Cypher eSIM is described as 'Privacy-focused travel eSIM covering 180+ countries. Pay with Bitcoin, USDT, Solana, TON or Monero — no account, ID, or email required. Pick a plan, pay, scan one QR code, and you're online in ~60 seconds. Works on the web or entirely inside Telegram' and is an website in the bitcoin & cryptocurrency category. There are more than 25 alternatives to Cypher eSIM, not only websites but also apps for a variety of platforms, including iPhone, Android, iPad and Android Tablet apps. The best Cypher eSIM alternative is Hushed. It's not free, so if you're looking for a free alternative, you could try eSIMFree or Roafly. Other great sites and apps similar to Cypher eSIM are silent.link, Roamify, Saily and eSIM+.