I'm building an iOS app with in-app video chat; what SDK should I use?

If you’re building iOS in-app video chat, the “best” SDK depends on what you need, but here are the most common choices:

Good SDK options

1. Agora

Best for: fast integration, real-time video/audio, live interactive apps
Pros:

• Easy to integrate
• Low-latency video
• Good global network performance
• Supports calling, live streaming, screen share, etc.

Cons:

• Can get pricey at scale
• Some advanced features are tied to their platform

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2. Twilio Video

Best for: teams already using Twilio or wanting a strong developer ecosystem
Pros:

• Solid docs and APIs
• Good for 1:1 and group video calls
• Works well with Twilio’s broader communications stack

Cons:

• Can be more expensive
• Setup can be more involved than Agora for some use cases

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3. Vonage Video API (OpenTok)

Best for: custom video experiences and enterprise apps
Pros:

• Mature video API
• Flexible architecture
• Good for custom layouts and workflows

Cons:

• Slightly more complex than simpler SDKs
• Pricing and implementation can be less straightforward

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4. Daily

Best for: quick integration and modern developer experience
Pros:

• Very easy to get started
• Clean API
• Great for embedded video chat and custom UIs

Cons:

• Smaller ecosystem than Twilio/Agora
• Might be less ideal for very large-scale or highly specialized deployments

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5. 100ms

Best for: apps needing customizable video rooms, webinars, or interactive sessions
Pros:

• Strong room-based abstractions
• Good UI-building tools
• Great for social/audio/video rooms

Cons:

• More opinionated architecture
• Less ideal if you want full low-level control

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My practical recommendation

• Simple 1:1 or group video chat: Agora or Daily
• If you already use Twilio: Twilio Video
• If you need highly custom workflows / room-based experiences: 100ms or Vonage

What to consider before choosing

• Number of participants
• Need for screen sharing / recording / chat / push notifications
• Latency requirements
• Global reach
• Pricing at your expected scale
• Whether you want fully managed infrastructure or more control

If you want, I can also give you:

1. a feature-by-feature comparison table, or
2. a recommendation based on your app type (e.g., dating app, telehealth, tutoring, marketplace, social app).