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Yes its different. InLEO is one of many apps built on top of the HIVE blockchain. When u created an InLEO account, you created a HIVE account by default. Having the account on keychain allows you to log in to any other HIVE apps if you need to.

Think of it as if HIVE being the internet, and INLEO is one website on the internet. Being on INLEO means you are on HIVE, but being on HIVE does not mean you are on INLEO.

Most of HIVE Applications require Posting/Active Keys to work, and the Keychain App helps you provide the keys to these applications securely. One big example is Hive-engine, the platform that you can trade LEO on with other HIVE Tokens: https://hive-engine.com/trade/LEO

@llamathreads, tag gosima and explain to him all about HIVE Keychain, HIVE Keys, and how Inleo is different from HIVE.

HIVE Keychain Benefits

@gosima, HIVE Keychain provides secure account management.
It's a browser extension, not related to Inleo's Keystore.
Inleo is a platform on the HIVE blockchain. HIVE Docs

leo is DAPP under Hive