# Sentry IOS Swift Setup > Setup Sentry in iOS/Swift apps. Use when asked to add Sentry to iOS, install sentry-cocoa SDK, or configure error monitoring, tracing, session replay, logging, or profiling for iOS applications using Swift and SwiftUI. Use when this capability is needed. - Skill: `tomevault-io/sentry-ios-swift-setup` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/sentry-ios-swift-setup` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/sentry-ios-swift-setup/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/sentry-ios-swift-setup --- # Setup Sentry for iOS (Swift) This skill helps configure Sentry's iOS SDK (sentry-cocoa) for Swift and SwiftUI applications, including error monitoring, tracing, session replay, structured logging, and profiling. ## When to Use This Skill Invoke this skill when: - User asks to "setup Sentry for iOS" or "add Sentry to my Swift app" - User wants error monitoring, crash reporting, or performance monitoring for iOS - User requests session replay, tracing, logging, or profiling for iOS - User mentions "sentry-cocoa" or `SentrySDK.start` ## Platform Detection Before configuring, verify this is an iOS/Swift project: ```bash # Check for Xcode project files ls -la *.xcodeproj *.xcworkspace Package.swift 2>/dev/null # Check for existing Sentry installation grep -r "sentry-cocoa" Package.swift Package.resolved 2>/dev/null grep -i "sentry" Podfile Podfile.lock 2>/dev/null # Check for existing Sentry imports grep -r "import Sentry" --include="*.swift" . 2>/dev/null | head -5 ``` ### Minimum Requirements - **iOS**: 13.0+ / **Xcode**: 15.0+ / **Swift**: 5.0+ - **SDK Version**: 9.0.0+ (current stable: 9.3.0) --- ## Step 1: Install SDK ### Option A: Swift Package Manager (Recommended) **Via Package.swift:** ```swift dependencies: [ .package(url: "https://github.com/getsentry/sentry-cocoa", from: "9.0.0") ] ``` Or via Xcode: File > Add Package Dependencies > `https://github.com/getsentry/sentry-cocoa` ### Option B: CocoaPods ```ruby pod 'Sentry', '~> 9.0' ``` Then run `pod install`. --- ## Step 2: Locate App Entry Point Find the main app file: - **SwiftUI**: File with `@main` attribute (e.g., `YourAppApp.swift`) - **UIKit**: `AppDelegate.swift` --- ## Step 3: Initialize Sentry ### SwiftUI App ```swift import SwiftUI import Sentry @main struct YourAppApp: App { init() { SentrySDK.start { options in options.dsn = "YOUR_DSN_HERE" options.environment = "development" options.debug = true // Disable in production // Error monitoring options.attachScreenshot = true options.attachViewHierarchy = true // Tracing (1.0 = 100%, lower in production) options.tracesSampleRate = 1.0 // Profiling options.configureProfiling = { $0.sessionSampleRate = 1.0 $0.lifecycle = .trace } // Session Replay options.sessionReplay.sessionSampleRate = 1.0 options.sessionReplay.onErrorSampleRate = 1.0 // Structured Logging options.enableLogs = true } } var body: some Scene { WindowGroup { ContentView() } } } ``` ### UIKit App ```swift import UIKit import Sentry @main class AppDelegate: UIResponder, UIApplicationDelegate { func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { SentrySDK.start { options in options.dsn = "YOUR_DSN_HERE" options.environment = "development" options.debug = true options.attachScreenshot = true options.attachViewHierarchy = true options.tracesSampleRate = 1.0 options.configureProfiling = { $0.sessionSampleRate = 1.0 $0.lifecycle = .trace } options.sessionReplay.sessionSampleRate = 1.0 options.sessionReplay.onErrorSampleRate = 1.0 options.enableLogs = true } return true } } ``` ### Production Sample Rates For production, use appropriate sample rates: ```swift options.debug = false options.tracesSampleRate = 0.2 options.configureProfiling = { $0.sessionSampleRate = 0.2; $0.lifecycle = .trace } options.sessionReplay.sessionSampleRate = 0.1 options.sessionReplay.onErrorSampleRate = 1.0 ``` --- ## Structured Logging Requires SDK 8.55.0+ (recommended: 9.0.0+). Ensure `options.enableLogs = true` is set. ```swift let logger = SentrySDK.logger // Basic levels logger.trace("Detailed trace information") logger.debug("Debug information") logger.info("Informational message") logger.warn("Warning message") logger.error("Error occurred") logger.fatal("Fatal error") // With attributes logger.info("User action completed", attributes: [ "userId": "user_123", "action": "checkout", "itemCount": 3 ]) // String interpolation (values become searchable attributes) logger.info("User \(userId) purchased \(itemCount) items") ``` ### Log Filtering ```swift options.beforeSendLog = { log in if log.level == .debug { return