---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "NASA TLX"
developer_entity: "NASA"
bundle_id: "gov.nasa.arc.th.NASA-TLX.dist"
app_store_id: "1168110608"
category: "Productivity"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: true
market_region: "US"
platforms: "iOS"
app_last_updated: "2018-09-18"
report_date: "2026-04-03"
report_version: "1.0.3"
total_reviews: 11
overall_rating: 3.55
confidence: "low"
confidence_score: 0.1
data_age_days: 0
intelligence_version: 2
total_followers: 0
nemesis: "NASA TLX (Université Laval)"
competitor_count: 16
tags: ["productivity", "free", "mobile app", "app review", "app analysis", "researchers,", "human-factors", "engineers,"]
canonical_url: "https://marlvel.ai/intel-report/productivity/nasa-tlx"
license: "CC-BY-NC 4.0"
---

# NASA TLX App Audit

> **TL;DR:** NASA TLX is a productivity app by NASA, rated 3.55/5 by 11 users, available on iOS.
>
> **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence.

> **Key Insight:** NASA TLX is a productivity app by NASA.

## Metadata & Market Performance
- **Publisher:** NASA
- **Category:** Productivity
- **Target Audience:** Researchers, human-factors engineers, and developers who need to perform standardized subjective workload assessments in field or laboratory environments.
- **Platforms:** iOS
- **Version Audited:** 1.0.3
- **Audit Date:** 2026-04-03
- **Signal Count:** 0 reviews analyzed
- **Confidence:** Low (0.1/1.0)
- **App Store ID (iOS):** 1168110608
- **Bundle ID:** gov.nasa.arc.th.NASA-TLX.dist
- **Data Window:** Analysis based on signals collected up to 2026-04-03

## Strategic Synopsis
NASA TLX is the official mobile implementation of the gold-standard Task Load Index, used globally to measure subjective workload across industries like aviation and healthcare. Developed by NASA Ames Research Center, it digitizes a multi-dimensional rating procedure to assess mental, physical, and temporal demands. It is positioned as a free, high-authority research tool for human factors engineers and academic researchers.

## Feature Profile & User Intent
- **[Differentiator] NASA-Validated Workload Assessment:** Standardized multi-dimensional rating procedure based on six sub-scales: Mental, Physical, Temporal Demand, Performance, Effort, and Frustration.
  * *User Intent:* Users seek enhanced value through premium features.
- **[Differentiator] Offline Data Collection:** Allows researchers to conduct evaluations in the field without a network connection, with data stored locally on the device.
  * *User Intent:* Users want uninterrupted access without internet dependency.
- **[Differentiator] QR Code Study Setup:** Rapid configuration of study parameters (study name, subject ID, trial number) via QR code scanning to reduce manual data entry.
- **[Standard] Data Privacy & Anonymization:** Ensures participant privacy by anonymizing results and avoiding the transmission of personally identifiable information (PII).
  * *User Intent:* Users prioritize data protection and trust in the platform.
- **[Standard] Secure Data Upload:** Enables secure transfer of locally collected data to servers for analysis once a network connection is established.
  * *User Intent:* Users prioritize data protection and trust in the platform.

## Monetization Strategy
- **Model:** Free
- **Tiers:** Completely free to use with no mentioned in-app purchases or subscription tiers.
- **Analysis:** The app is positioned as a public service/research tool provided by NASA, prioritizing accessibility and scientific standardization over monetization.

## SWOT Analysis

| **Strengths** | **Weaknesses** |
| :--- | :--- |
| • Official NASA branding and scientific authority<br>• Validated multi-dimensional rating methodology<br>• Robust offline functionality for field research<br>• QR-based study configuration to reduce errors | • Lack of updates since 2018 (technical debt)<br>• iOS-only availability limits market reach<br>• Limited data visualization within the app<br>• Niche focus on a single psychometric index |

| **Opportunities** | **Threats** |
| :--- | :--- |
| • Expansion to Android to capture global research teams<br>• Direct API integrations with major research platforms like Qualtrics<br>• Modernization of UI to improve participant completion rates<br>• Adding real-time data syncing for collaborative studies | • Academic rivals (U Laval, U Queensland) offering more updated apps<br>• General survey platforms absorbing the TLX use case via templates<br>• Emerging agile research tools (Maze, Sprig) automating workload metrics<br>• OS updates potentially breaking the legacy 2018 codebase |

## Competitive Landscape (AI-Analyzed)

> Competitive positioning identified by AI analysis of app features, category, and market signals.

