Connect Any USB Scale Directly to Your Systems
Eliminate manual weight entry errors and automate shipping processes — completely free app with optional integration.
Key Benefits
Works Without a Computer
Connect scales directly to Android devices — no Windows software needed. Compatible with Mac, Linux, and any modern web stack.
Real-Time Weight Transmission
Instant WebSocket data transfer to any backend or frontend system. Integrates with Node.js, Express, React, and any modern framework.
Free Base App
The app itself is free! Get high-visibility weight display with large fonts, instant unit conversion (g, kg, oz, lbs), and clear measurements visible from across the warehouse floor.
Designed for Operations
Large, high-contrast weight readings visible from distance. Sound notifications for eyes-off operation.
For Logistics & Fulfillment Professionals
Manual weight entry mistakes cost fulfillment operations thousands in reshipping costs. Direct digital capture with ScaleSync Pro eliminates these errors completely, reducing package processing time by up to 40%.
For Small Businesses & Crafters
Get enterprise-level shipping accuracy without enterprise-level complexity. Scale once, ship with confidence, and focus on growing your business, not copying weight numbers.
Works With the Scales You Already Have
ScaleSync Pro supports standard USB HID scales from leading manufacturers:
- DYMO postal scales
- Stamps.com digital scales
- Mettler Toledo shipping scales
- Fairbanks scales
- And many more standard USB HID scales
Coming soon: Calibration, counting, weight averaging, and specialized measurement modes for kitchen and coffee applications.
Integration with Major Platforms
Future updates will include direct plugins for:
- WooCommerce
- Shopify
- And other e-commerce platforms
While services like ShipStation already offer Windows-based scale connectivity, ScaleSync Pro provides an alternative for environments without Windows PCs, such as Mac/Linux users or warehouse stations with minimal computing equipment.
Why Choose ScaleSync Pro?
| Feature | ScaleSync Pro | Windows Software | Manual Entry |
|---|---|---|---|
| No PC required | ✅ | ❌ | ❌ |
| Cross-platform | ✅ | ❌ | N/A |
| Real-time data | ✅ | ✅ | ❌ |
| Error-free | ✅ | ✅ | ❌ |
| Multiple scale stations | ✅ | ❌ | N/A |
| Works with modern websites | ✅ | Limited | N/A |
Free App with Optional Paid Integration
The ScaleSync Pro app is completely free to download and use. You only pay if you need the WebSocket integration features:
- Free Basic App: High-visibility weight display with large fonts, instant conversion between all standard units (mg, g, kg, oz, lbs, ct, dwt, gr, ozt, etc.), and clear measurements visible from across the room
- Standard Plan: $9/month billed annually ($108/year) or $18/month billed monthly - Unlock WebSocket integration with support for multiple scale stations (one Android device per scale)
- Enterprise: Contact us for custom deployments
Download Free App Try Our Live Demo
Technical Specifications
- Supports standard USB HID scale protocols for maximum compatibility
- Fully implements USB HID Scale Usage Table 0x8D as defined in the HID specification
- WebSocket transmission for real-time data integration
- Secure WebSocket connections (
wss://) with TLS encryption for data transmission - 99.9% uptime for our WebSocket relay infrastructure
- Structured JSON data format with comprehensive weight unit conversion
- Supports all weight units defined in the USB HID scale specification (mg, g, kg, oz, lbs, ct, dwt, gr, ozt, taels, and more)
- Compatible with Android 5.1+ on devices with USB OTG support
- Automatic reconnection to any connected USB HID scale device
- Visual and audible indicators for successful readings
- Tested and verified with devices from major manufacturers across warehousing and logistics environments
Frequently Asked Questions
Is the app really free?
Yes! The ScaleSync Pro app itself is completely free to download and use. You only pay for the WebSocket integration feature if you need to connect the scale data to your systems.
Why use an Android device instead of a computer?
Dedicated Android devices eliminate software conflicts, simplify setup, and offer a purpose-built interface for weight capture. They’re also more cost-effective for multi-station deployments.
Will this work with my web application?
Yes! ScaleSync Pro uses standard WebSockets that work with any modern web stack including React, Angular, Vue, NestJS, Svelte, Node.js, and Express. Compatible with legacy systems too - jQuery, PHP, Classic ASP, or even plain vanilla JavaScript. No special libraries required!
How do I connect ScaleSync Pro to my shipping software?
After installing the app, you’ll receive a unique WebSocket URL that can be integrated with your software. Just scan the displayed QR code to instantly access a live demo with your scale. We provide simple JavaScript examples for quick integration.
How many scales can I connect with one subscription?
The Standard Plan supports up to 10 scale stations (each requiring its own Android device). For larger deployments or high-volume operations, please contact us about our Enterprise options.
What types of scales are NOT supported?
ScaleSync Pro works with standard USB HID scales but does not support:
- Serial/COM or RS-232 scales
- USB virtual COM port scales
- USB serial converter scales
- Scales without USB connectivity
If you’re unsure about compatibility, purchase your scale from a retailer with a good return policy.