# firebase/quickstart-ios: What the Firebase iOS Samples Actually Cover

> A repository of per-product Firebase sample apps for iOS, each shipping Objective-C and Swift targets. It is a reference for wiring up a Firebase product, not a library you add to your own app.

**firebase/quickstart-ios** — Firebase Quickstart Samples for iOS

- Repository: https://github.com/firebase/quickstart-ios
- Website: https://firebase.google.com
- Stars: 3,030 · Forks: 1,538
- Language: Swift
- License: Apache-2.0
- Published: 2026-09-24 · Updated: 2026-09-24 · Language: en
- Canonical page: https://hysenlabs.com/projects/firebase-quickstart-ios

## What firebase/quickstart-ios solves, and for whom

Firebase ships many iOS SDKs, and each one has its own setup steps: a plist file, an initialization call, a console-side configuration. The gap between reading an API reference and seeing a product work on a device is where most integration time goes. This repository closes that gap by giving each product its own sample app. The README lists fourteen entries: A/B Testing, Analytics, Authentication, Remote Config, Crashlytics, Database, Firebase AI, Firebase Data Connect, Firestore, Functions, Cloud Messaging, Performance, and Storage. The audience is an iOS developer who has picked a Firebase product and wants a small, runnable reference before touching their own project.

The samples are deliberately not a framework. The README says each sample is opened as an Xcode project and run on a device or simulator. That framing tells you the intended use: read the code, run it, copy the pattern. Nothing here is published as a package you would add to an app's dependency list.

## How the sample repository is laid out

The top level is a directory per product: abtesting/, analytics/, authentication/, config/, crashlytics/, database/, firebaseai/, firestore/, functions/, inappmessaging/, installations/, messaging/, performance/, storage/, plus appdistribution/ and swiftui/. Shared code sits in shared/ and TestUtils/, and scripts/ holds tooling. Each product directory carries its own README, linked from the root list, and its own .xcodeproj. The README states that each sample contains targets for both Objective-C and Swift, so the same feature is demonstrated twice, in two languages, inside one project.

That layout has a practical consequence. You do not clone the whole repository to read one sample, and you should not expect a single build to cover everything. The per-product GitHub Actions badges in the README confirm the split: abtesting.yml, analytics.yml, authentication.yml, config.yml, crashlytics.yml, database.yml, firebaseai.yml, firestore.yml, functions.yml, messaging.yml, performance.yml, storage.yml. Twelve workflow files, each scoped to one sample. Firebase Data Connect is the outlier: the README points to a separate repository, firebase/data-connect-ios-sdk, under Examples/FriendlyFlix, rather than a directory here. If Data Connect is what you came for, you are leaving this repository.

## Running a sample: bundle ID, plist, and the Xcode project

The setup path in the README is short and has one step people get wrong. Open the .xcodeproj for the sample you want. Then add that sample app to a project in the Firebase console, using the bundle ID from the Xcode project. The console generates a GoogleService-Info.plist, which you download and place in the root directory of the sample, replacing the existing plist. The README notes you can add multiple sample apps to the same Firebase project, so separate console projects per sample are not required.

The repository also ships a mock-GoogleService-Info.plist at the top level, which is what the checked-in projects reference before you supply real credentials. A sample will not talk to Firebase until you replace it.

Style changes are gated. The README says to run the formatting script before opening a pull request, and that GitHub Actions verifies style compliance. The tooling installs through mint:

```bash
brew install mint
mint bootstrap
./scripts/style.sh
```

After that, the sample runs on a simulator or a device like any other Xcode project. What you should see depends on the product: the Authentication sample exercises sign-in flows, the Firestore sample reads and writes documents, and so on. The per-sample README in each directory is where the specific behaviour is described, not the root file.

## Where the samples stop being useful

The samples are single-product demos, and that shapes what they cannot tell you. A real app combines Authentication with Firestore, or Messaging with Analytics, and the interactions between products (security rules, token refresh, offline behaviour under a real data model) are outside the scope of any one sample. If your question is how two Firebase products behave together under load, this repository will not answer it.

