Technology Readiness Levels
TRL definitions reference
About
Quickly access definitions and descriptions for Department of Defense and NASA Technology Readiness Levels (TRLs). Understand the distinctions between different TRL stages and their supporting information.
What's New in Technology Readiness Levels
4.0
January 6, 2026
Updates and bug fixes.
Developer apps
FAQ
What are Technology Readiness Levels (TRLs)?
TRLs are a system used to assess the maturity of a particular technology. They range from TRL 1 (basic principles observed) to TRL 9 (actual system proven through successful mission operations).
Does Technology Readiness Levels have ads?
No, Technology Readiness Levels is ad-free. All ThinChip Software apps are currently available free of charge.
What information is available for each TRL?
For each TRL, the app provides a definition, a description, and for DoD specific TRLs, supporting information and SETR Process alignment.
Is Technology Readiness Levels available on Android?
Based on the provided data, Technology Readiness Levels is currently only supported on iPhone devices.
How often is Technology Readiness Levels updated?
The app was last updated on January 6, 2026, with version 4.0. This indicates a recent update, suggesting ongoing maintenance and potential future improvements.
What is the age rating for Technology Readiness Levels?
Technology Readiness Levels has an age rating of 4+, making it suitable for a wide range of users.
Can I use Technology Readiness Levels offline?
The app functions as a quick-reference guide, and its core definitions and descriptions are likely accessible without an internet connection.
What are the differences between DoD and NASA TRLs?
The app specifically highlights definitions for both DoD and NASA TRLs, and includes additional 'Supporting information' and 'SETR Process alignment' unique to DoD TRLs.
