GREWUS
GREWUS GmbH develops and manufactures acoustic signal transmitters (AVAS, backup alarms, MEMS microphones) and haptic actuators and measurement devices (HapForce, ArFi) for automotive Tier 1/2 supply, white goods, gaming, medical, and industrial customers, operating as an in-house production competence center within BeStar Holding.
- Company typePrivate
- Founded2007
- HeadquartersHamburg, Germany
- Headcount1,001–5,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What GREWUS does
GREWUS GmbH, founded in 2007 in Hamburg, Germany, develops and manufactures acoustic signal transmitters and haptic actuators, operating as a Tier 1 and Tier 2 supplier within BeStar Holding's six-plant, 1,000+ employee production network. The product portfolio divides into two technology stacks: acoustics (PETER backup alarms using third-octave noise technology, AVAS sound modules with CAN bus control for EV and hybrid regulatory compliance, and MEMS microphones with I2S and PDM digital interfaces) and haptics (HapForce voice coil actuators in three sizes, ArFi and ArFi Handheld measurement devices that quantify vibrotactile and acoustic feedback with accelerometer and load cell sensors, the HEBO evaluation board, and the Demo Driver signal generator). The technology base spans electromagnetic and piezoelectric approaches, including vibrotactile systems, actuators, electrotactile impulses, and the Exciter dual-output device; manufacturing is 100 percent in-house to meet automotive quality and traceability requirements.
The business model is hardware-driven: GREWUS sells components to enterprise B2B customers through direct sales to automotive OEMs and Tier 1 suppliers and through an expanding channel network that includes Redtree Solutions (covering European countries, the Middle East, and North America per the April 2025 partnership), Mki, Infinitus Trading, and DigiKey. Customer segments are weighted toward automotive (passenger vehicles, commercial vehicles, trucks, buses, tractors, and municipal vehicles) with secondary exposure to white goods, gaming, medical technology, and industrial controls; customized engineering services and prototyping supplement the core hardware revenue. Pricing is quote-based per specification, consistent with embedded automotive component supply, and is not publicly disclosed.
The company operates a self-defined ecosystem strategy: it hosts the annual interACTIVE HAPTICS Conference in Hamburg (held in 2023 and 2024), holds participating memberships in the Haptics Industry Forum, Haptics Alliance, EuroHaptics Society, IEEE, and Haptics Club, and maintains research ties with TUHH, SDU Denmark, Infineon, Interhaptics, PolyIC, and TouchNetix. Granted patents cover a vibration measurement device, a motor vehicle sound module, and actuator technology, supporting defensibility around AVAS compliance, vibrotactile measurement, and haptic feedback design. Certification portfolio includes ISO 9001, ISO 14001, ISO 45001, IATF 16949, and TISAX VDA ISA.
GREWUS firmographics
Firmographics- Name
- GREWUS
- Legal name
- GREWUS GmbH
- Website
- https://grewus.de
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- GREWUS GmbH develops and manufactures acoustic signal transmitters (AVAS, backup alarms, MEMS microphones) and haptic actuators and measurement devices (HapForce, ArFi) for automotive Tier 1/2 supply, white goods, gaming, medical, and industrial customers, operating as an in-house production competence center within BeStar Holding.
- Ownership category
- akta.pro rank
GREWUS industry classification
Industry- Product category
- Automotive Acoustic and Haptic Components
- NAICS
- Electrical Equipment Manufacturing (33531), Other Electrical Equipment and Component Manufacturing (3359), Motor and Generator Manufacturing (335312)
- SIC
- Electronic & Other Electrical Equipment (No Computer Equip) (3600), Motors & Generators (3621), Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Automotive ECUs/Control Modules & Embedded Electronics Manufacturing (IMACAJAC)
- akta.pro secondary industries
- Automotive Instrument Clusters, Displays & HMI Electronics Manufacturing (IMACAJAG), Automotive Electric Motors & Actuators Manufacturing (EPS/Brake-by-wire/Seat/Window) (IMACAJAL)
Keywords
Where GREWUS is headquartered
LocationHeadquarters
- HQ city
- Hamburg
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
GREWUS business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Acoustic Components Sales: Sale of acoustic signal generators including electromagnetic buzzers, piezoelectric buzzers, front panel buzzers, loudspeakers, backup alarms (PeTer), AVAS sound modules, and MEMS microphones to automotive, commercial vehicles, white goods, and other industries.
- Haptic Components Sales: Sale of haptic actuators including the HapForce series (voice coil actuators), haptic evaluation boards (HEBO), demo drivers, and ArFi haptic measurement devices for automotive, gaming, consumer electronics, and industrial applications.
- Customized Solutions and Engineering Services: Customized component development and tailored engineering services to optimize and adapt components to specific application and production requirements, including reusable packaging and safety stock management.
