What's New

- Requires iOS 10.0 or greater
- Added the ability to launch the NASA TLX app from other NASA research apps
- Minor iPad layout issue fixes

App Description

The Official NASA Task Load Index (TLX) App, widely regarded as the gold standard for measuring subjective workload across a wide range of industries, enables researchers to easily perform assessments on operators working with various human-machine interface systems.

By incorporating a multi-dimensional rating procedure, the NASA TLX derives an overall workload score based on a weighted average of ratings on six sub scales:

∙ Mental Demand
∙ Physical Demand
∙ Temporal Demand
∙ Performance
∙ Effort
∙ Frustration

Originally developed as a paper and pencil questionnaire by NASA Ames Research Center’s (ARC) Sandra Hart in the 1980s, the NASA TLX is the benchmark against which the efficacy of other measures, theories, or models are judged. The NASA TLX has been successfully used around the world to assess workload in various environments such as aircraft cockpits; command, control, and communication (C3) workstations; supervisory and process control; and simulations and laboratory tests.

The NASA TLX app for iOS dramatically increases the outreach and accessibility for the research and development community, and enables mobile and contextual assessments (e.g., in an airplane cockpit during/after flight, rather than at a desktop computer in a lab). It offers several key features that benefits both researchers and participants:

Privacy
The NASA TLX has been designed to ensure the privacy of research participant data. The NASA TLX anonymizes all results and does not send any personal identifiable information (PII) to any data servers.

Location Flexibility
The NASA TLX app can be used anywhere, even without a network connection, so researchers can have participants complete a NASA TLX evaluation in the field, outside the confines of a desktop office environment. The NASA TLX results are calculated on the device, and, once a network connection is available, collected data can be securely uploaded to servers for analysis. This frees researchers from being burdened by the task of tracking individual paper forms.

Simple Study Setup
Researchers can set up studies quickly and reduce typing on the NASA TLX app by scanning a pre-generated QR code from within the app, which automatically populates the study name, subject ID, and trial number in the app.

iPhone Screenshots

(click to enlarge)

NASA TLX screenshot 1 NASA TLX screenshot 2 NASA TLX screenshot 3 NASA TLX screenshot 4

iPad Screenshots

(click to enlarge)

NASA TLX screenshot 5 NASA TLX screenshot 6 NASA TLX screenshot 7 NASA TLX screenshot 8

App Changes

  • February 16, 2017 Initial release
  • June 13, 2019 New version 1.0.3

Other Apps From NASA

NASA NASA Lunar Electric Rover Simulator NASA Space Weather NASA Television NASA Visualization Explorer AstroApp: Space Shuttle Crew NASA HIAD Space Place Prime Space Communications and Navigation: NetworKing iMorpheus Ascent: Commemorating Shuttle Sector 33 EAServices NASA Technology Innovation 16.2 SSC Site Status ISSLive Space365 AstroApp: Space Station Crew NASA Science Mission Highlights NASA Science: A Journey of Discovery NASA Desert RATS Virtual Test Site Rescue 406 NASA Technology Innovation 16.1 Space Junk Sammy Images Of Change NASA Earth As Art Spinoff 2012 Rocket Science 101 30 Years Shuttlebook NASA OIG Mobile NASA Flywheel NASA Glenn Research Center: The Early Years LSP Activity Book What’s Up at Wallops NASA Spinoff Space Station Research Xplorer NASA 3DV NASA Technology Innovation 16.3 GLOBE Data Entry Sector 33 Classroom Edition Asteroid Redirect Mission NASA Technology Innovation Hazards and Population Mapper GLOBE Observer NASA Patent Portfolio LaRC Alerts NASA OSBP Mobile Space Science Investigations: Plant Growth NASA Mars Cardboard Experience DISCS - Drought Information Fine Motor Skills (FMS) NASA Inspire ISS Explorer NASA Science: Humans in Space Aeronautics AR Rocket Science: Ride 2 Station iSHORT NASA NeMO-Net NASA PVT+ To the Moon and Beyond NASA SAFE ICESat-2 WeatherSats AR The JWST Augmented Reality App NASA's First Woman Spot the Station 3,2,1 Launch!