ActiveSub: Subscription & Trial Saver

The Problem

Consumers lose hundreds of dollars annually to forgotten free trials and auto-renewing subscriptions. Relying on calendar apps is manual and error-prone.

The AWS Architecture

This tool utilizes a fully serverless, event-driven architecture to automate financial alerts:

• Data Persistence: User inputs are POSTed via API Gateway to an AWS Lambda function, which writes the expiration dates to a DynamoDB table.
• Cron Jobs: Amazon EventBridge triggers a daily Lambda execution that scans the database for trials expiring within 48 hours.
• Automated Alerts: When a match is found, Amazon SES (Simple Email Service) dispatches a formatted cancellation reminder directly to the user's inbox.