business design, rules and own client-facing frontend on the existing server. Setup and development are agreed separately. Enterprise and Building your platform: on request.

    Compare the complete scope: platform or server, setup, frontend, integrations, operations and changes. These monthly starting prices are not equivalent project quotes. AI-provider API costs and other external services remain separate.

    The business case for low-code is changing

    Your business model runs. Your subscription stays the same.

    Bring your whole business in

    More employees, customers or authorised agents do not increase your APPSS subscription. Your success does not trigger extra licences. New delivery work and actual external costs are agreed in advance.

    Build on an existing server

    Facts, data storage, rules, checks, dependencies and APIs come together on the APPSS engine. No separate database plan for your application. We configure the business model; your frontend and existing systems connect to it.

    Have your next feature delivered

    You describe the improvement. Our internal agentic team designs and develops; APPSS reviews and tests before release. You receive a working change within the agreed scope, with operations and support under your SLA.

    How we deliver development & design as a service

    The decision behind the price tag.

    When more people join

    Mendix
    Paid plans account for application users. Anonymous users and developers are not charged; external users have specific pricing arrangements.
    OutSystems
    Internal and external non-anonymous end users are counted separately in the proposal.
    Microsoft Power Apps
    Premium is licensed per assigned user. Existing Microsoft licences can provide limited use rights; check your apps, connectors and participants against the appropriate plan.
    APPSS
    No price per user, employee or agent. Permissions govern access without an extra APPSS user licence.

    When your application changes

    Mendix
    Your team or partner builds and maintains the application with Mendix development and AI capabilities.
    OutSystems
    Your team or partner builds with AI and platform tools. Additional application size can affect licensing requirements.
    Microsoft Power Apps
    Your makers or partner maintain apps, Power Fx formulas, flows and connectors. Changes also need tests, permission checks and deployment between environments.
    APPSS
    Your rules and dependencies stay explicit on the same server. We review impact and check new and existing tasks, integrations, permissions and agreed performance before release.

    Who delivers the next step

    Mendix
    The platform licence provides tools. Design, implementation and application maintenance are delivered by your team or service provider.
    OutSystems
    Platform, infrastructure and development tools are available. Agree application delivery and maintenance with your team or provider.
    Microsoft Power Apps
    Microsoft provides the platform. Your team or partner delivers the business design, working application and ongoing application operations.
    APPSS
    APPSS delivers the application and managed server service. We agree design, development, responsibilities and support together.

    Where your business software runs

    Mendix
    Public cloud, private cloud and server deployment are available. Standard and Premium licence prices exclude compute.
    OutSystems
    Cloud, on-premises, private and sovereign cloud are offered. Deployment and extra environments follow the selected plan.
    Microsoft Power Apps
    Power Apps and Dataverse run within Microsoft Power Platform. Connecting on-premises data through a gateway is different from hosting the Power Apps runtime yourself.
    APPSS
    A managed dedicated APPSS server, managed APPSS in your chosen cloud or suitable infrastructure of your own. No separate application database plan required. We agree compatibility, capacity, operations and handover in advance.

    Platform logic and dependencies

    Mendix
    Your models, microflows and components run on Mendix Runtime. Changing cloud does not change that application technology.
    OutSystems
    Your application is built and run within OutSystems. AI-generated changes remain part of that platform application.
    Microsoft Power Apps
    Power Fx, flows, Dataverse and connectors introduce their own dependencies. That combination must remain consistent through changes and releases.
    APPSS
    Data, rules, permissions and actions come together in your APPSS business model. We agree integrations, operations and portability upfront. APPSS is also a platform choice.

    When AI works through MCP

    Mendix
    AI assistance does not automatically change who tests, deploys and maintains your application.
    OutSystems
    OutSystems MCP lets AI build, change and deploy apps within ODC, using the existing platform permissions and governance.
    Microsoft Power Apps
    Authoring MCP helps generate canvas apps and code. Dataverse MCP also exposes data and actions. Neither removes the need for application operations.
    APPSS
    Authorised agents use your application’s tested data and actions. The business model on your server defines the rules; development and operations follow our agreement.

    Mendix, OutSystems and Power Apps also offer process models, business logic, AI and governance. APPSS combines the existing application server, integrated storage, an executable business model and our development and operations service without per-user pricing. Assess your process rules, checks and dependencies, and what is needed to keep them working through change.

    Sources and comparison assumptions

    Official supplier information checked on 23 October 2026. Power Apps uses the Dutch Premium price per user, billed yearly excluding VAT. Mendix figures are euro starting prices. Licensing rights, AI usage, capacity and quotes can differ. The assessment is APPSS’s interpretation, not an independent performance benchmark.

    The questions that shape your decision.

    When is APPSS a better fit than a low-code platform?

    When you want your own business application delivered and managed, with many potential participants and explicit business rules. You bring process knowledge; we deliver the agreed application on the existing server. Compare your actual process, integrations, frontend and operating needs.

    When does a low-code platform remain a good choice?

    When you already have a team and portfolio on Mendix or OutSystems, or Power Apps fits your Microsoft environment and licensing well. Specific components, existing investments and migration matter. Compare the full development, licensing and operating scope with the agreed APPSS delivery.

    Do €295 or €495 include unlimited development?

    These are server and service subscriptions. Business design and your frontend start at a one-time €3,500; connected processes at €7,500. Development, changes and SLA commitments are agreed separately. Web Chat SDK is an optional add-on for the server and platform offers; your AI-provider API costs are excluded.

    Do I need a database alongside APPSS?

    No separate application database for the data managed by your APPSS application. Storage is part of the APPSS service. Your existing ERP, accounting software or other source systems can retain their own databases.

    Am I tied to one hosting provider?

    APPSS offers a managed dedicated environment, managed APPSS in your chosen cloud and suitable infrastructure of your own. We agree compatibility, operations, access, data export and handover in advance. The application server remains APPSS; hosting choice does not remove that platform dependency.

    Room for everyone involved in the work

    Give your people access without another licensing decision.

    Let colleagues, customers and partners participate according to their permissions. Your business rules determine what they can do. With the fixed APPSS server subscription, each new team member does not become another licence charge.

    Compare your next application with APPSS.

    Bring one workflow and your current licence or development proposal. We will make the value of your APPSS server concrete, alongside the scope for setup, frontend, development and operations.