Sewio vs Ubisense
Two of the better-known names in ultra-wideband real-time location. They overlap on the physics and diverge on philosophy, scale and price. Here is how to choose without a sales engineer steering you.
If you only read one paragraph
Both deliver sub-metre UWB positioning. Sewio is the lighter, developer-friendly, faster-to-deploy option that suits mid-market manufacturing and logistics and teams who want open APIs and to build their own application on top. Ubisense is the heavyweight built for very large, process-critical deployments - most famously automotive assembly - where deep MES integration, proven scale and engineering support matter more than time-to-value or unit price.
How they compare
| Dimension | Sewio | Ubisense |
|---|---|---|
| Core technology | UWB, TDoA architecture | UWB, hybrid AoA + TDoA |
| Typical accuracy | 10-30 cm in good RF conditions | 15-30 cm; very consistent at scale |
| Software platform | RTLS Studio (Sensmap visualisation) | SmartSpace (rules, zones, process logic) |
| Integration approach | Open REST + MQTT + WebSocket; build-your-own friendly | Enterprise connectors, deep MES/PLM integration |
| Ecosystem openness | Open tag and developer ecosystem, good docs | More vertically integrated, vendor-led |
| Sweet-spot deployment | Mid-size plants, warehouses, single to multi-site | Large discrete manufacturing, automotive OEMs |
| Commercial profile | Accessible, mid-market pricing | Premium; enterprise contracting and services |
| Time to first value | Fast - pilots stand up quickly | Longer - engineered, governed rollouts |
Figures are typical real-world ranges, not vendor maximums under ideal lab conditions. Always validate against your own RF environment and use case.
Which one fits your situation
Lean towards Sewio when…
- You want a pilot live in weeks, not quarters
- Your team will build the application and wants open REST/MQTT data
- Budget is mid-market and you need a clear unit-economics story
- Use cases are logistics, WIP tracking or mid-size manufacturing
- You value developer experience and self-service documentation
Lean towards Ubisense when…
- You are tracking thousands of assets across very large facilities
- The system must drive process logic deep in MES/PLM, not just show dots
- You are in automotive or high-volume discrete manufacturing
- Proven enterprise scale and vendor engineering support are non-negotiable
- Sub-second reliability at scale outweighs unit price
What we tell clients in the room
Most buyers over-specify. If you do not genuinely need plant-wide, process-critical integration, the heavyweight platform strengths can become cost and complexity you pay for but never use - and a lighter mid-market UWB vendor will get you to value faster. Conversely, if you are an automotive OEM trying to run line sequencing off location data, the lighter platforms will show their limits as you scale. The honest split is about operational ambition and integration depth, not which UWB radio is "better" - at the chip level they are closer than either sales team will admit.
Questions to settle first
- Run a paid pilot in your actual RF environment - metal, racking and forklifts wreck lab numbers
- Get accuracy quoted as a distribution (e.g. 90th percentile), not a single best-case figure
- Confirm total cost including anchors, cabling, PoE, tags, batteries and annual software/support
- Pressure-test the integration: ask for a reference doing the exact MES/WMS handshake you need
- Clarify tag battery life and replacement logistics at your asset count
- Check who owns the data and whether you can export it if you change platforms
Keep exploring
- Impinj vs Zebra — passive RAIN RFID for high-volume item tracking
- Quuppa vs Aruba — BLE location: dedicated precision vs Wi-Fi-led coverage
Sewio and Ubisense are trademarks of their respective owners. TRACIO is an independent advisory firm and is not affiliated with, endorsed by, sponsored by, or a reseller for either vendor. This comparison reflects our general field experience and publicly available information, is provided for guidance only, and may not reflect the latest product releases. Always validate against current vendor documentation and your own pilot results.