# CX vs E6B Aviation Calculator

The clearest difference is price: E6B Aviation Calculator at Free against CX's $19.99. E6B Aviation Calculator also leads on review sentiment (78% vs 36%) and rating (4.3 vs 3.7). CX's advantage is in-app purchases (none vs 4) and chart position (#109 vs unranked). On ads, device support and iOS requirement there is nothing between them.

E6B Aviation Calculator is free to download; CX costs $19.99 up front. E6B Aviation Calculator sells 4 in-app purchases, starting at $2.99 per month. CX asks for nothing beyond the download.

E6B Aviation Calculator holds the better App Store score, 4.3 against 3.7. Both are backed by a comparable volume of ratings — 11 and 41 respectively. Written reviews point the same way: 36% of CX's written reviews are positive against 78% of E6B Aviation Calculator's.

CX ships an update every 8 months, E6B Aviation Calculator every 3 weeks. The most recent releases landed on November 8, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | CX | E6B Aviation Calculator |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | [3.7 (11 ratings)](https://appshunter.io/ios/app/cx-3-flight-computer/id1645428895/reviews) | **[4.3 (41 ratings)](https://appshunter.io/ios/app/e6b-aviation-calculator-flt9/id6475892430/reviews)** |
| Number of ratings | 11 | **41** |
| Positive reviews | 35.7% of reviews | **78.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#109** | — |
| Size | 3 MB | 10 MB |
| Requires iOS | 17.2 | **17** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ASA](https://appshunter.io/developer/334278379) | [Raj Jeshang](https://appshunter.io/developer/1725358290) |

## What reviewers say

### CX

[App page](https://appshunter.io/ios/app/cx-3-flight-computer/id1645428895)

**Currently charting:** #109 Top Paid · Utilities (US App Store)

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.

**Highlights:** 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

**In-app purchases:** none


### E6B Aviation Calculator

[App page](https://appshunter.io/ios/app/e6b-aviation-calculator-flt9/id6475892430)

This app provides a comprehensive suite of aviation calculators, including E6B functions, ascent/descent planning, fuel calculations, and weight & balance. It supports various unit conversions and offers customizable default units for international users.

**Highlights:** E6B flight calculations, Ascent and descent planner, Fuel and weight/balance calculator, Holding pattern calculations, Performance data interpolation, Extensive unit conversions, Customizable default units

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $2.99 | per month |
| Full Access | $2.99 | per month |
| Full Access | $6.99 | per year |
| Lifetime Full Access | $8.99 | one-time |


## Frequently asked questions

### Is CX free?

CX costs $19.99, with no in-app purchases.

### Is E6B Aviation Calculator free?

E6B Aviation Calculator is free to download, with in-app purchases available.

### Which has better reviews, CX or E6B Aviation Calculator?

E6B Aviation Calculator is rated higher. CX averages 3.7 out of 5 from 11 ratings, while E6B Aviation Calculator averages 4.3 from 41 ratings.

### Do CX or E6B Aviation Calculator have ads?

Neither CX nor E6B Aviation Calculator shows ads.

### Which is updated more often, CX or E6B Aviation Calculator?

CX ships an update every 8 months, and E6B Aviation Calculator every 3 weeks. Most recently, CX was updated on November 8, 2026 and E6B Aviation Calculator on November 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*