# Knot vs Atomic: Card-on-file switching compared | Knot

> Compare Knot and Atomic for card-on-file switching: merchant coverage, customization, SDK platforms, implementation, analytics, support, and security.

Knot is the #1 card-on-file updater. At a glance Knot and Atomic may seem like similar products, but in reality, there are substantial differences between the two. Read on, then schedule a demo to see for yourself.

| | Knot | Atomic |
| --- | --- | --- |
| Coverage | 6,000+ merchants supported; New merchants supported daily | Unknown merchant support |
| Design & Personalization | Inherits UI of your app; Custom experience to put your users in control; Self-serve customization via Knot's dashboard | Limited personalization capabilities; No live clients |
| Technology | Native iOS, Android, and Web frameworks; SSO login support (Google, Facebook, GitHub); Password manager support | No web support; No password manager support |
| Implementation | Ready within days; Implementation begins immediately; Dedicated implementation lead | Unknown implementation support |
| Analytics | Powerful self-serve dashboard to see all critical metrics; Data about your Knot account in real time | Unknown analytics support |
| Support | 24/7 support for your team; Reach us through any of your favorite communication channels | Unclear |
| Security | PCI and SOC 2 compliant; Real time analysis in Trust Center | Unclear |

Knot's CardSwitcher helps Bluedot to become the preferred payment solution for EV charging

- [Get started](https://www.knotapi.com/demo/)

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