Ka.app pairs a non-custodial crypto card with Bitcoin Lightning integration — one of the few cards where Lightning is a first-class feature. Available in EU with sats-back rewards. Best for Lightning enthusiasts wanting card-based spending.
What Ka.app offers
- Non-custodial spending model
- Bitcoin Lightning integration
- Sats-back rewards on purchases
- EU availability
- Simple mobile-first UX
Verdict
Ka.app is the Lightning-native crypto card. Small but genuinely differentiated for BTC/Lightning enthusiasts in EU.