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Senior IT consultancy · Belgium

Practical engineering for complex systems

APEXone helps design, build, and improve software, infrastructure, integrations, and energy platforms across Belgium and Europe.

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APEXpulse battery monitoring app screenshot
APEXspark household energy dashboard screenshot
Animated Fish Tank Timer iOS app screenshot

About

From architecture to working systems

APEXone bv is a Belgian senior-level IT consultancy and product builder. We work where architecture, implementation, and operations meet: software, infrastructure, integrations, automation, and energy systems that need to behave reliably outside the diagram.

  • Design the technical direction.
  • Build the software and integrations.
  • Analyse, fix, operate, and improve the system.

Products

Product thinking, engineering depth

Focused products built around connected devices, energy, clarity, and practical day-to-day use.

iOS · Modbus TCP

APEXpulse

Real-time battery monitoring for iOS, built around live telemetry, direct Modbus TCP communication, and reliable visibility into battery behaviour.

Focus
Live battery state, measurements, and operational signals.
Designed for
Fast checks, technical diagnosis, and dependable monitoring.
APEXpulse battery monitoring app screenshot
In development

APEXspark

A Home Assistant integration for intelligent household energy orchestration, coordinating consumption, storage, and automation for real household energy control.

Connects
Home Assistant, household loads, storage, and automation rules.
Goal
Turn energy signals into calm, predictable control decisions.
APEXspark household energy dashboard screenshot
iOS · Calm timing

Fish Tank Timer

A simple iOS timer app for calm, clarity, and accessibility, made for people with Autism or ADHD who benefit from a clear visual sense of remaining time.

Experience
Readable, low-noise timing without unnecessary controls.
Use
Daily routines, focus moments, breaks, transitions, and tasks.
Fish Tank Timer iOS app screenshot
Animated Fish Tank Timer iOS app preview

Services

Design, fix, improve, integrate

Consultancy and hands-on engineering for teams that need senior technical judgement and implementation capacity.

  • IT consultancy and architecture for practical delivery.
  • Freelance software development for robust applications and tools.
  • Systems administration and infrastructure support for reliable operations.
  • API and system integrations that connect existing platforms cleanly.
  • Automation and Home Assistant solutions for connected environments.
  • Technical troubleshooting and system analysis when behaviour is unclear.

Contact

Discuss a system, integration, product, or fix

Available for consultancy, freelance engineering, product collaboration, automation work, and focused technical analysis.

Email APEXone
APEXone bv Langerheide 14, 3150 Haacht, Belgium website@apexone.be