Comparison

マイナンバーカード読み取り練習アプリ 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

マイナンバーカード読み取り練習アプリ

Features
Read full description

本人確認などでマイナンバーカードをスマホで読み取る機会が増えています。それを練習するアプリです。パスワードの入力は不要です。 追加機能として、あと何回パスワード入力を試すことができるかを表示することができます。 また、カード読み取りにかかった時間を表示するのでカード読み取り性能を簡易的に確認できます。

About

Big Digital Clock

Transform an old phone or tablet into a large, always-on digital clock with local weather. Displays time, date, temperature, and weather conditions at a glance, ideal for desks or nightstands. Offers customization options for fonts, colors, and display styles.

Highlights
  • Full-screen digital clock display
  • Local weather conditions and temperature
  • Customizable fonts, text size, and colors
  • 12-hour or 24-hour format
  • Keeps screen awake
  • Landscape full-screen layout
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

マイナンバーカード読み取り練習アプリ2 screens
Big Digital Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: マイナンバーカード読み取り練習アプリ at none against Big Digital Clock's 1. マイナンバーカード読み取り練習アプリ also leads on iOS requirement (13.0 vs 15.0). Big Digital Clock's advantage is update cadence (every 10 days vs every 5 months). 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. マイナンバーカード読み取り練習アプリ asks for nothing beyond the download.

UpkeepUpdate frequency

マイナンバーカード読み取り練習アプリ ships an update every 5 months, Big Digital Clock every 10 days. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 6 level
マイナンバーカード読み取り練習アプリ versus Big Digital Clock: the parameters behind the verdict, then further details
Parameterマイナンバーカード読み取り練習アプリBig Digital Clock
PriceFreeFree
Rating—4.6 (5 ratings) — better
Number of ratings—5 — better
Update frequencyEvery 5 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.0
Further details — not scored
Size22 MB21 MB
Age rating4+4+
DeveloperHideki KariyaHank Wang

In-app purchases

None

マイナンバーカード読み取り練習アプリ

No in-app purchases

1 purchases

Big Digital Clock

One-time1
  • Pro Unlock$1.99

Questions

Is マイナンバーカード読み取り練習アプリ free?
マイナンバーカード読み取り練習アプリ 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 マイナンバーカード読み取り練習アプリ or Big Digital Clock have ads?
Neither マイナンバーカード読み取り練習アプリ nor Big Digital Clock shows ads.
Which is updated more often, マイナンバーカード読み取り練習アプリ or Big Digital Clock?
マイナンバーカード読み取り練習アプリ ships an update every 5 months, and Big Digital Clock every 10 days. Most recently, マイナンバーカード読み取り練習アプリ was updated on October 27, 2026 and Big Digital Clock on October 29, 2026.

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