Best Firmware Development Service Providers

Byte Lab vs Spyrosoft: full comparison for 2026

Quick verdict

Byte Lab (4.3/5) edges ahead of Spyrosoft (3.9/5) overall. Byte Lab is the better choice for EU buyers wanting firmware plus low-volume boards. Spyrosoft is the stronger option for EU automotive and EV-charging embedded teams. The right choice depends on your project size, budget, and required tech stack.

Byte Lab vs Spyrosoft: head-to-head summary

Criterion Byte Lab Spyrosoft
Founded 2011 2016
HQ Zagreb, Croatia Wrocław, Poland
Team size 51–200 1,500+
Rating 4.3 / 5 3.9 / 5
Primary differentiator ST and Nordic design partner that also offers low-volume manufacturing in-house Polish delivery for embedded HMI, EV charging and embedded security testing
Pricing model Fixed project, time & materials Time & materials, dedicated team
Min. engagement Not disclosed Not disclosed
Primary tech stack C, C++, Zephyr C, C++, Qt
Industries served Industrial IoT, Consumer electronics, Medical devices Automotive, Energy & EV charging, Aerospace & defence

Byte Lab vs Spyrosoft: overview

Byte Lab

Byte Lab began in Zagreb in 2011 and has grown into a group of roughly 150 people with offices in Croatia and Austria (per company website; independently unverifiable). It is a design partner for both STMicroelectronics and Nordic Semiconductor, and its services include embedded hardware design, firmware and embedded software development, GUI work and low-volume manufacturing. That last point is unusual among firmware vendors: a client can receive working boards in small quantities from the same company that wrote the code. Clutch reviews describe IoT, industrial and consumer device projects.

Spyrosoft

Spyrosoft was established in Wrocław in 2016 and grew quickly to more than 1,500 staff and roughly $122 million in 2024 revenue across about 15 offices. Its embedded unit works on HMI software, automotive systems, EV-charging firmware testing and embedded security, including secure boot and OTA updates. It also has a defence and cybersecurity line. The firm is a good fit for EU buyers who need Polish delivery and a mix of embedded and application engineers.

Services and capabilities: Byte Lab vs Spyrosoft

Capability Byte Lab Spyrosoft
Bare-metal & RTOS firmware ✓ ✗
Embedded Linux & BSP ✗ ✓
Electronics & PCB design ✓ ✗
Wireless & IoT connectivity ✓ ✗
Secure boot & OTA ✗ ✓
FPGA development ✗ ✗
Firmware testing & HIL ✓ ✓
Dedicated team model ✗ ✓

Tech stack comparison: Byte Lab vs Spyrosoft

Framework / platform Byte Lab Spyrosoft
FreeRTOS ✓ N/A
Zephyr ✓ N/A
Embedded Linux N/A ✓
Yocto N/A N/A
AUTOSAR N/A ✓
STM32 ✓ N/A
Nordic ✓ N/A
NXP N/A N/A
FPGA N/A N/A

Pricing comparison: Byte Lab vs Spyrosoft

Criterion Byte Lab Spyrosoft
Minimum engagement Not disclosed Not disclosed
Engagement models Fixed project, Time & materials Dedicated team, Time & materials
Rate transparency Not public Not public
Price tier Mid-market Mid-market

Target audience comparison: Byte Lab vs Spyrosoft

Dimension Byte Lab Spyrosoft
Best company size Startup to mid-market Startup to mid-market
Best industries Industrial IoT, Consumer electronics, Medical devices Automotive, Energy & EV charging, Aerospace & defence
Best use cases Building 50–500 pilot units of a Nordic-based sensor with firmware, Developing a TouchGFX interface for an STM32 appliance controller Building a Qt-based HMI for an EV charger, Running a security assessment of a device's firmware update path
Typical project type Fixed project Dedicated team

