Pharmacies · Chile
Under constructionLocar: we are building a pharmacy that keeps selling even when the internet goes down
Under construction: point of sale, batch inventory and electronic receipts for pharmacies, designed to work with no internet.
The leak
The pharmacy runs on an old desktop point of sale. It needs to keep selling and printing valid receipts when the internet drops, take stock from the batch closest to expiry, and send everything to the tax authority with no manual work when the connection is back.
What we built
- Selling with no internet: a device in the store signs each receipt and keeps it until the connection is back.
- Electronic receipts sent to the tax authority on a schedule.
- Inventory by batch and expiry, with transfers, reorder points and alerts.
- Cash shifts with a closing that balances even after working offline.
- Several branches with roles, promotions and discounts approved by the pharmacist.

Demonstration images with sample data.
Result
- a multi-branch pharmacy system
- Under construction
How we built it
A local service in each branch signs and queues sales; in the cloud, an API on AWS Lambda with Amazon API Gateway, Amazon Cognito for access and PostgreSQL. A job scheduled with Amazon EventBridge sends the tax documents.
Technology
- AWS Lambda
- Amazon API Gateway
- Amazon Cognito
- Amazon EventBridge
- Amazon S3
- PostgreSQL
- Next.js
Does your business have a similar leak?
Book a call and we will tell you how we would solve it in your case.

