Kaiken

Read your Japanese IC card with a tap.

Kaiken turns your phone into an instant balance and history reader for Suica, Pasmo and Icoca. No account, no fees, no data sent anywhere. Just tap and read.

Launching soon on Google Play and the App Store.

  • Private by design
  • Works offline
  • English and Japanese
9:41●●●

Welcome back

Your IC cards

PASMO

Pass and money

IC

Balance

¥1,240

Pasmo

···· 4017

ICOCA

IC operating card

IC

Balance

¥8,650

JR West

···· 7732

Suica

Super urban intelligent card

IC

Balance

¥4,820

JR East

···· 9281

Everything you need from an IC card reader.

Designed for travelers and residents who want a clean, no nonsense way to check their Suica, Pasmo or Icoca.

Instant NFC read

Hold your card flat against the back of your phone. Kaiken reads the balance in under a second.

Recent transactions

See your last rides and store purchases right after the tap. Useful for tracking spend in Japan.

Built for Japan

Suica, Pasmo and Icoca supported, including their regional variants used across the country.

Stays on your phone

No account, no servers, no analytics on your taps. Everything happens locally on your device.

9:41●●●

Welcome back

Your IC cards

PASMO

Pass and money

IC

Balance

¥1,240

Pasmo

···· 4017

ICOCA

IC operating card

IC

Balance

¥8,650

JR West

···· 7732

Suica

Super urban intelligent card

IC

Balance

¥4,820

JR East

···· 9281

How it works

Three taps from open to balance. No setup, no top up screens, no sign in.

  1. 01

    Open Kaiken

    Launch the app and tap the scan button. Your phone is ready in a second.

  2. 02

    Tap your card

    Hold your Suica, Pasmo or Icoca flat against the top back of your phone.

  3. 03

    See your balance

    Balance and recent transactions appear instantly. Switch between linked cards anytime.

Supported cards

Kaiken reads the IC family used across Japan, from Tokyo to Osaka and beyond.

Suica

Super urban intelligent card

IC

Balance

¥4,820

JR East

···· 9281

Suica

PASMO

Pass and money

IC

Balance

¥1,240

Pasmo

···· 4017

Pasmo

ICOCA

IC operating card

IC

Balance

¥8,650

JR West

···· 7732

Icoca

Frequently asked questions

Does Kaiken work without internet?

Yes. Reading your card uses your phone's built in NFC, so it works offline.

Do I need to create an account?

No. There is no sign in. Your card data never leaves your phone.

Which phones are supported?

Any modern Android phone with NFC and recent iPhones with NFC reading enabled.

Is Kaiken free?

Yes. Kaiken is free thanks to our partners listed in the app.

Ready when you land in Japan.

Be the first to know when Kaiken launches. Available soon on Google Play and the App Store.