SigFox vs. LoRa: A Clear Comparison of LPWAN Technologies & Business Models

For years, Sigfox and LoRa dominated the low‑power wide‑area network (LPWAN) arena. Although their business models and underlying technologies differ, both aim to enable mobile operators to deploy city‑wide and nationwide IoT networks.

In recent years, new entrants such as Narrowband IoT (NB‑IoT) and LTE‑M have challenged Sigfox’s position. Technically, Sigfox performs well in Europe but struggles in the U.S. The 900 MHz band used in the U.S. suffers from high interference, and FCC time‑on‑air limits (400 ms) weaken links and reduce coverage.

IoT adoption has progressed slower than expected, limiting Sigfox’s royalty‑based revenue model. Recent talent turnover also signals internal challenges.

LoRa is likely to remain a niche technology as NB‑IoT and LTE‑M mature. A nationwide LoRa network in the U.S. seems unlikely under current conditions.

Today, the focus has shifted from raw network technology to real‑world use cases. Sigfox and LoRa remain competitors, but they are now tools that enable specific applications rather than the end product.

LPWANs will continue to play a critical role, making a Sigfox vs. LoRa comparison still relevant. Read on to understand their key differences and which use cases each best serves.

Technology Overview

Sigfox

Sigfox employs ultra‑narrowband modulation using binary phase‑shift keying (BPSK). By confining data to extremely narrow spectrum slices, it mitigates noise and keeps endpoint radios inexpensive. However, the base station requires more sophisticated hardware.

Signal directionality favors uplink: the base station’s superior receiver sensitivity gives a better link budget when sending data to the network than when replying to the device.

See also: What Is SigFox?

As of late 2017, Sigfox covered over 36 countries, with 17 offering nationwide service, and aimed to expand to 60 by 2018.

LoRa & LoRaWAN

LoRa uses chirp spread spectrum modulation, typically with a 125 kHz bandwidth, providing higher receiver sensitivity through coding gain. LoRaWAN, the MAC layer protocol, manages network control and data routing.

While LoRaWAN’s wider bandwidth increases susceptibility to interference, its coding gains maintain link budgets comparable to Sigfox. Both endpoint and gateway radios are inexpensive, as the same radio can serve both roles. Gateways are only modestly more costly than endpoints.

See also: What Is LoRa? & What Is LoRaWAN?

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Download our guide to explore Symphony Link and how it outperforms LoRaWAN in performance and security.

Business Models

Sigfox

Sigfox follows a top‑down strategy: it owns the entire stack—from cloud back‑end to endpoint firmware—while licensing hardware to silicon vendors such as STMicroelectronics, Atmel, and Texas Instruments. End‑device chips cost a few dollars and modules under $10 in volume, keeping hardware margins low.

Revenue comes from network operators paying royalties for reselling Sigfox’s software‑as‑a‑service platform. In some markets, Sigfox operates the network itself, such as in France and the U.S.

With over €300 million raised, Sigfox aims to partner with global operators. Its closed model—only one Sigfox network per region—offers simplicity but limits flexibility.

LoRa Alliance

The LoRa Alliance adopts an open‑specification approach. Anyone can download the LoRaWAN spec and build compliant hardware, but the radio chip is proprietary to Semtech. This openness encourages ecosystem growth, though standard evolution can be slower.

Beyond public networks, the Alliance envisions roaming between public and private LoRaWAN deployments, a feature still under development.

Use Cases: LoRa vs. Sigfox

While Sigfox’s network availability is limited, LoRa’s deploy‑and‑manage model offers broader reach. For applications requiring true bidirectional communication—such as grid monitoring or command‑and‑control—LoRa’s symmetric link is preferable.

Sigfox’s asymmetric link works well for small, infrequent transmissions like alarms or meter readings, provided sufficient network density.

Both technologies target similar markets and were originally designed for European bands (865–868 MHz). Adaptation to U.S. regulations is ongoing for both.

Takeaway

In IoT connectivity, the technology chosen determines performance, not merely the network. No single network will dominate the LPWAN space soon.

For projects demanding robust performance, consider Symphony Link—a LoRa‑based system that addresses common LoRaWAN limitations:

• Power Efficiency: Adaptive acknowledgements reduce transmission frequency, saving battery life.
• Cost‑Effective Coverage: Repeaters extend range at a fraction of outdoor access point cost.
• Unified Device Configuration: PKI‑based Diffie‑Hellman AES removes per‑device key management.
• Unlimited Duty Cycle: No restrictions on data volume.
• Interference Resilience: Up to 48 gateways can coexist in the 915‑MHz band without degrading performance.
• OTA Firmware Updates: Secure over‑the‑air upgrades eliminate manual intervention.

Explore our website to discover more benefits of Symphony Link, or contact a specialist to discuss your specific use case.