How it plugs in
—Public API
NoOpen source
YesFree tier
Signal on Chat APIs6.3#8 of 32
ZEGOCLOUD describes In-app Chat as a chat SDK, API, and UIKit for adding messaging to mobile and web apps.

Pricing
- BasicUp to 100 MAUs · 200 members/group · 7 days message storageFree
- Pro$449 · Up to 10,000 MAUs · 200 members/group · 180 days message storage · additional MAUs charged in 10,000-user increments$449/mo
- EnterpriseContact ZEGOCLOUD · Customized MAUs, group size, and message storageOn request
As zegocloud.com lists them, checked 7 Oct 2026.