Go-to-market motion3 records
Distribution channels5 records
Marketing channels5 records
GREWUS product offering
Product offeringCore offering
GREWUS develops and manufactures acoustic signal generators (electromagnetic and piezoelectric buzzers, loudspeakers, AVAS sound modules for electric vehicles, PeTer backup alarms, MEMS microphones) and haptic components (voice coil actuators, haptic measurement devices, evaluation boards, demo drivers). The company serves automotive OEMs, commercial vehicle manufacturers, white goods, gaming, consumer electronics, and medical technology industries with 100% in-house production from its BeStar Holding parent company's six production plants, producing over 30 million components per year.
Product overview
GREWUS GmbH offers a portfolio of acoustic and haptic components and measurement solutions for the automotive, commercial vehicle, white goods, gaming, consumer electronics, and medical technology industries. The product portfolio comprises acoustic signaling devices including the PETER Backup Alarm with third-octave noise technology and the AVAS Sound Module for electric vehicle compliance, alongside MEMS microphones for various applications. The haptic lineup includes the ArFi and ArFi Handheld measurement devices for quantifying vibrotactile feedback, the HapForce actuator series in three sizes for different power requirements, the HEBO evaluation board for prototyping, and the Demo Driver for flexible signal generation. All products are customized solutions developed and manufactured in-house since the company's founding in 2007.
Differentiator
Problem solved
Functional benefit
Products and services
- PETER Backup Alarm Reversing alarm system for commercial vehicles using third-octave noise technology that enables better localization, reduced noise pollution, and dynamic volume control through automatic environment analysis with configurable tone, volume, and timing parameters.
- AVAS Sound Module Acoustic Vehicle Alert System for hybrid and electric vehicles as required by EU regulations since July 2019, making vehicles audible at low speeds with customizable CAN bus interface and brand-specific sound design capabilities.
- MEMS Microphones Micro-Electro-Mechanical Systems microphones featuring compact design, high sensitivity, low power consumption, and robustness against humidity, temperature, and electromagnetic interference, supporting digital interfaces including I2S and PDM.
- ArFi (Artificial Finger) Haptic measurement device designed to quantify vibrotactile and acoustic feedback using an accelerometer and a load cell to measure surface vibrations, intended for prototyping, quality control, and analyzing haptic designs, with touchscreen interface and Wi-Fi connectivity.
- ArFi Handheld Compact, portable haptic measurement device optimized for field use outside laboratory settings that quantifies vibrations and forces using a probe with load and acceleration sensors, with data visualization via touchscreen and USB/Wi-Fi export.
- HapForce Actuators Voice coil actuator series in three sizes (HapForce 1, HapForce 2, HapForce Ulti) delivering haptic feedback for automotive, gaming, consumer electronics, and industrial applications by converting electrical signals into precise mechanical vibrations.
- HEBO Haptic Evaluation Board Advanced tool for creating and testing haptic feedback systems that supports multiple actuator types including LRAs and voice coils, with touchscreen interface and signal customization (amplitude, frequency, duration) and WAV file import/export without requiring programming expertise.
- Demo Driver Flexible audio system for haptic applications featuring two independent output channels, 12-bit DAC, Class-D amplifier, and C programming compatibility with Arduino library integration, supporting SD card WAV playback and OLED display for signal visualization.
Quantifiable outcome
- 30+ million components produced per year
- +2 more outcomes
Companies that use GREWUS
Customer profileNamed customers1 record
Segments5 records
Ideal customer profiles4 records
GREWUS technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
GREWUS partnerships and signals
Strategic signalPartnerships
14 partnerships are on record, tiered core and minor.
- Redtree Solutions Ltd.coreStrategic partnership announced in April 2025. Redtree Solutions is the largest Manufacturer Representative company in semiconductor and electronic components with over 45 employees covering European countries, Middle East, and North America. They have hundreds of active key accounts and will help develop strategic business in defined territories and connect customers with GREWUS technologies.
- BeStar HoldingcoreGREWUS is part of BeStar Holding which has over 1000 employees and six own production plants. BeStar provides manufacturing capabilities and operates as a global production partner for GREWUS.
- Haptics Industry ForumminorOrganization focused on standardization of haptics. GREWUS participates in this industry forum to contribute to and benefit from haptic standardization efforts.
- Haptics AllianceminorOrganization focused on immersive HMI solutions. GREWUS collaborates with the Haptics Alliance for industry development and knowledge sharing.
- EuroHaptics SocietyminorCommunity of academics in the haptics industry. GREWUS engages with academic researchers for scientific advancement and innovation.
- TUHH (Hamburg University of Technology)minorScience and research partner. Prof. Dr.-Ing. Thorsten A. Kern from TUHH has collaborated with GREWUS on vibrotactile actuator design concepts.
- Innovobot LabsminorIntegration partner. Daniel Shor from Innovobot has spoken at GREWUS conferences about haptics language and design rules.
- SDU Denmark (University of Southern Denmark)minorAcademic research partner for haptics development and innovation.
- IEEEminorGlobal technology organization for advanced technology development. GREWUS is associated with IEEE for human advancement through technology.
