Comparison

Digital Clock Ultra vs TetraClock

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

Head to head
About

Digital Clock Ultra

Customize your device's clock with personalized backgrounds, calendar integration, and a year progress tracker. Enjoy a sleek, easy-to-navigate interface for a unique time-keeping experience.

Highlights
  • Customizable digital clock display
  • 12/24 hour format
  • Built-in calendar with date marking
  • Year progress percentage tracker
  • Personalized photo backgrounds
  • Sleek and modern UI
Read full description

Transform your clock with Digital Clock Ultra! Personalize with photos, calendar, year progress tracker, and sleek design. Download now! Digital Clock Ultra is an app that provides a comprehensive time-keeping experience for users. The app includes a digital clock display that can be set to either a 12-hour or 24-hour format. The clock is displayed in large, easy-to-read digits that can be seen from a distance. In addition to the clock, Digital Clock Ultra also includes a built-in calendar that shows the current month and marks today's date with a red dot. Plus Digital Clock Ultra show Year Progress. Year Progress is a feature in Digital Clock Ultra that displays the current year's progress as a percentage. The app calculates the number of days that have passed since January 1st and displays it as a percentage, giving users a visual representation of how much of the year has already elapsed. One of the unique features of Digital Clock Ultra is the ability to set your own photos as background images. Users can choose from their own photo library or use default image. The app automatically adjusts the photo to fit the screen and adds a transparent clock overlay on top. This feature allows users to personalize the app and make it truly their own. Digital Clock Ultra is designed with a sleek and modern user interface that is easy to navigate. All the features are easily accessible from the main screen, making it easy to switch between the clock, calendar, and settings. Overall, Digital Clock Ultra is a great app for anyone who wants a customizable clock and a basic calendar experience. With its digital clock display, built-in calendar, and the ability to set your own photos as background images, this app is perfect for keeping track of time and adding a personal touch to your device.

About

TetraClock

This clock app uses falling tetromino blocks to display the time. Customize colors, animations, and display formats. Note that the displayed time may have slight discrepancies due to animation effects.

Highlights
  • Tetromino block time display
  • Customizable colors and animations
  • 12/24-hour format
  • Seconds display toggle
  • Adjustable falling speed
  • Background color options
Features
Read full description

'TetraClock' is a clock app that represents the time by stacking seven types of single-sided tetromino-shaped blocks as they fall. The differences from the paid version are as follows: ・Contains ads ・No Watch App [How to Use] Tap the screen: Open the settings screen. Long press the screen: Stack the blocks again. [Main Features] - Switch between 12/24-hour display - Toggle seconds display ON/OFF - Monotone display - Fill in ON/OFF - Change outline color - Change transition animations - Change falling speed - Change background color [Notices] Due to the animation effect used for changing numbers, there may be a discrepancy between the displayed time and the actual time. Please do not use the displayed time as a basis for important decisions.

Screenshots

Digital Clock Ultra4 screens
TetraClock3 screens

Verdict

The call

The clearest difference is rating: Digital Clock Ultra at 4.8 against TetraClock's 3.7. Digital Clock Ultra also leads on ads (none vs shown) and monetization model (free vs ad-supported). TetraClock's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (14.0 vs 17.0). On price, ratings volume, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Digital Clock Ultra holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 8 and 3 respectively.

UpkeepUpdate frequency

Digital Clock Ultra ships an update every 3 weeks, TetraClock every 2 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Digital Clock Ultra versus TetraClock: the parameters behind the verdict, then further details
ParameterDigital Clock UltraTetraClock
PriceFreeFree
Rating4.8 (8 ratings) — better3.7 (3 ratings)
Positive reviews100.0% of reviews—
Number of ratings8 — better3
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size42 MB6 MB
Age rating4+4+
DeveloperSeungJun LeeLegal Prompt Inc.

In-app purchases

None

Digital Clock Ultra

No in-app purchases

None

TetraClock

No in-app purchases

Questions

Is Digital Clock Ultra free?
Digital Clock Ultra is free to download, with no in-app purchases.
Is TetraClock free?
TetraClock is free to download, with no in-app purchases.
Which has better reviews, Digital Clock Ultra or TetraClock?
Digital Clock Ultra is rated higher. Digital Clock Ultra averages 4.8 out of 5 from 8 ratings, while TetraClock averages 3.7 from 3 ratings.
Do Digital Clock Ultra or TetraClock have ads?
TetraClock shows ads; Digital Clock Ultra does not.
Which is updated more often, Digital Clock Ultra or TetraClock?
Digital Clock Ultra ships an update every 3 weeks, and TetraClock every 2 days. Most recently, Digital Clock Ultra was updated on November 3, 2026 and TetraClock on October 30, 2026.

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