Mobile app analytics for iOS, Android and Flutter

React Native, Unity and .NET are not supported. The Flutter plugin covers iOS and Android apps, not Flutter web or desktop.

The 14 events an app can send

A fixed vocabulary, so every app's reports mean the same thing. Events record the screen they happened on, where there is one. Custom event names and custom properties are not supported, and the app version, OS version and consent state are checked when an event arrives but not stored, so there is no breakdown by them.

• app_open
• session_start
• screen_view
• cta_tap
• search_performed
• filter_applied
• signup
• login
• checkout_started
• booking_started
• payment_started
• booking_completed
• cancellation
• refund_requested

• Tracking health firstWhen the last event arrived, by server time, next to what the device's clock reported.
• Unavailable is not zeroA report that could not be read says so. It is never shown as a zero.
• Limits statedThe overview lists what the reports can and cannot answer; Attribution and Conversions state their own.

1. Step 1

   Choose a plan

   Create an account and choose Pro or Agency at checkout. App analytics is part of both.

2. Step 2

   Register the app

   Under iOS apps or Android apps in the dashboard. You get a public property ID: safe to embed, not a secret, and not enough to collect anything on its own.

3. Step 3

   Add the SDK

   From Swift Package Manager, the WebmasterID Maven repository or pub.dev. No private repository, account or access token.

4. Step 4

   Start it with a consent decision

   Initialize the SDK with the property ID and pass the user's decision. Until there is one, nothing is queued or sent.

5. Step 5

   Send events

   Screen views, taps and the funnel steps that matter to you. In Flutter, the plugin's lifecycle and navigator observers record app_open and screen_view for you.

6. Step 6

   Deliver them

   The SDK does it on its own, on iOS and Android: about 5 seconds after an event, when the app moves to the background, and after the next launch for anything left. flush() is only for a boundary your app chooses.

7. Step 7

   Verify the first event

   Apps → Overview → Tracking health shows the last event received. If nothing arrives, the guide's verification steps and the SDK's diagnostics say why.

The installation guide covers each step for Flutter, Swift and Kotlin or Java, including the first run, verifying the integration and troubleshooting by symptom.

• No decision, no data

  Until your app passes the user's decision, the SDK queues nothing and sends nothing.

• Allowed

  Events carry a session ID, an installation ID and, if your app calls identify(), an account key. Installation IDs and account keys are stored as keyed hashes: pseudonymous, not anonymous.

• Restricted

  Events carry a session ID only: no installation ID and no account key. This is reduced identification, not anonymity. The session ID, exact times and the country remain.

• Disabled

  Nothing is sent.

• No advertising identifiers

  The server refuses IDFA, IDFV, the Android advertising ID and other device identifiers. App Tracking Transparency is not requested, and an ATT answer is not consent to analytics.

• No IP address stored

  The country is taken from the network edge when an event arrives. No IP address or user agent is written.

Details in the installation guide: consent states, identifiers, and what the SDKs send for App Store privacy details and Google Play Data safety.

Monthly billing in USD; cancel any time. Compare every plan. Already on a plan? App analytics is already in your workspace: register an iOS app or an Android app.

Does registering an app start collecting data?

No. Registration creates the app's public property ID and nothing else. Events appear once the app has the SDK installed, starts it with the user's consent decision, sends events and delivers them.

When do events leave the device?

About 5 seconds after they are recorded, on iOS and Android alike, with no call from your app — and when the app moves to the background (best effort: the system may suspend the app first), and after the next launch for anything still queued. While the app is running, failed requests are retried on their own; a suspended or closed app sends nothing until it runs again. Before iOS SDK 1.3.0 and webmasterid_flutter 0.4.0, iOS sent only when the app called flush() or moved to the background; updating brings automatic delivery.

Do I need a website to use app analytics?

No. After checkout, open iOS apps or Android apps in the dashboard and register the app. App reports do not depend on a website.

Is WebmasterID a replacement for AppsFlyer or Adjust?

No. Those are mobile measurement partners: they attribute installs to ad networks and campaigns. WebmasterID's SDKs send no source, campaign or referrer, and WebmasterID does not connect to ad networks, SKAdNetwork, AdServices or the Install Referrer.

Is the data anonymous?

No. Installation IDs and account keys are stored as keyed hashes, which makes them pseudonymous, not anonymous. Under the restricted consent state, events carry only a session ID — reduced identification, still not anonymity.

Does it use the IDFA or ask for App Tracking Transparency?

No. Advertising and device identifiers are refused by the server, and WebmasterID does not ask for ATT. An ATT answer is not consent to analytics: your app passes its own analytics decision to the SDK.

Can I see web and app activity for the same person?

No. Websites and apps are reported side by side in one workspace, but identifiers are hashed per website and per app, so a visitor and an app user are never matched — nor is one user across an iOS and an Android app.

Which purchases count as revenue?

Only purchases verified with Apple or Google: production, revenue-bearing transactions, gross before refunds, each currency separately. Sandbox and test purchases never count. Checkout or payment events your app reports are shown as its own claims, apart from revenue.

Is RevenueCat supported?

No. Purchase verification works with StoreKit 2 on iOS and Google Play Billing on Android. RevenueCat and other purchase frameworks are not supported.

Do you support React Native or Unity?

No. There are native SDKs for iOS (Swift) and Android (Kotlin or Java), and a Flutter plugin for iOS and Android apps. React Native, Unity and .NET are not supported.

How much does it cost?

App analytics is included in Pro ($499/month) and Agency ($1,199/month), and in Business plans by agreement. The SDK packages are public downloads; sending events and reading the reports needs an active plan. There is no free plan for new accounts.