Comparison

uWorld vs Moon Clock

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

Head to head
About

uWorld

Easily track time across different global regions with this intuitive utility. It automatically converts times to your local zone and allows quick calendar entries, with a convenient notification center widget for instant access.

Highlights
  • Global time zone tracking
  • Automatic time conversion
  • Calendar event integration
  • Notification center widget
  • Simple user interface
Features
Read full description

uWorld is a simple, easy-to-use app for checking the time around the world. You can search for the time and date of different areas in the globe and have a quick look by scrolling down the notification center. The app automatically converts the time in different regions to your local time, which resolved the confusion of multiple time zones. It also supported a quick entry of adding to Calendar for your convenience. KEY FEATURES: 1. Simple, easy-to-use, neat user interface. 2. Multiple time zones, all in one hand. 3. Convert the time and add to your calendar. 4. Check the date and time easier using the widget in the notification center. If you have any questions or advice, please contact us via email: bluepi0j@gmail.com

About

Moon Clock

Features
Read full description

Moon Clock is a full-screen clock with Moon phase widgets. Check the time, and take a moment to look at today’s Moon. A Moon for your Home Screen Choose a small, medium, or large widget and put it where you’ll see it often. Check the time and lunar phase without opening the app. See the Moon in full screen Open Moon Clock to give the Moon and time room to fill your screen. The phase and lighting change with time, and you can choose an observing location to see the Moon from there. Find a look you like Keep the natural lunar surface, or try pixel, halftone, and CRT effects. Mix fonts, text effects, and Moon styles, then arrange your full-screen clock. Your widgets can follow your chosen fonts and Moon effects, so there’s no need to set them up again. Take a closer look The 3D Moon is built from real lunar imagery and elevation data. Zoom in to explore craters, ridges, and the shadows they cast. Rotate the Moon freely to see the far side, hidden from view on Earth. Free features and Moon Clock Pro The basic clock and widgets with the default look are free. Moon Clock Pro is a one-time purchase with a permanent unlock. No subscription. It includes: • Every font, text effect, and Moon style • Creating and saving your own text styles and freeform layouts • Zooming in on the lunar surface and viewing the Moon from any angle Unlocked fonts and Moon effects are also available in widgets, with no separate purchase. No account or sign-in is required. Location access is optional; you can choose an observing location manually.

Screenshots

uWorld4 screens
Moon Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: uWorld at none against Moon Clock's 1. uWorld also leads on device support (3 vs 1) and iOS requirement (11.0 vs 18.0). On price, 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

Both are free to download. Moon Clock sells 1 one-off in-app purchase. uWorld asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 5 level
uWorld versus Moon Clock: the parameters behind the verdict, then further details
ParameteruWorldMoon Clock
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better18.0
Further details — not scored
Size69 MB78 MB
Age rating4+4+
Developer浩安 王YI-WEN CHOU

In-app purchases

None

uWorld

No in-app purchases

1 purchases

Moon Clock

One-time1
  • Moon Clock Pro$5.99

Questions

Is uWorld free?
uWorld is free to download, with no in-app purchases.
Is Moon Clock free?
Moon Clock is free to download, with in-app purchases available.
Do uWorld or Moon Clock have ads?
Neither uWorld nor Moon Clock shows ads.
Which is updated more often, uWorld or Moon Clock?
uWorld ships an update every 6 weeks, and Moon Clock every 6 weeks. Most recently, uWorld was updated on November 1, 2026 and Moon Clock on October 24, 2026.

Other comparisons