Kinglet Coming to the App Store

Support

Questions about Kinglet Wallet? Write to us and a person will answer, usually within a few working days.

Email

support@kingletwallet.com

Write to us

We will never ask for your seed words, your private keys or remote access to your devices. Anyone who does is not us.

Common questions

What do I need to use Kinglet?

An iPhone with iOS 26 or later, an air-gapped signer that signs with unified sighash (0x21) over animated QR codes (UR), and your own Electrum server for Bitcoin XBT, such as Fulcrum or electrs. You can try the demo wallet without any of them.

Which signers work?

Air-gapped signers that sign with unified sighash (0x21) and exchange transactions as animated QR codes (UR). SeedSigner with unified sighash support is tested end to end. Kinglet reads signed transactions as UR only, not BBQr, files or USB. Check that the signer shows "Unified sighash (0x21)" before you approve.

Does Kinglet support multisig?

Not yet. For now, Kinglet supports single-signature wallets: P2PKH, P2SH-P2WPKH, P2WPKH and P2TR. You can add several wallets.

Why did Kinglet refuse to send my transaction?

At least one signature was standard (0x01) instead of unified (0x21). It would be valid on the BLAKE2b chain, but the same transaction could be replayed on the SHA256 chain. Sign again and make sure your signer supports unified sighash.

Which server should I use?

Your own Electrum server running on a BLAKE2b node. For example:

  • StartOS: Knots BLAKE2b and Fulcrum BLAKE2b, installed by sideloading.
  • Umbrel: the Knots app, plus Electrs (BLAKE2b) from a community app store, reached over Tor.
  • Your own machine: Bitcoin Knots with BLAKE2b (29.4.1 or later, not pruned) and Fulcrum BLAKE2b.

Kinglet needs a secure connection (ssl://) or a .onion address over Tor with a Tor app such as Orbot. It remembers the server's certificate and stops if it ever changes, and it checks that the server follows the BLAKE2b chain. The community keeps a list of node packages.

Can I use Kinglet without running my own server?

Kinglet has no built-in server, by design. You need an Electrum server for the BLAKE2b chain: your own, or one run by someone you trust. Whoever runs it can see your addresses and balance. To look around first, try the demo wallet.

I lost my phone. Are my coins gone?

No. Kinglet never holds your keys, so nothing on the phone can spend your coins. Install Kinglet on a new phone and import the wallet again from your signer.

How do I remove a wallet?

Open the wallet, go to Settings and choose Remove wallet. This deletes the wallet description and its history from the phone. Deleting the app does the same. We have no copy.

Does Kinglet collect any data?

No. There is no account, no analytics and no tracking. See the privacy policy.