Comparison

Onboard Performance Tool vs E

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Onboard Performance Tool

This application enables flight crews and ground personnel to perform real-time performance calculations for flights. It provides fast and precise data for takeoff, landing, and weight and balance, accounting for various environmental and operational factors.

Highlights
  • Real-time performance calculations
  • Takeoff analysis
  • Landing analysis
  • Weight and balance information
  • Accounts for weather and runway conditions
  • Corrects for pressure variation and MEL items
Read full description

*** This application requires configuration files, performance and other databases, available separately. Contact your Boeing representative for details. *** The Onboard Performance Tool (OPT) permits flight crews and ground personnel to perform real-time calculations based on current weather and runway conditions, while adhering to company and regulatory policies and procedures. The Onboard Performance Tool provides self-planning capability through fast and precise calculations. It allows flight crews to calculate the takeoff analysis, landing analysis, and weight and balance information. Instant and accurate calculations save time by correcting for pressure variation, runway conditions, engine bleeds and Minimum Equipment List (MEL) items.

About

E

This learning management system app allows subscribers to access interactive online training courses and assessments with real-time simulation effects. It supports both online and offline modes and integrates with PC-based systems for data exchange.

Highlights
  • Interactive online courses
  • Real-time simulation effects
  • Offline course access
  • Online and offline assessments
  • PC LMS integration
Features
Read full description

E-PSAA-A321 App is an advanced learning management system application that will enable our subscribers to seamlessly undertake online training courses and assessments. The courses that the users will undertake are highly interactive and has real-time simulation effects. The E-PSAA-A321 App was developed by Navcon Aerospace to increase the accessibility of our Computer Based Training courses. Using the E-PSAA-A321 app the course reading and assessment can be undertaken either in the online mode or the offline mode. The E-PSAA-A321 App also integrates with the mainstream PC based Learning Management System for an exchange of course reading data and user settings.

Verdict

The call

The clearest difference is rating: Onboard Performance Tool at 3.5 against E's 1.0. Onboard Performance Tool also leads on ratings volume (17 vs 4). E's advantage is update cadence (monthly vs every 6 months) and iOS requirement (9.0 vs 17.6). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Onboard Performance Tool holds the better App Store score, 3.5 against 1.0. Both are backed by a comparable volume of ratings — 17 and 4 respectively.

UpkeepUpdate frequency

Onboard Performance Tool ships an update every 6 months, E monthly. The most recent releases landed on October 1, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 6 level
Onboard Performance Tool versus E: the parameters behind the verdict, then further details
ParameterOnboard Performance ToolE
PriceFreeFree
Rating3.5 (17 ratings) — better1.0 (4 ratings)
Positive reviews13.5% of reviews—
Number of ratings17 — better4
Update frequencyEvery 6 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPad
Requires iOS17.69.0 — better
Further details — not scored
Size42 MB424 MB
Age rating4+4+
DeveloperThe Boeing CompanyMohammed S AlHarbi

Customer experience

Onboard Performance Tool

All ratings18 ratings
Positive55.6%
Neutral5.6%
Negative38.9%
Written reviews37 reviews
Positive13.5%
Neutral8.1%
Negative78.4%

E

All ratings4 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Onboard Performance Tool

No in-app purchases

None

E

No in-app purchases

Questions

Is Onboard Performance Tool free?
Onboard Performance Tool is free to download, with no in-app purchases.
Is E free?
E is free to download, with no in-app purchases.
Which has better reviews, Onboard Performance Tool or E?
Onboard Performance Tool is rated higher. Onboard Performance Tool averages 3.5 out of 5 from 17 ratings, while E averages 1.0 from 4 ratings.
Do Onboard Performance Tool or E have ads?
Neither Onboard Performance Tool nor E shows ads.
Which is updated more often, Onboard Performance Tool or E?
Onboard Performance Tool ships an update every 6 months, and E monthly. Most recently, Onboard Performance Tool was updated on October 1, 2026 and E on September 24, 2026.

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