Comparison

Zulu Time vs USDC

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

Head to head
About

Zulu Time

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
Currently charting
Read full description

An iPhone, Apple Watch and iPad app to see Local and Zulu time (GMT) or multiple time zones in a single glance. Includes Widgets for both the iPhone and Apple Watch. Useful for pilots in getting weather briefings and filing flight plans, or Ham radio operators to do timezone conversions. No more worrying about getting the timezone offset correct or Daylight Savings Time conversions. Easily convert from different time zones, including times in the future or past. On the iPhone: - Home and Lock Screen widgets - The Zulu Time page gives a quick view of both Zulu and Local times - The Offset Time page allows you to see Zulu and local time either in the future or past by entering an offset via the Offset button. Tapping either Zulu or Local times will allow you to enter a time in the future or past, synchronizing both Local and Zulu times with that offset. The offset only applies to this view (except on the iPad the offset applies to everything on the page) - The Multiple Zones page allows you to add as many time zones as you wish in a scrolling view. Clicking on any Time Zone will allow you to change it. on iPad: All information is combined on one screen. You have user customizable time zones on the right hand side. On the left, you have Zulu and Local time and one customizable time zone. The offset to see future or past time can be done via the Offset button or tapping any of either the Zulu, Local or Custom time buttons on the left. On the Watch: Complications available in all watch faces making for glanceable ZuluTime and access to the app, which gives offset able time computation.

About

USDC

Features
Read full description

Tired of chasing emails, WhatsApp threads, or messy photo uploads? Our app makes contractor approvals simple and organized. • Manager View: Create sub-accounts for each contractor, review their submissions, and approve or reject with one tap. • Contractor View: Log in, upload photos or videos of work, add annotations, and instantly track approval status. • Seamless Workflow: All submissions are centralized, making project reviews faster and more transparent. • Clear Communication: Contractors know exactly what’s approved or needs revisions. Managers save time by keeping everything in one app. Whether it’s construction, creative work, or field inspections — this app helps you focus on the work, not the paperwork. Take control of approvals today!

Screenshots

Zulu Time4 screens
USDC4 screens

Verdict

The call

The clearest difference is price: USDC at Free against Zulu Time's $0.99. USDC also leads on iOS requirement (13.0 vs 17.6). Zulu Time's advantage is chart position (#158 vs unranked). On 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

USDC is free to download; Zulu Time costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 8 level
Zulu Time versus USDC: the parameters behind the verdict, then further details
ParameterZulu TimeUSDC
Price$0.99Free — better
Rating4.8 (2.6K ratings) — better—
Positive reviews78.6% of reviews—
Number of ratings2.6K — better—
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank#158 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.613.0 — better
Further details — not scored
Size16 MB59 MB
Age rating4+17+
DeveloperDerek SpearsUSDSC

Bugs and requests

Zulu Time

Reported bugs

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

Requested features

5 requests
  • 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

USDC

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Zulu Time

No in-app purchases

None

USDC

No in-app purchases

Questions

Is Zulu Time free?
Zulu Time costs $0.99, with no in-app purchases.
Is USDC free?
USDC is free to download, with no in-app purchases.
Do Zulu Time or USDC have ads?
Neither Zulu Time nor USDC shows ads.

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