Mobile Analytics

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Expert mobile analytics covering attribution tracking, funnel analysis, crash reporting integration, A/B testing frameworks, retention and cohort analysis, event taxonomy design, privacy-compliant data collection, real-time dashboards, and actionable metric strategies for iOS and Android applications.

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File: SKILL.md
Length: 433 lines2,030 words, about 10 min read
Category: Software engineeringmobile development
Level: Intermediate
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Mobile Analytics

You are an expert in mobile app analytics and data-driven product development. You guide teams through designing event taxonomies, implementing attribution tracking, building conversion funnels, setting up crash reporting, running A/B tests, and analyzing retention to drive growth and improve user experience.

Event Taxonomy Design

Naming Convention

Event Naming Standard:
  Format: object_action (snake_case)
  Examples: screen_viewed, button_tapped, item_added_to_cart,
            purchase_completed, search_performed, error_displayed

Property Naming:
  Format: snake_case, descriptive, typed
  Examples: screen_name: string, item_price: float,
            currency: string (ISO 4217), result_count: integer

Avoid:
  - Camel case mixing (screenViewed vs screen_viewed)
  - Generic names (click, event, action)
  - PII in event properties (email, phone, full name)
  - Unbounded cardinality (free-text user input as property values)

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Event Naming Standard: Format: object_action (snake_case) Examples: screen_viewed, button_tapped, item_added_to_cart, purchase_completed, search_performed, error_displayed Property Naming: Format: snake_case, descriptive, typed Examples: screen_name: string, item_price: float, currency: string (ISO 4217), result_count: integer Avoid: - Camel case mixing (screenViewed vs screen_viewed) - Generic names (click, event, action) - PII in event properties (email, phone, full name) - Unbounded cardinality (free-text user input as property values)

protocol AnalyticsProvider { func track(event: String, properties: [String: Any]) func identify(userId: String, traits: [String: Any]) func screen(name: String, properties: [String: Any]) } final class AnalyticsManager { static let shared = AnalyticsManager() private var providers: [AnalyticsProvider] = [] func register(_ provider: AnalyticsProvider) { providers.append(provider) } func track(_ event: AnalyticsEvent) { let properties = event.properties.merging(globalProperties()) { _, new in new } for provider in providers { provider.track(event: event.name, properties: properties) } } private func globalProperties() -> [String: Any] { [ "app_version": Bundle.main.appVersion, "os_version": UIDevice.current.systemVersion, "device_model": UIDevice.current.modelName, "locale": Locale.current.identifier ] } } // Type-safe event definitions enum AnalyticsEvent { case screenViewed(name: String) case purchaseCompleted(transactionId: String, revenue: Double, currency: String) case onboardingStepCompleted(step: Int, name: String) case searchPerformed(query: String, resultCount: Int) var name: String { switch self { case .screenViewed: return "screen_viewed" case .purchaseCompleted: return "purchase_completed" case .onboardingStepCompleted: return "onboarding_step_completed" case .searchPerformed: return "search_performed" } } var properties: [String: Any] { switch self { case .screenViewed(let name): return ["screen_name": name] case .purchaseCompleted(let id, let revenue, let currency): return ["transaction_id": id, "revenue": revenue, "currency": currency] case .onboardingStepCompleted(let step, let name): return ["step_number": step, "step_name": name] case .searchPerformed(let query, let count): return ["query": query, "result_count": count] } } }

Tool	Strengths	Best For
Amplitude	Behavioral analytics, cohorts, funnels	Product analytics at scale
Mixpanel	Event analytics, A/B testing, flows	Growth-stage product teams
Firebase Analytics	Free, deep Android integration, BigQuery export	Early-stage apps, Google ecosystem
PostHog	Open source, session replay, feature flags	Privacy-conscious teams
Adjust / Singular	Attribution, fraud prevention, cost aggregation	Paid acquisition optimization

Mobile Analytics

More software engineering skills.

The full skill.

Mobile Analytics

Event Taxonomy Design

Naming Convention

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Mobile Analytics

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Mobile Analytics

Event Taxonomy Design

Naming Convention

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About this skill.

Event Taxonomy Structure

Analytics Implementation

iOS Analytics Layer

Attribution Tracking

Attribution Models

SKAdNetwork (iOS) Configuration

Funnel Analysis

Crash Reporting

A/B Testing

Experiment Framework

Sample Size Reference

Retention Analysis

Cohort Retention Table

Engagement Metrics

Privacy-Compliant Analytics

Analytics Tools Comparison

Dashboard Design

Production Checklist

When to Use

Output Format

Example

Edge Cases