Comparison

UTC Complications vs CX

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

Head to head
About

UTC Complications

This app offers customizable digital time complications for Coordinated Universal Time (UTC) on Apple Watch. It's ideal for aviators and developers needing a quick reference for server logs. Complications update every minute and can be configured with various display options.

Highlights
  • Customizable UTC time complications
  • Updates every minute
  • 24-hour ISO 8601 format by default
  • Supports 12-hour time
  • Customizable time labels (UTC, GMT, Z, Zulu)
  • Color customization for watch faces
Features
Read full description

UTC Complications for Apple Watch provides customizable, digital time complications for Coordinated Universal Time (UTC). A great quick reference for aviators and software developers looking at server logs. If this app doesn't show up on your Watch after purchase, open the App Store on your Watch, scroll to the bottom, choose Account → Purchased, and download from there. Complications are provided for every available Apple Watch complication slot and update every minute with the current UTC time. By default, complications are presented in 24-hour ISO 8601 time. You can set many options including: • Using your device's region settings • Using 12-hour time • Using "UTC", "GMT", "Z", "Zulu", or "±00:00" to label UTC time • Customizing colors on supported watch faces

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
Read full description

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

CX4 screens

Verdict

The call

The clearest difference is price: UTC Complications at $0.99 against CX's $19.99. UTC Complications also leads on iOS requirement (13.0 vs 17.2). CX's advantage is rating (3.7 vs 3.0) and chart position (#52 vs unranked). On review sentiment, ratings volume, update cadence and ads 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

UTC Complications costs $0.99 and CX $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 3.0. Both are backed by a comparable volume of ratings — 14 and 11 respectively. Written reviews point the same way: 33% of UTC Complications's written reviews are positive against 36% of CX's.

UpkeepUpdate frequency

UTC Complications ships an update every 7 months, CX every 8 months. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 7 level
UTC Complications versus CX: the parameters behind the verdict, then further details
ParameterUTC ComplicationsCX
Price$0.99 — better$19.99
Rating3.0 (14 ratings)3.7 (11 ratings) — better
Positive reviews33.3% of reviews35.7% of reviews — better
Number of ratings14 — better11
Update frequencyEvery 7 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank—#52 — better
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPad
Requires iOS13.0 — better17.2
Further details — not scored
Size1 MB3 MB
Age rating4+4+
DeveloperProfessionally Ridiculous LLCASA

Customer experience

UTC Complications

All ratings14 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews6 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

CX

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

In-app purchases

None

UTC Complications

No in-app purchases

None

CX

No in-app purchases

Questions

Is UTC Complications free?
UTC Complications costs $0.99, with no in-app purchases.
Is CX free?
CX costs $19.99, with no in-app purchases.
Which has better reviews, UTC Complications or CX?
CX is rated higher. UTC Complications averages 3.0 out of 5 from 14 ratings, while CX averages 3.7 from 11 ratings.
Do UTC Complications or CX have ads?
Neither UTC Complications nor CX shows ads.
Which is updated more often, UTC Complications or CX?
UTC Complications ships an update every 7 months, and CX every 8 months. Most recently, UTC Complications was updated on November 3, 2026 and CX on November 10, 2026.

Other comparisons