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Unifi Apps

How to build Unifi Apps?​

This guide explains the required integration architecture and the sequential steps for deploying Unifi Apps across LINE and Web environments.

Please follow each step based on the specific platform or integration type you plan to support.

1. LINE Version Development — LIFF SDK Integration​

Unifi Apps can provide a LINE-based experience in two ways:

  • LINE MINI App
  • LINE Login LIFF

Both run inside the LINE mobile app and are implemented using the LIFF SDK, but they use different channel types and are onboarded through different tracks.

Key Differences​

Item
LINE MINI AppLINE Login LIFF
Channel
LINE MINI App Channel
LINE Login Channel
App Store policyCompliance with App Store policies
-
LIFF SDK UsageYes
Yes
Unifi Apps SDK Usage
  • Yes
  • WalletProvider
  • PaymentProvider (IAP)
  • Yes
  • WalletProvider
  • PaymentProvider (Crypto/Stripe Fiat)
note
  • Refer to LINE Integration documentation for detailed instructions.
  • LINE MINI App and LINE Login LIFF are technically implemented by first integrating the Unifi Apps SDK into a base Web service, and then adding the LIFF SDK on top of it. Therefore, the Web and Unifi Apps SDK environment is inherently included from a technical perspective.

2. Web Version Development​

Development of a web browser version for Non-LINE users is recommended.
To support the following features, the Unifi Apps SDK must be integrated into the web version:

  • WalletProvider
  • PaymentProvider (Crypto / Stripe Fiat)

3. Web3 Integration (WalletProvider)​

Unifi Apps SDK enables wallet features such as account creation and ownership verification.

VersionSupported Wallet Types
LINE MINI App
  • LINE (Liff)
  • OKX, Bitget Wallet
LINE Login LIFF
  • LINE (Liff)
  • OKX, Bitget Wallet
Web
  • Social Login (Web)
  • Kaia Wallet App/Extension, OKX, Bitget Wallet
note
Refer to Wallet Provider documentation for detailed instructions.

4. Payment Integration (PaymentProvider)​

To support monetization, all Unifi Apps must provide in-app item purchases.

Version
Supported Payment Methods
LINE MINI App
IAP payments
LINE Login LIFF
Crypto & Stripe (Fiat) payments
WebCrypto & Stripe (Fiat) payments
note

Refer to Payment Provider documentation for detailed instructions.

5. App Review — Quality & Compliance Check​

Submission and review providers vary by version:

VersionDemo Submission/Review Authority
LINE MINI App
  • LINE NEXT (Pre-review)
  • LY (Final approval)
  • Submission to LY is required after LINE NEXT review is completed
LINE Login LIFF
  • LINE NEXT
  • Submission via email
Web
  • LINE NEXT
  • Submission via email

6. Onboarding & Launch​

Version
Featured Placement
Exposure Area
Served Users
LINE MINI App
LINE App & Unifi
  • MINI Tab in LINE
  • Apps in Unifi
Japan LINE Users
LINE Login LIFF
Unifi
Apps in Unifi
Global LINE Users
WebUnifi
Apps in Unifi
Global Users

Additionally, if you register your information through a separate track, you may be featured on the Unifi and also sell NFTs.