Comparison

坂道シリアル番号入力支援 vs 郵便番号さがし

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

Head to head

Offline Japan zip & address

Free

🔧 Utilities

No ratingsView app →

About

坂道シリアル番号入力支援

Features

Read full description

For Serial Numbers Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

郵便番号さがし

Features

Read full description

Fast Japanese postal code (yubin bango) search, offline. Look up an address from a zip code or a zip code from an address. Furigana readings, postage rate table, big-text display, favorites and categories. Note: unofficial app; uses Japan Post's public postal code data.

Screenshots

坂道シリアル番号入力支援4 screens

郵便番号さがし4 screens

Verdict

The call

The clearest difference is ads: 坂道シリアル番号入力支援 at none against 郵便番号さがし's shown. 郵便番号さがし's advantage is update cadence (fortnightly vs monthly). On price, in-app purchases, 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. 坂道シリアル番号入力支援 sells 1 in-app purchase, starting at $0.29 per 7 days and 郵便番号さがし sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

坂道シリアル番号入力支援 ships an update monthly, 郵便番号さがし fortnightly. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 4 level

坂道シリアル番号入力支援 versus 郵便番号さがし: the parameters behind the verdict, then further details
Parameter	坂道シリアル番号入力支援	郵便番号さがし
Price	Free	Free
Update frequency	Monthly	Fortnightly — better
Ads	No — better	Yes
In-app purchases	Yes	Yes
Devices	iPhone, iPad — better	iPhone
Requires iOS	17.0	16.0 — better
Further details — not scored
Size	1 MB	23 MB
Age rating	4+	4+
Developer	FLUFF	YU KORIKI

In-app purchases

1 purchases

坂道シリアル番号入力支援

Subscriptions1

プレミアムプラン$0.297 Days

1 purchases

郵便番号さがし

One-time1

広告を非表示にする$1.99

Questions

Is 坂道シリアル番号入力支援 free?

坂道シリアル番号入力支援 is free to download, with in-app purchases available.

Is 郵便番号さがし free?

郵便番号さがし is free to download, with in-app purchases available.

Do 坂道シリアル番号入力支援 or 郵便番号さがし have ads?

郵便番号さがし shows ads; 坂道シリアル番号入力支援 does not.

Which is updated more often, 坂道シリアル番号入力支援 or 郵便番号さがし?

坂道シリアル番号入力支援 ships an update monthly, and 郵便番号さがし fortnightly. Most recently, 坂道シリアル番号入力支援 was updated on October 25, 2026 and 郵便番号さがし on October 29, 2026.