CloudAhoy vs NASA TLX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CloudAhoy
This app provides pilots with detailed post-flight analysis and performance evaluations. It automatically segments flights, scores maneuvers, and offers various visual tools to identify areas for improvement. Get a comprehensive understanding of your flying proficiency shortly after landing.
- Automated flight segmentation
- Objective maneuver scoring
- 2D/3D flight visualization
- Chart and map overlays
- HUD cockpit view
- Flight data import
- Instrument approach comparison
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CloudAhoy provides post-flight data driven debriefs for pilots of all levels. Each flight is automatically analyzed and broken down into segments to easily evaluate pilot performance. Maneuver scoring provides a snapshot of how well you flew. Review airspeed, altitude, and wind corrections and relive your ground reference maneuvers or instrument approaches. Combine different views, chart overlays and detailed graphs to assist with identifying areas of improvement. Get a full picture of your performance and proficiency within minutes of landing. Download the app and enjoy CloudAhoy free for 35 days. USERS - General aviation pilots: weekend warriors, commercial & recreational pilots - Flight training: students and instructors - Flight schools - Professional pilots and corporate flight departments - Military CloudAhoy users fly all types of aircraft and simulators. Debrief VFR and IFR flights, training flights, cross country flights, and special missions such as search and rescue. FEATURES • Auto-segmentation and recognition of flight maneuvers • Objective maneuver scoring and evaluation • View flights in 2D or 3D, on the app or any computer platform • Overlay aviation charts, terrain maps, or satellite images • HUD cockpit view: relive your flight in 3D animation • Flight data import from many devices, apps, and EFIS • Glass cockpit gauges • Display the wind along your route. Check your wind corrections. • Optional synchronized video - view up to two feeds • IFR: Compare your instrument approaches vs. 3D or 2D published IAPs • Plot altitude, IAS, VS and other profiles of your approaches • In-flight mode for marking custom segments of the flight in real-time • Logbook-like listing of any flight you have flown with CloudAhoy • Use internal iPhone/iPad GPS, or an external GPS • Flight sharing between CloudAhoy pilots, and with people without an account • Supports iPad multitasking REVIEWS “It’s a fun way to replay your flights, but it also has real value for training and currency flights.” -Sportys iPad Pilot News “Always available, cost effective, and emotionally neutral technology that helps a CFI be more efficient.” -SAFE Pilots Blog “CloudAhoy is my debriefing tool of choice.” -Steve Thorne, FlightChops
NASA TLX
This app provides a digital tool for researchers to measure subjective workload across various industries. It utilizes a multi-dimensional rating procedure based on six sub-scales to derive an overall workload score. Designed for flexibility, it allows for mobile and contextual assessments, ensuring data privacy and offline usability.
- Subjective workload measurement
- Six sub-scale rating procedure
- Anonymized data collection
- Offline assessment capability
- QR code study setup
- Location flexibility
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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.
Screenshots
Verdict
CloudAhoy and NASA TLX both sit at 3.4 stars, but that hides the real split: 81% of CloudAhoy's written reviews are positive against 11% of NASA TLX's. CloudAhoy also leads on update cadence (every 5 weeks vs every 3 months) and ratings volume (35 vs 11). NASA TLX's advantage is in-app purchases (none vs 2) and iOS requirement (10.0 vs 15.0). On price, rating, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. CloudAhoy sells 2 one-off in-app purchases. NASA TLX asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 3.4 for CloudAhoy against 3.5 for NASA TLX. Both are backed by a comparable volume of ratings — 35 and 11 respectively. Written reviews are what separate them: 81% of CloudAhoy's written reviews are positive against 11% of NASA TLX's.
CloudAhoy ships an update every 5 weeks, NASA TLX every 3 months. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.
| Parameter | CloudAhoy | NASA TLX |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (35 ratings) | 3.5 (11 ratings) — better |
| Positive reviews | 80.8% of reviews — better | 11.1% of reviews |
| Number of ratings | 35 — better | 11 |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | CloudAhoy, Inc. | NASA |
Customer experience
CloudAhoy
NASA TLX
Bugs and requests
CloudAhoy
Reported bugs
17 issues- App glitching and failing to load
- iPad mini no longer plays back 3D
- Sharing feature not working as expected
- Display with layovers is jumbled
- App crashed
Show 12 moreShow fewer
- Won't record routes on iPad
- Server error during login
- Cannot get app to work on Mac
- Redirects to get Google Earth and plugin
- Support email not working
- Does not recognize internal GPS
- Logging stopped after 30 min with BadElf GPS
- Auto recording setup issue
- Google Earth not working right on iPad
- GPS signal issues in some apps
- Takeoff measured long, landing early
- Accuracy of recorded speeds not always 100%
Requested features
40 requests- Fix grading for CFI assistant
- Ensure scoring aligns with ACS standards
- Fix app glitches and loading failures
- Restore 3D playback on iPad mini
- Clarify subscription costs
Show 35 moreShow fewer
- Improve sharing feature
- Redesign display and layovers
- Simplify interface
- Improve 3D view functionality
- Integrate with ForeFlight for tracking
- Show course and altitude overlay on approach plates
- Add more background map options (ELAs, Sectionals)
- Allow adding airplane type for automatic info
- Integrate with iWatch to start flight
- Add in-app 3D playback from pilot's view
- More features working on iPhone
- Add WX superposition
- Allow reviewing flights within the app (not just browser)
- Improve UI for better clarity
- Add top-down plus side view
- Restore app to previous version's functionality
- Fix server errors for login/registration
- Improve Mac compatibility
- Fix support email
- Make app work on iPhone 5
- Ensure sufficient data for debrief on all devices
- Address excessive security requirements
- Fix password reset issues
- Ensure internal GPS is recognized
- Add auto-start option
- Improve GPS signal tracking
- Make Google Earth work correctly on iPad
- Fix auto-recording setup
- Provide directions for adding procedures to database
- Improve accuracy of measurements at low altitudes
- Optimize for glider use
- Ensure accurate recording of speeds
- Make it easier to remember to turn on the app
- Improve 2D GPS data capture
- Make it possible to add custom procedures
NASA TLX
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CloudAhoy
- CloudAhoy Standard$64.99
- CloudAhoy Pro$149.99
NASA TLX
No in-app purchases









