Comparison

RS vs CX

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

Head to head
About

RS

Create, edit, and manage waypoints and flight plans on a map. Instantly set destinations and import/export data from GPX and FPL files. Save and load your flight data for future use.

Highlights
  • Waypoint creation and editing
  • Flight plan creation and editing
  • Direct-to destination setting
  • GPX/FPL file import
  • Save and load flight data
Features
Read full description

[Function overview] ・Waypoint You can create waypoints on the map and edit their name, type, location, and so on. ・Flight plan You can create and edit flight plans by linking waypoints on the map. ・Direct To You can instantly send any waypoint or location on the map to the transceiver as a destination with only a few taps. ・Import You can import waypoints or flight plans from GPX and FPL files. ・Save / Load You can save and load waypoint and flight plan data for various purposes. [Compatible transceivers] IC-A25N/IC-A25NE Note: - The RS-AERO1I may not work with all iPhones or iPads. - The RS-AERO1I may not work, depending on the OS version or other installed application. - Bluetooth LE is used for the connection to the transceiver, so it may take time to complete data transfer. - Transferring data while talking through the transceiver may cause data transfer failure. - You need an Internet connection to use some functions.

About

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.

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
Currently charting
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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.

Screenshots

RS4 screens
CX4 screens

Verdict

The call

The clearest difference is price: RS at Free against CX's $19.99. RS also leads on iOS requirement (13.0 vs 17.2). CX's advantage is rating (3.7 vs 1.5) and review sentiment (36% vs 4%). On ratings volume, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

RS is free to download; CX costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

CX holds the better App Store score, 3.7 against 1.5. Both are backed by a comparable volume of ratings — 19 and 11 respectively. Written reviews point the same way: 4% of RS's written reviews are positive against 36% of CX's.

UpkeepUpdate frequency

RS ships an update every 34 months, CX every 8 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

Scorecard7 real differences · 4 level
RS versus CX: the parameters behind the verdict, then further details
ParameterRSCX
PriceFree — better$19.99
Rating1.5 (19 ratings)3.7 (11 ratings) — better
Positive reviews3.8% of reviews35.7% of reviews — better
Number of ratings19 — better11
Update frequencyEvery 34 monthsEvery 8 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank—#43 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.2
Further details — not scored
Size14 MB3 MB
Age rating4+4+
DeveloperICOM INCORPORATEDASA

Customer experience

RS

All ratings19 ratings
Positive10.5%
Neutral0.0%
Negative89.5%
Written reviews26 reviews
Positive3.8%
Neutral7.7%
Negative88.5%

CX

All ratings11 ratings
Positive63.6%
Neutral9.1%
Negative27.3%
Written reviews14 reviews
Positive35.7%
Neutral7.1%
Negative57.1%

In-app purchases

None

RS

No in-app purchases

None

CX

No in-app purchases

Questions

Is RS free?
RS is free to download, with no in-app purchases.
Is CX free?
CX costs $19.99, with no in-app purchases.
Which has better reviews, RS or CX?
CX is rated higher. RS averages 1.5 out of 5 from 19 ratings, while CX averages 3.7 from 11 ratings.
Do RS or CX have ads?
Neither RS nor CX shows ads.
Which is updated more often, RS or CX?
RS ships an update every 34 months, and CX every 8 months. Most recently, RS was updated on November 2, 2026 and CX on November 7, 2026.

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