### Nemesis (Closest Rival)
- **NASA TLX (Université Laval)** by Université Laval: A direct academic implementation of the NASA Task Load Index used by researchers to collect the same six-scale workload data.
- **TLX - Task Load Index** by The University of Queensland: A direct rival providing the standardized NASA-validated workload assessment for human factors research.
- **iTLX** by Human Factors Research Group: A dedicated mobile tool specifically designed to replicate the NASA TLX paper-and-pencil questionnaire for digital data collection.

### Contenders (Strong Competitors)
| App | Developer | Why They Compete |
| :--- | :--- | :--- |
| Qualtrics XM | Qualtrics | The industry standard for professional research; researchers often build custom TLX surveys here for better data integration. |
| SurveyMonkey | Momentive Inc. | A widely used alternative for field data collection that allows researchers to digitize psychometric scales like the TLX. |
| dscout | dscout, Inc. | Competes on 'location flexibility' by enabling contextual, mobile-first qualitative and quantitative research in the field. |
| Lookback | Lookback | Focuses on mobile contextual assessments and participant observation, overlapping with NASA TLX’s use in operational environments. |
| UserTesting | UserTesting | A major platform for measuring user effort and performance, often used as a broader alternative to specific workload indices. |

### Same Space (Related Apps)
- **NLE Calc** by CDC/NIOSH: The government-standard tool for physical workload assessment (Lifting Equation), serving the same human-factors engineering audience.
- **ErgoCalc** by Ergo-Plus: Provides specialized ergonomic and workload calculations for industrial engineers and safety researchers.
- **RULA REBA Assessment** by Ergo-Plus: Focuses on physical demand and postural workload, an adjacent sub-scale to the NASA TLX's physical demand metric.
- **Typeform** by Typeform: Used by researchers for high-engagement mobile data collection with a focus on user experience and ease of use.
- **[Google Drive](https://marlvel.ai/intel-report/productivity/google-drive)** by Google: Often used as the default repository for field research data and manual entry of workload scores in the absence of specialized apps.

### New Kids on the Block (Emerging Competitors)
- **Maze** by Maze Design: A rapidly growing platform for agile research that automates the collection of usability and workload metrics.
- **Sprig** by Sprig: Offers real-time, in-context research insights that challenge traditional post-task workload assessments like the TLX.
- **PlaybookUX** by PlaybookUX: A modern competitor in the UX research space focusing on streamlining participant management and data analysis.

## Bottom Line
NASA TLX is a divisive productivity app that is completely free.
With a 3.55/5 rating from 11 reviews, it receives mixed feedback.

**Best for:** Researchers, human-factors engineers, and developers who need to perform standardized subjective workload assessments in field or laboratory environments.

## Frequently Asked Questions

**Q: Is NASA TLX free?**
A: Yes, NASA TLX is completely free to download and use.

**Q: What are NASA TLX's main features?**
A: Key features include NASA-Validated Workload Assessment, Offline Data Collection, QR Code Study Setup, Data Privacy & Anonymization, Secure Data Upload.

**Q: Who is NASA TLX for?**
A: Researchers, human-factors engineers, and developers who need to perform standardized subjective workload assessments in field or laboratory environments.

**Q: Is NASA TLX available on iOS and Android?**
A: NASA TLX is available on iOS.

**Q: Is NASA TLX worth it in 2026?**
A: NASA TLX is a divisive productivity app that is completely free. With a 3.55/5 rating from 11 reviews, it receives mixed feedback. Best for: Researchers, human-factors engineers, and developers who need to perform standardized subjective workload assessments in field or laboratory environments..

**Q: What are the main competitors of NASA TLX?**
A: The main competitors of NASA TLX include NASA TLX (Université Laval), TLX - Task Load Index, iTLX, Qualtrics XM, SurveyMonkey, among others. NASA TLX (Université Laval) is the closest direct competitor — a direct academic implementation of the nasa task load index used by researchers to collect the same six-scale workload data..

**Q: What are the best alternatives to NASA TLX?**
A: Top alternatives to NASA TLX include NASA TLX (Université Laval), TLX - Task Load Index, iTLX, Qualtrics XM. Each targets a similar audience in the productivity space.

## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 3.55/5 |
| Total Reviews | 11 |
| Confidence | Low |
| Pricing Model | Free |
| Platforms | iOS |
| Key Features | 5 analyzed |

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **NASA TLX** (this app) | 3.55/5 | N/A | NASA |
| [Mitsu: AI Life Coach](https://marlvel.ai/intel-report/productivity/mitsu-ai-life-coach) | N/A/5 | Mixed | C2 Insights |
| [Pattrn - Discipline Tracker](https://marlvel.ai/intel-report/productivity/pattrn-discipline-tracker) | 4.8/5 | Excited | Pedro Schott |
| [ChatGPT](https://marlvel.ai/intel-report/productivity/chatgpt) | 4.8/5 | Excited | OpenAI OpCo, LLC |
| [Park Smarter](https://marlvel.ai/intel-report/productivity/com-ipsgroupinc-parksmarter) | 3.2/5 | Upset | IPS Group Inc |
| [Wispr Flow: AI Voice Keyboard](https://marlvel.ai/intel-report/productivity/wispr-flow-ai-voice-keyboard) | 4.2/5 | Excited | Wispr AI, Inc. |

## Company Profile
- **Developer:** NASA
- **Website:** [https://humansystems.arc.nasa.gov/groups/tlx/index.php](https://humansystems.arc.nasa.gov/groups/tlx/index.php)

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/nasa-tlx/id1168110608?uo=4)
- **Dev Site:** [Official Website](https://humansystems.arc.nasa.gov/groups/tlx/index.php)
- **Sources:** App store metadata.

## Related Intel Reports
- [*Mitsu: AI Life Coach*](https://marlvel.ai/intel-report/productivity/mitsu-ai-life-coach) (C2 Insights) — N/A Rating | Mixed Sentiment
- [*Pattrn - Discipline Tracker*](https://marlvel.ai/intel-report/productivity/pattrn-discipline-tracker) (Pedro Schott) — 4.8/5 Rating | Positive Sentiment
- [*ChatGPT*](https://marlvel.ai/intel-report/productivity/chatgpt) (OpenAI OpCo, LLC) — 4.8/5 Rating | Positive Sentiment
- [*Park Smarter*](https://marlvel.ai/intel-report/productivity/com-ipsgroupinc-parksmarter) (IPS Group Inc) — 3.2/5 Rating | Terrible Sentiment
- [*Wispr Flow: AI Voice Keyboard*](https://marlvel.ai/intel-report/productivity/wispr-flow-ai-voice-keyboard) (Wispr AI, Inc.) — 4.2/5 Rating | Positive Sentiment
- [*Turbo VPN Private Browser*](https://marlvel.ai/intel-report/productivity/com-allconnected-turbovpn) (INNOVATIVE CONNECTING PTE.LIMITED) — 4.7/5 Rating | N/A Sentiment
- [*ChatAI - AI Chatbot Assistant*](https://marlvel.ai/intel-report/productivity/chatai-ai-chatbot-assistant) (Braly) — 4.8/5 Rating | N/A Sentiment
- [*Opal: Screen Time Control*](https://marlvel.ai/intel-report/productivity/com-withopal-opal) (Opal OS) — 4.5/5 Rating | Mixed Sentiment
- [*Translator GO: AI Translate*](https://marlvel.ai/intel-report/productivity/mobile-app-tools-translator) (MATdev) — 4.4/5 Rating | N/A Sentiment
- [*Google Keep - Notes and lists*](https://marlvel.ai/intel-report/productivity/com-google-keep) (Google) — 4.6/5 Rating | Excellent Sentiment

## Methodology

This report was generated by Marlvel.ai's 3-stage AI intelligence pipeline:

1. **Feature & Positioning Extraction** — Analyzes app metadata, developer website content, and version history to identify key features, target audience, and competitive positioning.
2. **Sentiment Analysis** — Processes user reviews (minimum 5 reviews required) to extract praise themes, complaint themes, and overall sentiment with evidence quotes.
3. **Intelligence Synthesis** — Combines stages 1 & 2 with App Store rankings to produce SWOT analysis, executive summary, and actionable insights.

- **Confidence Score:** 0.1/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 0
- **Data Sources:** App Store metadata
- **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform
- **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence.
- **Report Age:** 0 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/productivity/nasa-tlx)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.