Independent software company

OOS

OOS builds focused software for people who need clear, reliable tools.

Our first product is Rotorlog, a digital flight logbook made for helicopter pilots. More products may follow, but the goal stays the same: software that feels simple, dependable, and carefully made.

Products under OOS

Focused products, made to last

Each product solves one job well. Today that is Rotorlog. As more arrive, every product keeps its own identity and its own care.

Rotorlog app icon

Rotorlog

Available
Aviation

Rotorlog is a digital flight logbook for helicopter pilots. It helps pilots record flights, organize aircraft and crew details, track currency, and keep their flight history available across devices.

  • Flight records
  • Aircraft & crew
  • Currency tracking
  • Across devices
About

An independent software company

OOS is an independent software company based in the Netherlands. We build focused products for specific workflows, starting with aviation.

We prefer building a few things well over building large, generic platforms. Each product is meant to be reliable, clear, and quietly efficient for the people who depend on it.

Our first product is Rotorlog, a digital flight logbook for helicopter pilots. More may follow, with the same standard of care.