Start free. Add what you need.

No. The format, local file access, and core tools are not tied to a subscription. Your .eidos files remain yours to open, move, copy, and back up.

Sync costs $5 per month or $49 per year with automatic card billing through Creem. From Account → Sync, you can instead use 5 or 49 Credits for one paid period; renewal from Credits is optional and requires explicit consent.

Yes. Spark includes connecting Eidos Lite to a compatible Graft server. Activate Spark on each computer; existing owners can refresh benefits once. No Eidos Sync subscription is required. The server does not use a device seat. LAN sync remains free.

Eidos Sync encrypts file contents, paths, and version messages before upload. The service never receives your sync password or decryption keys, but still sees metadata such as the cloud Space display name, storage sizes, and request times. Keep your sync password and a local backup: an account password reset cannot recover encrypted contents. Sync encryption does not cover local files or Publish content.

Publish Free includes 10 public Markdown pages sharing 100 MiB, published from Eidos Lite after email verification. Pro costs $9 per month or $90 per year, with Eidos Files, Forms, protected access, 10 GiB storage, and one custom domain with automatic HTTPS. Subscribe by card here, or use 9 or 90 Credits for one paid period from Account → Publish; Promotional Credits are spent first. Custom adds higher file limits and dedicated Runtime.

Yes. Connect one domain you own in Account → Publish → Overview. It serves all your publications at their existing paths, with automatic HTTPS. Your original eidos.ink links keep working. You need DNS access and an active Pro plan; domain registration is separate. A root domain requires supported DNS flattening or ALIAS. The root and www are separate names, and www is not added automatically.

For a one-time Spark or Credits purchase, choose China as your billing country on Creem if that matches your billing details. Enter your name, select Continue to payment, then choose Alipay. Available methods depend on the checkout. Alipay currently supports one-time payments, not automatic Sync or Publish subscriptions. To use Alipay for those services, buy Credits first, then activate Sync or Publish from your Eidos account.

Credits are prepaid service value, not cash or cryptocurrency. Purchased and Promotional Credits can activate eligible Sync and Publish periods from your account; Promotional Credits are spent first. Credits alone never start a service or automatic renewal.