The Data Connect entry is the clearest boundary. The root README does not link to a directory in this repository for it; it links to firebase/data-connect-ios-sdk. Anyone who assumes every listed product has a folder here will spend time looking for one.

There is also no release history in the repository, so there is no versioned artifact to pin and no changelog to read for breaking changes. The repository is not archived, and the last push was on 2026-09-17, which tells you the samples are being touched. It does not tell you that a given sample matches the SDK version your app already uses. Treat each sample as a snapshot of an integration pattern, and check it against your own dependency versions before copying code.

## The alternative: the official SDKs and their documentation

The real alternative is not another sample repository. It is the Firebase iOS SDK itself plus the product documentation at firebase.google.com, which the README points to. The difference in approach is directness. The SDK gives you the API surface and the docs describe each call; the quickstart gives you a complete, compiling project where the calls are already in context, with a UI attached and both language variants side by side.

That matters when the documentation is abstract about sequencing, for example which initialization must happen before which listener. It matters less when you already know the API and need the current signature, because the sample may lag the SDK. A developer integrating Authentication into an existing app with its own architecture will get more from the docs and the SDK than from a standalone sample that has no such architecture. Use the quickstart to learn the shape of an integration, then go to the SDK for the version you ship.

## Maintenance, licence, and what a fork costs you

The repository is under Apache-2.0, per the LICENSE file and the repository metadata. That is a permissive licence, and it is the same licence family Firebase uses elsewhere. It permits use, modification and redistribution with the usual conditions around notices and attribution. This is not legal advice; read LICENSE and, if you plan to redistribute sample-derived code, have counsel confirm the notice requirements.

Maintenance signals are limited to two facts: the repository is not archived, and the last push was on 2026-09-17. There are no retrieved releases, so there is no upgrade path to plan around. Upgrading, in practice, means pulling the current main branch and re-reading the sample you depend on, because the samples track the SDK rather than a version of their own. If you fork a sample into production code, you own that divergence: future changes to the sample will not arrive as a dependency update, and the style script and mint setup exist for contributions back to this repository, not for your fork.

## Conclusion

Adopt it as a reference when you need a working example of one Firebase product on iOS, and clone only the folder you need. Do not adopt it as a dependency or as a production codebase: there is no package to install and no release history in the repository. Verify first that the sample's Xcode project builds against your current SDK, and that the bundle ID you register in the Firebase console matches the one in the sample's plist.

## FAQ

### How do I run a firebase/quickstart-ios sample on a device or simulator?

Open the sample's .xcodeproj in Xcode and run it on a device or simulator. Before it can reach Firebase, add the sample app to a project in the Firebase console using the bundle ID from the Xcode project, then download the generated GoogleService-Info.plist and replace the existing plist in the sample's root directory.

### Do I need a separate Firebase project for each firebase/quickstart-ios sample?

No. The README states you can add multiple sample apps to the same Firebase project, so there is no need to create separate projects for each app.

### Does firebase/quickstart-ios include a sample for Firebase Data Connect?

Not in this repository. The README's Data Connect entry links to firebase/data-connect-ios-sdk and the Examples/FriendlyFlix README rather than to a directory here.

### Which languages do the firebase/quickstart-ios samples use?

Each sample contains targets for both Objective-C and Swift, according to the README, so the same feature is demonstrated in both languages within one Xcode project.

## Sources

- [firebase/quickstart-ios on GitHub](https://github.com/firebase/quickstart-ios)
- [Issues](https://github.com/firebase/quickstart-ios/issues)
- [License: Apache-2.0](https://github.com/firebase/quickstart-ios/blob/main/LICENSE)
- [Project website](https://firebase.google.com)
- [README](https://github.com/firebase/quickstart-ios/blob/main/README.md)

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Hysen Labs editorial analysis, written from the project's own repository and release notes. Cite the canonical page: https://hysenlabs.com/projects/firebase-quickstart-ios