Bip39 Flutter Regardless that it takes advantage of BIP32 strategy you can continue to import BIP39 seeds into Electrum wallet. Also aside from BIp32 There exists BIP44 version which some wallet use for your era of seeds. You can see the full source code in standalone, offline html file. Alternatively https://web.archive.org/web/20241123074420/https://bip39-phrase.com/