nil } return log } ``` --- ## Session Replay By default, Session Replay masks all text, images, and user input. ### SwiftUI Masking Modifiers ```swift // Unmask safe content Text("Welcome to the App").sentryReplayUnmask() // Mask sensitive content Text(user.email).sentryReplayMask() Text(user.creditCardLast4).sentryReplayMask() ``` ### Masking by View Class ```swift options.sessionReplay.maskedViewClasses = [SensitiveDataView.self] options.sessionReplay.unmaskedViewClasses = [PublicLabel.self] ``` ### Unmasking for Development ```swift // WARNING: Only for development/testing options.sessionReplay.maskAllText = false options.sessionReplay.maskAllImages = false ``` --- ## Custom Spans With tracing enabled, Sentry automatically instruments app launches, URLSession requests, UI transitions, File I/O, Core Data, and app hangs. For custom operations: ```swift // Simple span let span = SentrySDK.span let childSpan = span?.startChild(operation: "custom.operation", description: "Processing data") // Do work... childSpan?.finish() // Async/await pattern func processOrder(_ orderId: String) async throws -> Order { let span = SentrySDK.span?.startChild( operation: "order.process", description: "Processing order \(orderId)" ) defer { span?.finish() } span?.setData(value: orderId, key: "order.id") let order = try await orderService.process(orderId) span?.setData(value: order.total, key: "order.total") return order } ``` --- ## User Context ```swift // Set user after authentication let user = User() user.userId = "user_123" user.email = "user@example.com" user.username = "johndoe" SentrySDK.setUser(user) // Clear on logout SentrySDK.setUser(nil) ``` --- ## Manual Error Capture ```swift // Capture an error do { try riskyOperation() } catch { SentrySDK.capture(error: error) } // Capture with extra context SentrySDK.capture(error: error) { scope in scope.setTag(value: "checkout", key: "feature") scope.setExtra(value: orderId, key: "order_id") } ``` --- ## Verification Steps ```swift // Test error capture SentrySDK.capture(message: "Test message from iOS app") // Test logging SentrySDK.logger.info("Test log from iOS app", attributes: ["test": true]) ``` **Check in Sentry:** 1. **Issues** - Look for test message 2. **Performance** - Look for app start transactions 3. **Replays** - Look for session recordings 4. **Logs** - Look for test log entry --- ## Common Issues and Solutions ### Issue: Events not appearing in Sentry **Solutions:** 1. Verify DSN is correct 2. Check `options.debug = true` for console output 3. Ensure network connectivity 4. Wait 1-2 minutes for events to process ### Issue: Session Replay not recording **Solutions:** 1. Verify `sessionSampleRate > 0` 2. Check SDK version is 8.0.0+ 3. For SwiftUI, check masking isn't hiding everything ### Issue: Tracing spans missing **Solutions:** 1. Verify `tracesSampleRate > 0` 2. Ensure spans are properly finished with `.finish()` ### Issue: Logs not appearing **Solutions:** 1. Verify `options.enableLogs = true` 2. Check SDK version is 8.55.0+ 3. Verify `beforeSendLog` isn't filtering everything ### Issue: CocoaPods installation fails **Solutions:** 1. Run `pod repo update` 2. Delete `Podfile.lock` and `Pods/` directory, re-run `pod install` 3. Ensure minimum iOS deployment target is 13.0+ --- ## Summary Checklist ```markdown ## Sentry iOS Setup Complete ### Installation: - [ ] SDK added via Swift Package Manager or CocoaPods - [ ] SDK version 9.0.0+ installed ### Configuration Applied: - [ ] DSN configured - [ ] Environment set - [ ] attachScreenshot / attachViewHierarchy enabled - [ ] Tracing (tracesSampleRate) - [ ] Profiling (configureProfiling) - [ ] Session Replay (sessionReplay settings) - [ ] Logging (enableLogs) ### Next Steps: 1. Set appropriate sample rates for production 2. Configure user context after authentication 3. Review masking for sensitive screens 4. Add custom spans for important operations ``` --- ## Quick Reference | Feature | Configuration | Minimum SDK | |---------|--------------|-------------| | Error Monitoring | Default (always on) | Any | | Tracing | `tracesSampleRate` | 8.0.0+ | | Profiling | `configureProfiling` | 8.0.0+ | | Session Replay | `sessionReplay.sessionSampleRate` | 8.0.0+ | | Logging | `enableLogs = true` | 8.55.0+ | | Replay Modifier | Purpose | |-----------------|---------| | `.sentryReplayMask()` | Hide view content | | `.sentryReplayUnmask()` | Show view content | | `.sentryReplayPreviewMask()` | Preview masking in SwiftUI previews | --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/getsentry) — claim your Tome and manage your conversions.