CX vs Airro E6B
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CX
This aviation tool simplifies flight planning for pilots. It offers accurate calculations for time, speed, distance, fuel, and more, along with unit conversions and a built-in calculator. Designed for ease of use, it guides users through flight planning and execution with a natural menu flow.
- Flight planning calculations
- Time, speed, distance functions
- Fuel and altitude calculations
- Unit conversions (12 categories)
- Weight and balance calculations
- Holding pattern details
- Built-in calculator, clock, timer
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Based on the ASA CX-3® Flight Computer for pilots, this CX-3 app makes flight planning simple by taking confusion out of the equation. Fast, versatile and easy to use, the CX-3® delivers accurate results quickly and efficiently. Whether used for flight planning, ground school, or FAA Knowledge Exam preparation, the menu organization reflects the order in which a flight is normally planned and executed, resulting in a natural flow from one function to the next with a minimum of keystrokes. Multiple aviation functions can be performed on the CX-3® flight computer including those related to time, speed, distance, heading, wind, fuel, altitude, cloud base, standard atmosphere, glide, climb & descent, weight & balance, as well as a holding pattern function to help determine entry method and holding details. The CX-3® has 12 unit-conversions: Distance, Speed, Duration, Temperature, Pressure, Volume, Rate, Weight, Rate of Climb/Descent, Angle of Climb/Descent, Torque, and Angle. These 12 conversion categories contain 38 different conversion factors for over 100 functions. A calculator, clock, timer, and stopwatch are also built in along with multiple settings for lighting, backlighting, themes, time zones and more.
Airro E6B
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Small helpful tool to make aviation related calculations and conversions easy. Current functions: - Conversions: distance, mass, speed, temperature and volume - Calculations: cloud base, cross wind, isa deviation, pressure, ROD, TOC and glide path - Fuel uplift - Stopwatch We will try to continuously improve and update the application with new features.
Screenshots
Verdict
The clearest difference is price: Airro E6B at $1.99 against CX's $19.99. CX's advantage is update cadence (every 8 months vs every 40 months) and chart position (#83 vs unranked). On ads, in-app purchases, device support and iOS requirement 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
CX costs $19.99 and Airro E6B $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CX ships an update every 8 months, Airro E6B every 40 months. The most recent releases landed on November 10, 2026 and October 30, 2026 respectively.
| Parameter | CX | Airro E6B |
|---|---|---|
| Price | $19.99 | $1.99 — better |
| Rating | 3.7 (11 ratings) — better | — |
| Positive reviews | 35.7% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 8 months — better | Every 40 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #83 — better | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.2 | 16.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | ASA | Christian van der Meij |
In-app purchases
CX
No in-app purchases
Airro E6B
No in-app purchases









