日本通信アプリ vs Lazy Ledger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
日本通信アプリ
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日本通信アプリは、日本通信SIMのお申込みや、マイぺージでのご契約情報の確認・変更などをご利用いただける公式アプリです。 本アプリでは、マイナンバーカードによる本人確認後、FPoSに基づく電子証明書を発行し、認証を行います。 これにより、マイページへのログインを厳格に認証することができます。 また、日本通信SIMのお申込み時にも、お客様を認証する手段としてご利用いただけます。 主な特徴: ◆ 日本通信SIMのお申込み ◆ FPoSに基づく電子証明書を利用したログインおよびお申込み時の本人確認 ◆ マイぺージでのご契約情報の確認・変更 詳しくは、日本通信SIMのウェブサイトをご確認ください。
Lazy Ledger
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Started a budget and gave up after three days? Lazy Ledger is built for that. When a credit or debit card purchase alert arrives, Lazy Ledger reads the amount and merchant and records it for you. You don't have to do a thing. ■ Pay, and it's already recorded ・Amount, merchant, and card are recorded from card purchase alerts ・Duplicate alerts for the same purchase are merged into one ・Refunds and cancellations offset the original purchase ■ Every day's spending at a glance ・A calendar shows how much you spent each day. Darker means more ・Days you didn't spend anything get a leaf ・Tap a day to see its purchases ■ No bank login. Your data stays on your iPhone ・Never share your card login or password ・Just add a shortcut and choose which apps' alerts to read ・Your spending data is never sent to a server ■ Works with any card alert ・For a new alert format, tap the amount and merchant once to create a rule ・Alerts in the same format are recorded automatically after that ■ Know where it all goes ・Switch between categories, merchants, and cards ・Monthly budget, what's left, and a daily allowance ・Month-by-month trend chart ■ Also ・Hide merchant names and amounts when sharing screenshots ・Backup and CSV export * Uses Shortcuts automations triggered by notifications, available in iOS 27.
Screenshots
Verdict
The clearest difference is ads: 日本通信アプリ at none against Lazy Ledger's shown. 日本通信アプリ also leads on iOS requirement (15.0 vs 27.0). Lazy Ledger's advantage is update cadence (weekly vs fortnightly). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
日本通信アプリ ships an update fortnightly, Lazy Ledger weekly. The most recent releases landed on November 3, 2026 and October 29, 2026 respectively.
| Parameter | 日本通信アプリ | Lazy Ledger |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 12.8% of reviews | — |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 27.0 |
| Further details — not scored | ||
| Size | 55 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Japan Communications Inc. | Takeshi Nakahara |
In-app purchases
日本通信アプリ
No in-app purchases
Lazy Ledger
No in-app purchases
Questions
Is 日本通信アプリ free?
Is Lazy Ledger free?
Do 日本通信アプリ or Lazy Ledger have ads?
Which is updated more often, 日本通信アプリ or Lazy Ledger?
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