The Line includes third-party open-source software managed via the Swift Package Manager. We are grateful to the authors and maintainers of these projects.
The exact dependency graph can change between app releases. This page summarizes the primary packages shipped with the current production build; transitive libraries (also subject to their own licenses) are included as part of those distributions.
| Library | Version | Source |
|---|---|---|
| Firebase iOS SDK (Auth, Firestore, Analytics, Crashlytics, Remote Config, App Check, …) | 12.12.1 | github.com/firebase/firebase-ios-sdk |
| RevenueCat (Purchases, RevenueCat UI) | 5.70.0 | github.com/RevenueCat/purchases-ios-spm |
| Google App Measurement | 12.12.1 | github.com/google/GoogleAppMeasurement |
| Google Data Transport | 10.1.0 | github.com/google/GoogleDataTransport |
| Google Utilities | 8.1.0 | github.com/google/GoogleUtilities |
| GTMSessionFetcher | 5.2.0 | github.com/google/gtm-session-fetcher |
| gRPC Binary | 1.69.1 | github.com/google/grpc-binary |
| Interop for Google SDKs | 101.0.0 | github.com/google/interop-ios-for-google-sdks |
| leveldb | 1.22.5 | github.com/firebase/leveldb |
| nanopb | 2.30910.0 | github.com/firebase/nanopb |
| Promises | 2.4.0 | github.com/google/promises |
| App Check | 11.2.0 | github.com/google/app-check |
| abseil-cpp-binary | 1.2024072200.0 | github.com/google/abseil-cpp-binary |
| Google Ads on-device conversion | 3.5.0 | github.com/googleads/google-ads-on-device-conversion-ios-sdk |
Each project ships its own LICENSE or COPYING file in its repository. Common licenses in this stack include
Apache License 2.0 (many Google/Firebase components) and MIT (RevenueCat SDK — verify in-repo).
For authoritative terms, open the repository’s license file for the version you are auditing.