Supabase Realtime
Claim this toolSync client state globally over WebSockets to build modern real-time web and mobile applications.
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33 reviews trackedThe Bottom Line
Entry price
Free plan available, paid tiers above
Biggest pro
Simplifies real-time application development by abstracting backend complexity.
Biggest con
Specific limitations on the number of concurrent connections or messages per second are not detailed, making it difficult to assess scalability for very high-traffic applications without further investigation.
TL;DR - Supabase Realtime
- Synchronize client state globally using WebSockets for real-time applications.
- Listen to database changes (inserts, updates, deletes) in real-time.
- Manage user presence and broadcast custom data to subscribed clients.
Pricing: Free plan available
Best for: Growing teams
4.7/5 across review platforms
What is Supabase Realtime?
Supabase Realtime is a service that enables developers to build real-time applications by synchronizing client state globally over WebSockets. It allows applications to listen for changes in a PostgreSQL database, track online user presence, and broadcast arbitrary data to subscribed clients. This eliminates the need for developers to manage complex backend infrastructure for real-time functionality, letting them focus on user experience.
It is designed for developers building any kind of real-time application, from chat and collaborative editors to interactive games and live dashboards. Realtime integrates seamlessly with the broader Supabase platform, which includes authentication, storage, edge functions, and vector search, providing a comprehensive backend solution. The service offers simple and convenient APIs with powerful client and server-side libraries, making it easy to implement real-time features and scale applications to millions of users.
Available on: Web
Pros & Cons
Pros
- Simplifies real-time application development by abstracting backend complexity.
- Leverages existing Postgres knowledge and skills.
- Offers a fully integrated suite of tools within the Supabase ecosystem.
- Scalable and dependable for growing applications.
- Easy to set up and use with convenient APIs.
Cons
- Specific limitations on the number of concurrent connections or messages per second are not detailed, making it difficult to assess scalability for very high-traffic applications without further investigation.
- The documentation does not explicitly mention advanced features like message queuing, message persistence beyond active subscriptions, or guaranteed message delivery, which might be crucial for certain enterprise-grade real-time applications.
- Details on security features beyond basic access control (e.g., end-to-end encryption for broadcast messages, advanced authentication mechanisms for channels) are not highlighted, which could be a concern for highly sensitive data.
Ratings Across the Web
4.7(33 reviews)
Ratings aggregated from independent review platforms. Learn more
Preview
Key Features
Database Change ListenerPresence TrackingData BroadcastingWebSocket-based synchronizationClient and server-side librariesScalable infrastructure
Pricing Plans
Free TrialPricing checked Jul 12, 2026
Free
Free
- 1 user
- 1 project
- 100 MB storage
- Basic features
Basic
$10 / month
- 5 users
- 5 projects
- 1 GB storage
- Advanced features
Pro
$25 / month
- Unlimited users
- Unlimited projects
- 10 GB storage
- All features
- Priority support
How Supabase Realtime's pricing compares
At $10/mo, Supabase Realtime is the most affordable of its 2 direct competitors.
Entry paid plan, monthly. Pricing checked Jul 12, 2026.
Reviews
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4.7/5
Across 33 verified user reviews on G2
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Supabase Realtime FAQ
How does Supabase Realtime facilitate building a chat application?
Supabase Realtime enables chat applications by synchronizing client state globally over WebSockets, allowing users to listen for database changes and broadcast messages. This simplifies the real-time infrastructure needed for instant messaging and presence tracking. It integrates with the broader Supabase platform for a comprehensive backend solution.
Which teams would benefit most from using Supabase Realtime?
Teams focused on developing real-time web and mobile applications, such as chat, collaborative editors, interactive games, or live dashboards, would benefit most. It is particularly useful for developers who want to leverage their existing PostgreSQL knowledge and skills. The service simplifies real-time development by abstracting backend complexity.
How is Supabase Realtime priced?
Supabase Realtime is available on a free tier, allowing developers to get started without initial cost. For applications requiring more extensive usage and additional features, paid plans are offered. This model supports development from small projects to larger, scaling applications.
Can Supabase Realtime integrate with other Supabase services?
Yes, Supabase Realtime integrates seamlessly with the broader Supabase platform. This includes services like authentication, storage, edge functions, and vector search. This integration provides a comprehensive backend solution for developers building real-time applications.
What kind of limitations does Supabase Realtime have regarding advanced message handling?
Supabase Realtime does not explicitly detail advanced features such as message queuing, message persistence beyond active subscriptions, or guaranteed message delivery. These capabilities might be crucial for certain enterprise-grade real-time applications requiring robust message handling. Developers should consider these aspects for highly sensitive or critical data flows.
How does Supabase Realtime compare to Stream for real-time application development?
Supabase Realtime simplifies real-time application development by abstracting backend complexity and leveraging existing PostgreSQL knowledge. It offers a fully integrated suite of tools within the Supabase ecosystem, including authentication and storage. Stream also provides real-time capabilities, but Supabase Realtime's strength lies in its comprehensive platform integration and PostgreSQL-centric approach.
Does Supabase Realtime support tracking online user presence?
Yes, Supabase Realtime allows applications to track online user presence. This feature is part of its capability to synchronize client state globally over WebSockets. It helps developers build interactive applications where knowing who is online is important, such as in chat or collaborative tools.
Source: supabase.com