Comparison

Cool Ukiyo vs Big Clock

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

Head to head
About

Cool Ukiyo

Features
Read full description

This is a digital and analog clock with a background of famous Ukiyo-e prints. You can choose from 40 different Ukiyo-e works from various periods. The time, analog clock, and Ukiyo-e can be moved with a finger. The analog clock and Ukiyo-e can be zoomed in and out with two fingers. Seconds can also be displayed. The background color can be selected from 5 different colors. Touching the time character switches to setting mode. When in setting mode, you can change the year, month, and day of the week to various formats by touching. The year, month, day of the week, a.m./p.m., and seconds can be erased. You can also switch between 12-hour and 24-hour displays. Rotation of the screen in portrait and landscape mode is also supported. The size of the text can be adjusted in steps by pressing buttons such as "2X" and "3X". The time signal can be selected from 78 different tones.

About

Big Clock

Transform your device into a large, clear digital clock. Ideal for bedside tables, desks, or workouts, it offers an always-on display with customizable themes and brightness for easy readability in any environment.

Highlights
  • Fullscreen digital clock
  • Always-on display mode
  • Light and dark themes
  • Brightness control
  • Portrait and landscape support
  • Minimal design
Features
Read full description

Big Clock turns your iPhone or iPad into a clean, easy-to-read digital clock that stays visible when you need it most. Use it as a bedside night clock, desk clock, workout clock, or minimal always-on clock during work and study. Designed for simplicity, readability, and focus. FEATURES • Big fullscreen digital clock • Always-on display mode • Optional seconds display • Light and dark themes • Brightness control • Fullscreen mode • Works in portrait and landscape • One tap controls • Minimal and distraction-free design • Supports iPhone and iPad PERFECT FOR • Bedside nightstand clock • Desk setup clock • Kitchen clock • Study sessions • Work focus • Workout sessions • Low-light environments • Time visible from a distance Big Clock launches instantly and keeps the time clearly visible from across the room.

Screenshots

Cool Ukiyo4 screens
Big Clock4 screens

Verdict

The call

The clearest difference is ads: Big Clock at none against Cool Ukiyo's shown. Big Clock also leads on update cadence (weekly vs monthly). Cool Ukiyo's advantage is iOS requirement (12.0 vs 16.0). On price, 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. Cool Ukiyo sells 1 one-off in-app purchase and Big Clock sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Cool Ukiyo ships an update monthly, Big Clock weekly. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Cool Ukiyo versus Big Clock: the parameters behind the verdict, then further details
ParameterCool UkiyoBig Clock
PriceFreeFree
Rating—4.7 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyMonthlyWeekly — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size53 MB69 MB
Age rating4+4+
DeveloperMihoko ArakiNataliia Zarudna

In-app purchases

1 purchases

Cool Ukiyo

One-time1
  • Cool Ukiyo-e Clock with no ads$3.99
4 purchases

Big Clock

One-time4
  • Premium$1.99
  • Premium + Coffee$3.99
  • Premium + Coffee + Croissant$7.99
Show 1 more
  • Premium + Big Support$12.99

Questions

Is Cool Ukiyo free?
Cool Ukiyo is free to download, with in-app purchases available.
Is Big Clock free?
Big Clock is free to download, with in-app purchases available.
Do Cool Ukiyo or Big Clock have ads?
Cool Ukiyo shows ads; Big Clock does not.
Which is updated more often, Cool Ukiyo or Big Clock?
Cool Ukiyo ships an update monthly, and Big Clock weekly. Most recently, Cool Ukiyo was updated on October 13, 2026 and Big Clock on October 14, 2026.

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