BacBus Pro
BacBus is generous-free: discovery, object browsing, live reads, and all Modbus scanning are free forever, with no account or sign-in. BacBus Pro is a single one-time purchase — not a subscription — that unlocks the power-user extras for good.
What's free
- BACnet Who-Is discovery and device identity
- Full object-list scanning and live present-value reads
- Modbus connect, Discover points, and Scan unit IDs
- Modbus reads — holding registers, input registers, coils, discrete inputs, with all data types and word orders
The object scan in particular is free on purpose: it's the thing that makes BacBus worth opening, and it routinely reads devices that other tools come back empty on.
What Pro unlocks
| Feature | Where |
|---|---|
| Write BACnet present-values & command outputs at a chosen priority | BACnet |
| Relinquish a priority level, or relinquish all | BACnet |
| Write Modbus holding registers & coils | Modbus |
| CSV export & share for BACnet objects and Modbus reads | both |
In short: reading is free; writing, relinquishing, and exporting are Pro.
Pricing
BacBus Pro is a one-time purchase of $29.99 USD (local pricing varies by region; the live price is always shown in the app). There is no subscription and no recurring charge — once you buy it, it's yours.
How to buy
When you tap a Pro action — a Write, Relinquish, or CSV export — for the first time, BacBus shows the Pro screen describing what you get. Tap Unlock Pro and complete the purchase through the App Store. Locked actions are marked with a 🔒 so you can see what's gated before you commit.
:::tip Buy at your desk, use it in the field Purchases are handled by the App Store and need internet access to complete. Many jobsite controls VLANs are isolated with no route to the internet, so if you plan to write or relinquish in the field, unlock Pro before you go on site. Your entitlement is cached on the device and works offline afterward. :::
Restore a purchase
BacBus Pro is tied to your store account, so it follows you to new devices and survives reinstalls. On a new device, open the Pro screen and tap Restore purchase. No account or login is required — restore reads your existing purchase from the App Store.
Why one-time, not a subscription
BacBus is a field tool, not a service. You shouldn't have to rent the ability to write a setpoint. A one-time unlock matches how the tool is used and stands in deliberate contrast to subscription-only competitors.