- DVN (Driving Vision News)minorAutomotive interior industry news and expertise partner. Supports GREWUS visibility in automotive interior market.
- Infinitus TradingminorDistributor partner for GREWUS products. Located in Germany, they distribute components in specified territories.
- MkiminorRepresentative partner for GREWUS products in the German market. Represents the company and its products to customers.
- DigiKeyminorGlobal electronic component distributor offering GREWUS products for broader market access.
- Haptics ClubminorCommunity and networking partner for podcasts and live events in the haptics industry. Supports industry collaboration and knowledge sharing.
Scale indicators5 records
Recent moves6 records
Expansion highlights5 records
GREWUS competitors and assessment
Company assessmentDirect peers
- TDK (InvenSense): TDK's InvenSense division supplies MEMS microphones and piezoelectric haptic actuators (PiezoHapt) directly competing with GREWUS's MEMS microphone and HapForce actuator product lines for automotive, consumer electronics, and gaming customers.
- AAC Technologies: Global leader in acoustic components, MEMS microphones, and haptic actuators serving smartphones, wearables, and automotive—overlapping directly with GREWUS's automotive and consumer acoustic/haptic portfolio.
- Knowles Corporation: Specialist in MEMS microphones and acoustic components with strong automotive and hearing-health presence, competing head-to-head with GREWUS in MEMS microphones and acoustic signal generators.
Broad incumbents
- Goertek: Large Chinese acoustic and MEMS components manufacturer with significant automotive, AR/VR, and consumer electronics exposure—competes with GREWUS on acoustic components while operating at meaningfully larger scale.
- Cirrus Logic: Semiconductor specialist in audio signal processing and haptic drivers; competes with GREWUS's acoustic component portfolio while supplying complementary low-level silicon for haptic systems.
- Continental AG: Global automotive Tier 1 with broad interior electronics, acoustic, and HMI offerings; competes as an incumbent platform supplier to OEMs that GREWUS serves as a Tier 1/2 acoustic and haptic specialist.
- STMicroelectronics: Major automotive semiconductor and MEMS supplier offering MEMS microphones and automotive-grade ICs that overlap with GREWUS's MEMS microphone line and serve the same Tier 1 automotive customers.
- Murata Manufacturing: Japanese electronics components giant producing MEMS sensors, piezoelectric devices, and acoustic components with significant automotive supply; competes broadly with GREWUS in automotive-grade acoustic and haptic components.
Emerging players
- Boréas Technologies: Early-stage specialist in low-power piezoelectric haptic technology for wearables and automotive HMIs—emerging direct competitor to GREWUS's HapForce piezo and voice coil actuators with similar technology overlap.
- Hap2U: European startup commercializing ultrasonic haptic technology for surfaces and displays—emerging adjacent competitor in the broader haptic feedback category where GREWUS competes with voice coil and piezo solutions.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
GREWUS social profiles
Digital presenceGREWUS compliance and trust
Trust signalCompliance6 records
GREWUS financial estimates
Financial estimateRevenue estimate
Valuation estimate
GREWUS leadership team
Management profileNumber of profiles
Profiles3 records
GREWUS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
GREWUS M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about GREWUS
What does GREWUS do?
GREWUS develops and manufactures acoustic signal generators (electromagnetic and piezoelectric buzzers, loudspeakers, AVAS sound modules for electric vehicles, PeTer backup alarms, MEMS microphones) and haptic components (voice coil actuators, haptic measurement devices, evaluation boards, demo drivers). The company serves automotive OEMs, commercial vehicle manufacturers, white goods, gaming, consumer electronics, and medical technology industries with 100% in-house production from its BeStar Holding parent company's six production plants, producing over 30 million components per year.
Is GREWUS a public or private company?
GREWUS is a private company. It is classified as corporate owned and is currently operating.
When was GREWUS founded?
GREWUS was founded in 2007. It employs 1,001 to 5,000 people.
Where is GREWUS based?
GREWUS is headquartered in Hamburg, Germany, in the Europe region.
How does GREWUS make money?
Three revenue lines are on record. Acoustic Components Sales are the primary driver. The others are haptic Components Sales and customized Solutions and Engineering Services.
Who are GREWUS's main competitors?
Direct peers on record are TDK (InvenSense), AAC Technologies and Knowles Corporation. Broad incumbents are Goertek, Cirrus Logic, Continental AG, STMicroelectronics and Murata Manufacturing. Emerging players are Boréas Technologies and Hap2U.
Does GREWUS have an API?
No public API is recorded for GREWUS.
What industry is GREWUS in?
GREWUS's product category is Automotive Acoustic and Haptic Components. Its primary akta.pro industry code is IMACAJAC, Automotive ECUs/Control Modules & Embedded Electronics Manufacturing, with a secondary code of IMACAJAG, Automotive Instrument Clusters, Displays & HMI Electronics Manufacturing. Its NAICS code is 33531 and its SIC code is 3600.