Comparison

TetraClock vs Pixel Clock

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

Head to head
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.

About

Pixel Clock

Features
Read full description

Make time a little more playful with Pixel Clock - Grid, a landscape pixel clock for your desk, nightstand or wall. NEW: CYBER CITY Watch the time on a giant billboard in a living neon city, with flying traffic, rain, glowing windows and a cozy window view with a sill you can play with. Turn on Music Visualizer and the city pulses to the sound around you. Cyber City is a premium face: try it free for 24 hours, then unlock it forever with a one-time purchase. No subscription. CLASSIC (FREE) Animated pixel digits with customizable colors, backgrounds and themes, a moving RGB border, falling-digit transitions, heart balloons when you shake, and a weekday indicator. DUAL TIME (FREE) See a second time zone side by side, adjust its offset, and enjoy shatter-and-restore effects and a seconds progress bar. MAKE IT YOURS 12/24-hour time, seconds, date, weekday and battery display, in 13 languages. Works on iPhone and iPad. The microphone is used only for Music Visualizer. Sound is analyzed on your device and never recorded.

Screenshots

TetraClock3 screens
Pixel Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: TetraClock at none against Pixel Clock's 2. TetraClock also leads on update cadence (every 2 days vs weekly). Pixel Clock's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Pixel Clock sells 2 one-off in-app purchases. TetraClock asks for nothing beyond the download.

UpkeepUpdate frequency

TetraClock ships an update every 2 days, Pixel Clock weekly. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 6 level
TetraClock versus Pixel Clock: the parameters behind the verdict, then further details
ParameterTetraClockPixel Clock
PriceFreeFree
Rating3.7 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 2 days — betterWeekly
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size6 MB100 MB
Age rating4+4+
DeveloperLegal Prompt Inc.YIMING SHI

In-app purchases

None

TetraClock

No in-app purchases

2 purchases

Pixel Clock

One-time2
  • Cyber City 1-day TrialFree
  • Cyber City – Unlock Forever$2.99

Questions

Is TetraClock free?
TetraClock is free to download, with no in-app purchases.
Is Pixel Clock free?
Pixel Clock is free to download, with in-app purchases available.
Do TetraClock or Pixel Clock have ads?
TetraClock shows ads; Pixel Clock does not.
Which is updated more often, TetraClock or Pixel Clock?
TetraClock ships an update every 2 days, and Pixel Clock weekly. Most recently, TetraClock was updated on October 30, 2026 and Pixel Clock on November 4, 2026.

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