As a physical object the Titan is convincing. One-piece metal construction, no USB data port, no Bluetooth, no Wi-Fi, and a tamper response that erases the key if the case is breached. For resisting physical attack it is among the better-designed devices here.
The software trade-off
Firmware is closed and has had limited independent review. The companion app is mandatory for transaction construction and collects more usage data than open alternatives. For a category where the point is eliminating trust, requiring users to trust both an unauditable device and a data-collecting app is a meaningful step backwards from what BitBox or Trezor offer.
Practical use
QR-only workflow, large colour touchscreen, broad chain coverage through the Ellipal app, and firmware updates by microSD. The interface is approachable and the air gap is real.
Who should use it
Users whose primary concern is physical tampering and who accept closed software. Anyone weighing verifiability should choose a Keystone — comparable air gap and coverage, more of the stack open to review.