Comparison

Simple Clock JP vs Big Digital Clock

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

Head to head
About

Simple Clock JP

Features
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Simple Clock JP shows the current time in large, bold digits, easy to read at a glance from across the room or the stage. Just open the app and the clock is there. No setup, no complicated controls. Features - Large, easy-to-read time display - Shows hours, minutes, and seconds - Date and day of the week - Simple black background - The screen stays on while the clock is shown - On iPad, resize the window freely and place it next to your sheet music or set list app - Picture in Picture: float a compact clock over any other app - No ads, no account, no setup Use it as a desk clock, at work, at events, or on stage whenever you want to see the time in big numbers. A simple clock made for one thing: showing the time, big.

About

Big Digital Clock

Features
Read full description

Electronic Clock is a minimal full-screen digital clock — and a way to give the old phone in your drawer a second life. Plug an old phone or tablet into power, open Electronic Clock, and it becomes a big clock for your desk, nightstand or wall, with the local weather on screen too. Instead of letting an old device gather dust or end up as e-waste, put it back to work — and skip buying another clock. Time and weather at a glance: large hours and minutes fill the center of the screen, with seconds and a weather emoji right beside them, and the date, weekday and local temperature along the top. No unlocking, no opening other apps — one look tells you the time, the temperature and whether you need an umbrella. Ideas for an old device: • An old iPhone as a bedside clock, a retired iPad as a living room or kitchen clock • A spare phone on your office desk, in the entryway or at a shop counter • Second-hand phones, backup phones and hand-me-downs all find a use Features: • 12-hour or 24-hour clock that updates every second — set automatically for your region • Date and weekday at the top, with the weekday in English, Chinese or Japanese • Seconds and a weather emoji next to the time • Optional: uses your location to show the local temperature (°C or °F) and conditions • Weather data from MET Norway's public API — free, no ads • Choose the font, text size, text colour and background colour, or pick a built-in style preset • Celsius or Fahrenheit, matched to your region by default • App available in English, Traditional Chinese, Simplified Chinese and Japanese • Landscape full-screen layout on a black background by default; text scales to fit iPhone and iPad • Keeps the screen awake and hides the status bar for a clean display Optional Pro (one-time purchase, yours forever): • Custom colours for text and background • 5 extra fonts and 6 extra style presets • Flip clock animation Privacy: No account, no ads, no analytics, no developer servers. Location permission is optional; if granted, coordinates are rounded to about 1 km and sent only to MET Norway to look up the weather — never stored or tracked. See the privacy policy for details.

Screenshots

Simple Clock JP1 screens
Big Digital Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: Simple Clock JP at none against Big Digital Clock's 1. Big Digital Clock's advantage is update cadence (every 10 days vs every 4 weeks) and iOS requirement (15.0 vs 17.0). On price, ads 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. Big Digital Clock sells 1 one-off in-app purchase. Simple Clock JP asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Clock JP ships an update every 4 weeks, Big Digital Clock every 10 days. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 5 level
Simple Clock JP versus Big Digital Clock: the parameters behind the verdict, then further details
ParameterSimple Clock JPBig Digital Clock
PriceFreeFree
Rating—4.3 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 4 weeksEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size0 MB21 MB
Age rating4+4+
DeveloperKantaro KobayashiHank Wang

In-app purchases

None

Simple Clock JP

No in-app purchases

1 purchases

Big Digital Clock

One-time1
  • Pro Unlock$1.99

Questions

Is Simple Clock JP free?
Simple Clock JP is free to download, with no in-app purchases.
Is Big Digital Clock free?
Big Digital Clock is free to download, with in-app purchases available.
Do Simple Clock JP or Big Digital Clock have ads?
Neither Simple Clock JP nor Big Digital Clock shows ads.
Which is updated more often, Simple Clock JP or Big Digital Clock?
Simple Clock JP ships an update every 4 weeks, and Big Digital Clock every 10 days. Most recently, Simple Clock JP was updated on October 4, 2026 and Big Digital Clock on October 24, 2026.

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