The Tealium library for Swift is fully compatible with apps running pure Swift, Objective-C, or any combination of the two. Since it is the newest and most up-to-date library, we strongly recommend implementing the Swift library if possible.

The Objective-C library is still fully supported, but the Swift library generally updates faster and has the newest features. Additionally, Swift has the widest compatibility of all Tealium libraries, including support for server-side Swift environments.

Check the comparison table below to figure out which is most suitable for your needs.

Memory Footprint & Performance

All SDKs have some performance and memory impacts on your app. This varies between apps, and may be difficult to measure the exact footprint of a specific SDK.

We have measured the Tealium Swift SDK against a baseline of a standard blank iOS Single View app. These figures may vary for your specific implementation, so they only serve as a rough indicator. All figures obtained using XCode Allocations Instrument.

Compiled App Archive (.ipa file)

• 3+ MB (includes all modules)

Runtime Memory Usage

• 2 - 2.5+ MB (Collect module and supporting modules)
• 7 - 10+ MB (Tag Management module, Collect module, and supporting modules)

Startup Time

• ≈0.05 seconds (approximate time from initialization to completion callback firing)

Swift Versions

• 4.0+ (Xcode 9.0+)

Operating Systems

• iOS 9.0+
• tvOS 9.2+
• macOS 10.11+
• WatchOS 3.0+

Tealium Products

• Tealium iQ Tag Management
• Tealium EventStream
• Tealium AudienceStream
• Tealium DataAccess

tealium-swift vs. tealium-ios

The Swift library was built from scratch on a completely new codebase to the Objective-C library, and there are some subtle differences between the two libraries in terms of the current feature set. Below, we have compared the different features of both libraries. If you have requests for new features, feel free to open an issue on our GitHub page, or contact your account manager.