Comparison

K1くんBIG vs Japan NFC Reader

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

Head to head

Check Japanese e-Money Balance

Free

🔧 Utilities

★ 5.024 ratingsView app →

About

K1くんBIG

Features

Read full description

K1-kun BIG is a handy terminal for restaurants. If you want to operate an actual order, please use it in conjunction with K1kun(for Windows App).

About

Japan NFC Reader

Easily check the balance and usage history of various Japanese transit and e-money cards directly on your iPhone. Supports a wide range of IC cards and payment services for convenient financial tracking.

Highlights

Check e-money balance
View usage history
Supports Transit IC cards
Supports Rakuten Edy, nanaco, WAON
Supports Hong Kong Octopus card
iPhone compatibility

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You can check Japanese e-money balance and usage history on your iPhone. Support: ・Transit IC（Suica, PASMO, ICOCA, SUGOCA, TOICA, Kitaca, manaca, nimoca, はやかけん(Hayakaken)）・IruCa ・PASPY ・SAPICA ・icsca ・OKICA ・Ryuto ・Region Affiliate Transit IC（totra, Iwate Green Pass, iGUCA, HACHICA, AOPASS, nolbé, Shuhoku Orange Pass, AkiCA, Towada SkyBlue Pass, cherica, MegoICa, …and more!）・Rakuten Edy ・nanaco ・WAON ・Japan Univ. Co-op IC Prepaid ・八達通 (Octopus) (Hong Kong) Devices that support card scanning: WITH iOS 13.0 OR LATER iPhone 14 Pro iPhone 14 Pro Max iPhone 14 iPhone 14 Plus iPhone SE (3rd generation) iPhone 13 Pro iPhone 13 Pro Max iPhone 13 iPhone 13 mini iPhone 12 Pro iPhone 12 Pro Max iPhone 12 iPhone 12 mini iPhone SE (2nd generation) iPhone 11 Pro iPhone 11 Pro Max iPhone 11 iPhone XS iPhone XS Max iPhone XR iPhone X iPhone 8 iPhone 8 Plus iPhone 7 (sold in Japan) iPhone 7 Plus (sold in Japan)

Screenshots

Japan NFC Reader3 screens

Verdict

The call

The clearest difference is in-app purchases: K1くんBIG at none against Japan NFC Reader's 2. K1くんBIG also leads on ads (none vs shown) and iOS requirement (10.0 vs 12.0). Japan NFC Reader's advantage is update cadence (every 6 days vs every 15 months) and device support (4 vs 1). On price 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. Japan NFC Reader sells 2 one-off in-app purchases. K1くんBIG asks for nothing beyond the download.

UpkeepUpdate frequency

K1くんBIG ships an update every 15 months, Japan NFC Reader every 6 days. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

Scorecard5 real differences · 5 level

K1くんBIG versus Japan NFC Reader: the parameters behind the verdict, then further details
Parameter	K1くんBIG	Japan NFC Reader
Price	Free	Free
Rating	—	5.0 (24 ratings) — better
Positive reviews	—	66.7% of reviews
Number of ratings	—	24 — better
Update frequency	Every 15 months	Every 6 days — better
Ads	No — better	Yes
In-app purchases	No — better	Yes
Monetization	—	Free with in-app purchases
Devices	iPad	iPhone, iPad, iPod, Apple Watch — better
Requires iOS	10.0 — better	12.0
Further details — not scored
Size	2 MB	48 MB
Age rating	4+	4+
Developer	株式会社アプリラボ	Ryoga Tanaka

In-app purchases

None

K1くんBIG

No in-app purchases

2 purchases

Japan NFC Reader

One-time2

Hide Ads (General)$1.99
Hide Ads (Advanced Features)$4.99

Questions

Is K1くんBIG free?

K1くんBIG is free to download, with no in-app purchases.

Is Japan NFC Reader free?

Japan NFC Reader is free to download, with in-app purchases available.

Do K1くんBIG or Japan NFC Reader have ads?

Japan NFC Reader shows ads; K1くんBIG does not.

Which is updated more often, K1くんBIG or Japan NFC Reader?

K1くんBIG ships an update every 15 months, and Japan NFC Reader every 6 days. Most recently, K1くんBIG was updated on October 13, 2026 and Japan NFC Reader on October 9, 2026.