Spark License

Eidos is an independently developed, open-source product. While local features are free forever, some advanced scenarios (cross-network data receiving, sync, etc.) require cloud computing resources—we call these Add-on Services.

Spark License unlocks premium cloud features through two core benefits:

1. Early Access to New Features

Be the first to try new capabilities:

Feature	Status
Custom Sync Provider	✅ Available (AWS S3, R2, MinIO, etc.)
Relay	✅ Available
Official Sync	⏳ Coming soon
Publish	⏳ Coming soon

2. Free Quotas for Add-on Services

Spark users receive free cloud resource quotas:

Relay

Parameter	Spark	Free¹
Channels	100	5
Storage	100 MB (~50k messages)	10 MB (~5k messages)
Retention	14 days	3 days
Max Message Size	128 KB	128 KB
API Rate Limit	1000 reqs/hr	1000 reqs/hr

¹ Free Relay is currently in a promotional trial period and will transition to a subscription model in the future.

Note

These quotas are dynamic and operate on a shared pool model. We do not guarantee permanent allocation at fixed levels—they may adjust based on infrastructure capacity and service growth.

Example: Current storage is 100 MB. As more Spark users join, the base quota may decrease to 50 MB for sustainability. However, early supporters permanently retain 2x the base quota (or higher, depending on tier), so they still enjoy 100 MB while new users start at 50 MB.