Sell Anywhere. Stay Online.
Rhombus is a mobile-ready POS built for food trucks, pop-ups, and vendors who cannot afford downtime. Run your business from iOS, Android, or Windows — with optional LTE connectivity when Wi-Fi is not dependable.
Mobile businesses do not get second chances.
When the line is long and the lunch rush hits, you do not have time to fight:
Rhombus is designed for businesses that move.
A POS That Works Where You Work
The Rhombus Advantage
Built to handle real-world selling conditions — events, parking lots, festivals, and high-volume rushes.
Fast Checkout
Quick workflows built for busy service windows and high-volume rushes.
Cross-Platform
Runs natively on iOS, Android, and Windows devices you already own.
Hardware Freedom
Use what you already own — no forced proprietary equipment purchases.
Optional LTE
Stay connected with optional LTE/SIM when Wi-Fi is unavailable or unreliable.
Month-to-Month
Simple monthly pricing with no long-term lock-in or surprise fees.
Offline-Friendly
Keep selling during outages — process transactions when connectivity returns.
Wi-Fi When You Have It. LTE When You Need It.
Most POS systems advertise LTE. The difference is whether it supports your business when conditions are not perfect. Rhombus offers an optional LTE/SIM line so mobile vendors can keep selling even when:
Everything You Need. Nothing You Do Not.
Your Setup, Your Way
Every mobile business is different. Rhombus supports the setup that fits your operation. You do not need to buy into a locked ecosystem to get a professional POS.
Simple & Portable
Tablet + card reader for the simplest mobile setup.
Fast & Compact
Handheld + receipt printer for quick-service operations.
High Volume
Full station + customer display for busy service windows.
Multi-Device Teams
Take orders and run payments separately for maximum speed.
Food Truck Connectivity Checklist
Keep payments fast and dependable during rush. Follow these quick checks to stay selling.
1 Before Every Shift (30 seconds)
- Charge the terminal (battery = sales)
- Confirm LTE signal bars are showing
- Run a quick test transaction
- Reboot the terminal before a big rush (optional)
2 Terminal Placement
Food trucks are metal boxes that can block signals. Best placement:
Best:
- Near a window or service hatch
- Closer to the outside wall
- Away from fridges and generators
Avoid:
- Deep inside the truck
- Behind metal panels
- Next to heat sources
3 If Payments Slow Down (60-second fix)
- 1. Move the terminal closer to the service window
- 2. Toggle Airplane Mode ON then OFF (wait 10 seconds)
- 3. Restart the terminal and retry
4 Festival & Packed Event Tips
- Reboot terminal before peak traffic
- Keep terminal near the opening or window
- Avoid switching networks mid-rush
- Have a backup plan ready (cash or alternate method)
Frequently Asked Questions
Do I need Wi-Fi to use Rhombus?
No. Rhombus supports offline-friendly workflows, and LTE options are available for mobile uptime.
Can I use the devices I already own?
Yes. Rhombus is designed to work across common device types so you can build the setup you want.
Is Rhombus month-to-month?
Yes. No long-term contracts. No lock-in.
How fast can I go live?
Most merchants can be up and running quickly depending on hardware and setup needs.
Ready for a POS Built for the Road?
Let us build the right setup for your truck, trailer, cart, or mobile business.