Simplifier vs. Neptune

From SAP Apps to Productive Enterprise Processes

For many SAP teams, Neptune is a well-established way to implement SAP-integrated applications and mobile apps. However, when the focus is not just on individual apps but on productive, auditable, and cross-system enterprise processes, more is needed than just app development.

Simplifier offers a platform for applications, workflows, integrations, and AI agents—all running in a shared, governance-enabled runtime.

The Real Question

Which platform helps your company operate applications and processes securely, seamlessly, and responsibly over the long term?

After all, in an enterprise context, value doesn’t end with the initial go-live. What matters afterward includes: authorizations and role models, monitoring and traceability, SAP and non-SAP integration, lifecycle management, upgrade reliability, “clean core” capability, operation within existing IT landscapes, and extensibility for workflows and business AI.

You can build it—until the first day of production. That’s when our value begins.

Neptune

Strong for SAP-related applications

Neptune is typically a good fit when companies want to implement SAP-compatible user interfaces, mobile applications, or existing SAP-oriented app scenarios.

Neptune can be a valuable component of a digital transformation strategy, especially in SAP-centric environments.

Simplifier

Apps as Part of a Productive Operating Model

  • Enterprise Application Development
  • Workflow and Process Execution
  • SAP Integration and Side-by-Side Extensions
  • Clean-Core Strategies
  • Governance, Roles, and Permissions
  • Monitoring, Testing, and Deployment
  • Business AI and Agent-Based Process Support
  • Operation in on-premises, hybrid, or cloud scenarios

The difference lies in the runtime

App development is only part of the story

Building an application is no longer the biggest challenge these days. Low-code, pro-code, and AI-powered development make the process faster. The bigger challenge arises during operation:

  • Who is allowed to do what?
  • Which systems are covered?
  • Which process steps are traceable?
  • How are errors detected and analyzed?
  • How are changes propagated?
  • How can the solution remain upgrade-proof?
  • How are critical decisions audited?
  • How are AI agents integrated in a controlled manner?

Production has become cheap—but accountability has not.

The Simplifier Runtime integrates applications, workflows, business objects, connectors, roles, monitoring, and deployment into a single operational framework. This results not only in an app, but in a productive enterprise system.

Comparison

Simplifier vs. Neptune: An Overview

Topic Neptune Simplifier
Primary Focus SAP-related apps and mobile applications Apps, workflows, integrations, and AI agents in a single enterprise runtime
SAP Expertise Strong in SAP-oriented scenarios Strong in SAP and cross-system processes
Process Execution App-Centric Focus Workflow and Process Execution as a Core Component
Governance Depending on the specific setup Roles, permissions, monitoring, testing, deployment, and runtime governance
Clean Core May be relevant in SAP modernization scenarios Side-by-Side Extensions and Offloading of Custom Logic from the SAP Core
AI Support Depending on the specific scenario Build AI, Business AI, and agent-based process support within the platform
Migration Project-dependent Migration from Neptune scenarios to Simplifier can be supported via Miri
Target Vision SAP App Enablement Governed Enterprise Process Execution

When Simplifier Is the Better Choice

Four Key Scenarios

1. More than Just SAP Apps

Many processes do not end in SAP. They run on SAP ECC or S/4HANA, non-SAP systems, legacy applications, databases, machines and Shopfloor systems, Microsoft 365, mobile devices, and external portals.

Simplifier is relevant when these systems are not only connected but are also to be executed as part of a controlled process.

2. Clean Core is strategically important

S/4HANA transformations are forcing companies to reevaluate custom code and extensions. Simplifier supports the idea of running extensions alongside the SAP core rather than creating new dependencies within the core.

This is particularly relevant for companies that continue to run ECC or S/4HANA on-premises, want to implement Clean Core principles, and need to restructure existing Z-Code or ABAP logic.

3. Apps, Workflows, and AI Together

AI is transforming the way applications are built. But in an enterprise context, it’s not enough for AI to simply generate code. Simplifier makes a clear distinction:

Build AI builds the system. Business AI is part of the system.

The runtime ensures that execution, permissions, monitoring, and governance remain under control. AI interprets; the workflow executes.

4. Migration, Not Just a Rewrite

Many companies have existing Neptune applications that are valuable from a business perspective but need to be reassessed from a strategic standpoint: preparation for S/4HANA, Clean Core initiatives, platform consolidation, and modernization of the user interface and process logic.

Simplifier can serve not only as a target platform here, but also as a modernization path: Existing Neptune scenarios can be analyzed, structured, and migrated to a Simplifier target architecture.

What Makes Simplifier Special

A platform for apps, processes, and agents

Platform Capabilities

  • Low-Code Application Development
  • SAPUI5- and Fiori-based UIs
  • Workflow Designer and Runtime
  • Business Objects for Server-Side Logic

Governance and Operations

  • Role and Permission Models
  • Monitoring and Logging
  • Transport and Deployment Mechanisms
  • SAP, REST, SQL, and OData integrations

AI and Extensibility

  • Build AI and Business AI
  • Agentic AI for Enterprise Processes
  • On-premises, hybrid, or cloud
  • SAP-compatible, but not limited to SAP

Use Cases

Typical Use Cases

SAP Clean Core Extensions

Modernize customer-specific extensions as side-by-side applications without placing an unnecessary burden on the SAP core.

Neptune App Modernization

Migrate existing Neptune applications to a platform that runs apps, workflows, integrations, and AI agents together.

Mobile Enterprise Apps

Create mobile applications for warehousing, maintenance, service, and production—integrated with SAP and other systems.

Workflow-Based Process Automation

Integrate the UI, business logic, approvals, escalations, and SAP transactions into a controlled process.

Business AI in Processes

Use AI wherever interpretation is needed—documents, free-form text, classification, or exceptions—and let workflows handle the auditable execution.

Frequently asked questions

Not necessarily. Simplifier isn’t just “Neptune with a different name.” Simplifier is a platform for apps, workflows, integrations, and AI agents. If your focus is exclusively on SAP-related apps, Neptune may still be a good fit. If you’re looking for a more comprehensive operating model for enterprise processes, Simplifier is the more strategic option.

Yes, Neptune scenarios can generally be considered candidates for modernization and migration. It is important to analyze the specific application: UI, backend logic, SAP accesses, integrations, role model, and operational requirements.

No. Simplifier is closely integrated with SAP, but it is not limited to SAP. The platform is particularly useful when processes need to be orchestrated across SAP and non-SAP systems.

No. Simplifier can be used in various operating models. This is particularly relevant for companies with existing on-premises or hybrid SAP environments. At the same time, Simplifier can also be integrated with SAP BTP-related scenarios.

The biggest difference lies in the vision: Neptune is often viewed as a tool for SAP-related app development. Simplifier, on the other hand, also addresses the production operation of enterprise applications, workflows, integrations, and AI agents within a governance-enabled runtime.

Because productive enterprise processes don’t just have to work. They must be controllable, traceable, maintainable, and secure to operate. This is exactly where Simplifier’s long-term value lies.

Try out Simplifier.

Let's work together to determine which existing apps, processes, and extensions are suitable for modernization with Simplifier.