Good experiences.
Thoughtful systems.

• CloudFront connects audio delivery and the playback API, separating delivery infrastructure from the app.
• Node.js Lambda handles the playback API; the device owns playback state and the audio cache.
• Expo AV controls playback and reuses downloaded tracks from the local cache.

Main v2 audio-delivery and device-playback paths at the reviewed source revision. Legacy v1 delivery, scheduled free-track rotation, push notifications, purchases, analytics, and monitoring are omitted. This diagram does not establish parity with live infrastructure or offline availability of every track.

• SwiftUI and AVFoundation handle input, voice, and presentation. Sending recent conversation context requires user consent.
• Python Lambda prioritizes JeV and switches a complete classification pair to OpenAI on failure, without mixing providers.
• The client checks quotes, turn IDs, and response structure. DynamoDB holds usage state; Secrets Manager holds external service configuration.

Cloud integration at the reviewed source revision. The new conversation path includes work in progress; this diagram does not establish App Store parity or classification accuracy. Apple authentication, purchases, and monitoring are omitted.

• Flutter UI connects to platform-specific native implementations that capture creative activity.
• Go Lambda functions ingest, rebatch, and aggregate events through SQS.
• DynamoDB stores metrics and S3 stores archives; Cognito handles authentication.

Simplified recording pipeline. Authentication, website, billing, dead-letter queues, and monitoring are omitted.

• Flutter connects the store workflow to customer Wallet passes.
• API Gateway and Node.js Lambda handle API processing for the store app.
• The API uses DynamoDB card and store data to issue and update Wallet passes.

Key API and Wallet integration only. S3 assets, notification queues, admin UI, and monitoring are omitted.

• UIKit extracts the rotated selection and feathers the generated band into the original photo.
• CloudFront and Lambda handle requests to the external AI provider.
• Lambda manages quota and job state, with state in DynamoDB and configuration in Secrets Manager.

Main generation flow. Authentication, purchases, and notifications are omitted. The AI provider is outside AWS.

• Canvas luminance, a Hann window, and a two-dimensional DCT produce frequency features.
• p5.js draws animated waves from the feature vectors.
• CloudFront serves the web app and routes API requests to Lambda and DynamoDB.

Main analysis and storage flow. Original images and compressed previews are distinct. Authentication, the mobile app, and monitoring are omitted.

• Processed photo IDs support resumable batches and avoid repeated analysis. Images are not uploaded for analysis.
• Python Lambda handles the recovery API, with usage state and storage records in DynamoDB.
• Photo bytes go to S3 and metadata goes through the API, separating file transfer from state management.

Conceptual view of on-device analysis and optional recovery storage. Sharing, invitations, App Clip, purchase verification, expiry cleanup, and monitoring are omitted.

• Local Three.js assets render the sphere inside WKWebView.
• JavaScript and Dart exchange time selections and configuration.
• Drift/SQLite stores alarms and events; OS notifications handle scheduling.

Time selection, storage, and scheduling. No custom app backend. RevenueCat and Firebase configuration/crash reporting are omitted.

• camera and image_picker supply images with zoom and flip controls.
• ColorFilter matrices transform tone; CustomPainter draws composition guides.
• Reference image position and opacity are adjustable; files are exported and shared locally.

Main image processing path. No custom app backend. Firebase Remote Config update prompts are omitted.

• Bundled Three.js renders in WKWebView. The interface and rendering layer derive their views from state returned by native code.
• A Swift ScanPipeline and repository persist progress. OCR results update after every page succeeds, supporting recovery from interrupted processing.
• SwiftData stores metadata and ImageStore stores photos. Search generation IDs prevent older asynchronous results from replacing newer input.

React Native integration and device storage at the reviewed source revision. There is no custom application backend. Work in progress is included; this diagram does not establish App Store parity. Capture, purchases, and migration details are omitted.