# Zulu Time vs CX

The clearest difference is price: Zulu Time at $0.99 against CX's $19.99. Zulu Time also leads on review sentiment (79% vs 36%) and rating (4.8 vs 3.7). CX's advantage is chart position (#128 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Zulu Time costs $0.99 and CX $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Zulu Time holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Zulu Time has 2.6K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 79% of Zulu Time's written reviews are positive against 36% of CX's.

Zulu Time ships an update every 3 months, CX every 8 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | Zulu Time | CX |
| --- | --- | --- |
| Price | **$0.99** | $19.99 |
| Rating | **[4.8 (2.6K ratings)](https://appshunter.io/ios/app/zulu-time/id377289826/reviews)** | [3.7 (11 ratings)](https://appshunter.io/ios/app/cx-3-flight-computer/id1645428895/reviews) |
| Number of ratings | **2.6K** | 11 |
| Positive reviews | **78.6% of reviews** | 35.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#128** |
| Size | 16 MB | 3 MB |
| Requires iOS | 17.6 | **17.2** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Derek Spears](https://appshunter.io/developer/377289829) | [ASA](https://appshunter.io/developer/334278379) |

## What reviewers say

### Zulu Time

[App page](https://appshunter.io/ios/app/zulu-time/id377289826)

This app displays local and UTC (Zulu) time, along with multiple time zones, on your iPhone, Apple Watch, and iPad. It offers widgets for quick access and features for calculating future or past times with offsets, simplifying timezone conversions for various professions.

**Highlights:** Display local and Zulu (UTC) time, Multiple time zone display, Home and Lock Screen widgets, Apple Watch complications, Future/past time offset calculations, Time zone conversion

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Zulu time on command
- 🔒 Robust security features
- 👍 Easy to read and use
- 👍 Excellent for aviation and radio operators
- 👍 Customizable and syncs correctly

**What reviewers complain about**

- 🐛 Watch complication not updating consistently
- 🐛 Local time not displaying correctly on widget
- 🐛 Complication shows only hours, not full time
- 🐛 Difficulty setting with Daylight Saving Time

**Reported bugs**

- Complication freezes after a few days
- Zulu time loses accuracy over time on Apple Watch
- Widget not updating local time properly

**Requested features**

- Add alarm feature
- Allow landscape mode for bedside clock view
- Provide option for always-on display
- Add time zone map for quick reference
- Show day of year in display


### CX

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

**Currently charting:** #128 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


## Frequently asked questions

### Is Zulu Time free?

Zulu Time costs $0.99, with no in-app purchases.

### Is CX free?

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

### Which has better reviews, Zulu Time or CX?

Zulu Time is rated higher. Zulu Time averages 4.8 out of 5 from 2.6K ratings, while CX averages 3.7 from 11 ratings.

### Do Zulu Time or CX have ads?

Neither Zulu Time nor CX shows ads.

### Which is updated more often, Zulu Time or CX?

Zulu Time ships an update every 3 months, and CX every 8 months. Most recently, Zulu Time was updated on October 26, 2026 and CX on October 26, 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.*