Shopify App similar to nimbuspost

I am looking for a Shopify app similar to nimbuspost.

Specific Features:
- Shipping integration
- Customizable templates

Integration:
- No need to integrate with any external software solutions

Customer Data:
- I need to collect customer data in the app and connect to our panel where order sync

Ideal Skills and Experience:
- Experience in developing Shopify apps
- Knowledge of shipping integration and inventory management
- Ability to create customizable templates
- Strong understanding of data collection and security measures