Byte Lab vs Spyrosoft: pros and cons

Byte Lab
+ Low-volume production lets a startup get pilot units without finding a separate manufacturer
+ Design partner status with ST and Nordic covers the two MCU families most IoT products use
+ Croatian base means EU contracts and rates below Western European design houses
+ GUI work on LVGL and TouchGFX suits products with small touch displays
- Low-volume manufacturing stops well short of mass production, so a contract manufacturer is still needed later
- Less public material on regulated medical or automotive safety projects than larger firms
Spyrosoft
+ Embedded HMI and Qt experience for automotive and industrial displays
+ Embedded penetration testing and secure-boot work
+ EU contracts and Polish engineering rates
- Rapid growth since 2016 means team seniority can vary
- Embedded is one unit within a broad software company

Who should choose Byte Lab?

A typical fit: building 50–500 pilot units of a Nordic-based sensor with firmware.

ST and Nordic design partner that also offers low-volume manufacturing in-house. Minimum engagement is not publicly disclosed. Works best with clients in Industrial IoT, Consumer electronics, Medical devices.

Who should choose Spyrosoft?

A typical fit: building a Qt-based HMI for an EV charger.

Polish delivery for embedded HMI, EV charging and embedded security testing. Minimum engagement is not publicly disclosed. Works best with clients in Automotive, Energy & EV charging, Aerospace & defence.

Decision matrix: Byte Lab vs Spyrosoft

Your situation Recommended choice
You need full-ownership delivery on a defined project scope Byte Lab
You need a large dedicated team for an ongoing programme Spyrosoft
Your budget is at the lower end Compare: Byte Lab (Not disclosed) vs Spyrosoft (Not disclosed)
You need specialist depth in a specific vertical Byte Lab
You need engineers to extend your own firmware team Spyrosoft
You need consulting before committing to a build Both may offer discovery engagements

Use case fit: Byte Lab vs Spyrosoft

Use case Byte Lab fit Spyrosoft fit Winner
Building 50–500 pilot units of a Nordic-based sensor with firmware Strong Limited Byte Lab
Developing a TouchGFX interface for an STM32 appliance controller Strong Limited Byte Lab
Building a Qt-based HMI for an EV charger Limited Strong Spyrosoft
Running a security assessment of a device's firmware update path Limited Strong Spyrosoft
Fixed-price firmware build Strong Limited Byte Lab
Extending an in-house firmware team Strong Strong Both

Verdict: Byte Lab vs Spyrosoft

Byte Lab (4.3/5) is the stronger overall choice for most Firmware Development projects. ST and Nordic design partner that also offers low-volume manufacturing in-house.

Spyrosoft (3.9/5) is worth a look if you need running a security assessment of a device's firmware update path. If your situation matches that, Spyrosoft is a competitive option.

Related comparisons

Byte Lab vs Spyrosoft FAQ

Is Byte Lab better than Spyrosoft?

Byte Lab (4.3/5) scores higher overall, but "better" depends on your use case. Byte Lab's strongest advantage: low-volume production lets a startup get pilot units without finding a separate manufacturer. Spyrosoft's strongest advantage: embedded HMI and Qt experience for automotive and industrial displays.

How do Byte Lab and Spyrosoft differ in pricing?

Byte Lab uses fixed project, time & materials pricing. Spyrosoft uses time & materials, dedicated team pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: Byte Lab or Spyrosoft?

Byte Lab is the larger team and typically the better enterprise-scale choice. For very large programmes, verify team size and compliance coverage directly with each service provider before shortlisting.

What are the main differences between Byte Lab and Spyrosoft?

Byte Lab's primary differentiator is: ST and Nordic design partner that also offers low-volume manufacturing in-house. Spyrosoft's primary differentiator is: polish delivery for embedded HMI, EV charging and embedded security testing. They also differ in team size (51–200 vs 1,500+), minimum engagement (Not disclosed vs Not disclosed), and primary industries served (Industrial IoT, Consumer electronics vs Automotive, Energy & EV charging).

Verify all details directly with each service provider before making a decision.