39 degrees C
39 degrees C is a South Korean mobile streaming technology company that builds the Relay multi-camera broadcasting app and Multicam hardware kits, enabling content creators and field operators to wirelessly connect multiple smartphones for live streaming to YouTube, Facebook, and Twitch.
- Company typePrivate
- Founded2021
- HeadquartersGangneung, South Korea
- Headcount11–50
- GTM typeB2C
- OfferingSoftware
What 39 degrees C does
39 degrees C (legal entity: Thirty-nine Co.) is a South Korea-based mobile streaming technology company founded in Gangneung. The company develops the Relay multi-camera broadcasting platform, a mobile application that wirelessly connects up to four smartphones to function as synchronized camera sources for live broadcasts. The platform supports real-time camera switching, overlay graphics, audio mixing per camera, local recording, and direct streaming via RTMP to YouTube, Facebook, Twitch, and partner platform MAHABET77.
The company has extended its offering with the 39degreesc Multicam Mobile Streaming hardware kit and 39degreesc Multicam Backpack accessory, targeting rugged field use with MIL-STD-810G durability certification, IP68 water and dust resistance, 12-hour battery life, and 5G dual SIM connectivity. Positioning combines consumer content-creator use cases (mobile streamers, live event broadcasters) with tactical/field operator use cases requiring durable equipment.
Revenue mechanics rest on two pillars: a freemium mobile app (free tier with watermark, premium tier via in-app subscription unlocking watermark removal and advanced features) and direct e-commerce sales of physical hardware kits sold under a limited-availability model. Distribution is multi-channel: app stores for software, the company's own e-commerce site for hardware, and an affiliate partnership with MAHABET77 driving Indonesian-language content marketing. Total disclosed funding across rounds is approximately 813,500 USD including a May 2021 seed round of 600 million KRW led by Kakao Ventures and Shinhan Capital, with prior investors including Telecom Infra Project and the TIPS Program.
39 degrees C firmographics
Firmographics- Name
- 39 degrees C
- Legal name
- Thirty-nine Co.
- Website
- https://39degreesc.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- 39 degrees C is a South Korean mobile streaming technology company that builds the Relay multi-camera broadcasting app and Multicam hardware kits, enabling content creators and field operators to wirelessly connect multiple smartphones for live streaming to YouTube, Facebook, and Twitch.
- Ownership category
- akta.pro rank
39 degrees C industry classification
Industry- Product category
- Mobile Live Streaming Software
- NAICS
- Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing (334220), Other Communications Equipment Manufacturing (33429), Audio and Video Equipment Manufacturing (3343)
- SIC
- Radio & Tv Broadcasting & Communications Equipment (3663), Communications Equipment, Nec (3669), Computer Communications Equipment (3576)
- akta.pro primary industry
- Live Streaming & Low-Latency OTT Orchestration (LL-HLS, DASH, WebRTC) (MPAHAJAK)
- akta.pro secondary industries
- Gaming Capture & Streaming Hardware (Capture Cards, Stream Decks) (CRACAOAK), Gaming Networking & Streaming Gear Retail (Routers, Capture Cards, Webcams, Mics) (CRACAFAK)
Keywords
Where 39 degrees C is headquartered
LocationHeadquarters
- HQ city
- Gangneung
- HQ country
- South Korea
- HQ region
- Asia
Markets served
39 degrees C business model
Business model- GTM type
- B2C
- Offering type
- Software
- Cost components
- Technology or R&D, Supply Chain, Marketing or Sales, Personnel, Operations
Revenue model
- Freemium Mobile App: Free basic app version with watermark. Premium features and watermark removal available via in-app purchases. Supports up to 4 camera devices in premium tier.
- Hardware Kits: Sale of physical multicam streaming hardware kits with tactical/ruggedized specifications. Limited units available model suggesting controlled inventory sales.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Pay-as-you-go | Free version with watermark |
| Subscription | Monthly | Premium/Pro tier via in-app purchase |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
39 degrees C product offering
Product offeringCore offering
39 degrees C develops and sells the Relay multi-camera broadcasting mobile app and the 39degreesc Multicam Mobile Streaming platform, which wirelessly connect up to four smartphones into a synchronized live broadcast system with real-time switching, overlay graphics, audio mixing, and RTMP streaming to YouTube, Facebook, Twitch, and partner platforms. The company also sells ruggedized hardware kits (MIL-STD-810G, IP68, 12-hour battery, 5G dual SIM) including the 39degreesc Multicam Backpack for field-based mobile streaming.
Product overview
39 degrees C operates as a mobile streaming technology company offering two core products: the original 'Relay' multi-camera broadcasting app and the newer '39degreesc Multicam Mobile Streaming' solution. The Relay app enables wireless multi-smartphone broadcasting for live streams. The 39degreesc Multicam platform extends this capability with tactical-grade features including military-standard durability (MIL-STD-810G), extended 12-hour battery life, IP68 water/dust resistance, and 5G dual SIM connectivity. The system supports up to 4 connected camera devices simultaneously with integrated live switching, overlay graphics, and audio mixing. Both products stream to platforms like YouTube, Facebook, Twitch, and MAHABET77 via RTMP protocol. The product line targets content creators and operators requiring mobile, multi-camera broadcasting capabilities in challenging environments.
Differentiator
Problem solved
Functional benefit
Brands
- Relay: Multi-camera broadcasting app that allows users to connect multiple smartphones wirelessly for live broadcasts
- 39degreesc Multicam
Products and services
- Relay Multi-Camera Broadcasting App Mobile application that wirelessly connects multiple smartphones for synchronized multi-angle live broadcasts, enabling users to stream to RTMP-compatible platforms without traditional broadcasting equipment.
- 39degreesc Multicam Mobile Streaming App Mobile streaming application for content creators supporting up to four connected camera devices with real-time switching, overlay graphics, audio mixing, local recording, and RTMP streaming to YouTube, Facebook, Twitch, and MAHABET77.
- 39degreesc Multicam Backpack Portable ruggedized carrying solution designed to enable mobile multi-camera streaming setups in outdoor and field production environments.
Companies that use 39 degrees C
Customer profileNamed customers2 records
Segments3 records
Ideal customer profiles2 records
39 degrees C technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
Feature10 records
39 degrees C partnerships and signals
Strategic signalScale indicators5 records
Recent moves5 records
Expansion highlights5 records
39 degrees C competitors and assessment
Company assessmentEmerging players
- OBS Studio: Open-source live streaming and recording software dominant among streamers. Comparable on the core RTMP streaming and scene-switching functionality, though desktop-only and not directly competitive on mobile multi-camera hardware.
- YoloLiv: Portable all-in-one live streaming hardware devices with multi-camera switching, overlays, and direct streaming. Comparable on the hardware-plus-software integrated streaming kit positioning, though focused on a dedicated encoder form factor rather than smartphones.
Direct peers
- Streamlabs (Logitech): Mobile and desktop streaming app suite owned by Logitech. Directly competes in mobile multi-platform live streaming with alerts, overlays, and monetization tools — the closest comparable product to 39degreesc Multicam in the consumer segment.
- PRISM Live Studio (NAVER): NAVER-owned mobile live streaming and camera app with effects, multi-platform streaming, and AR features. Particularly relevant peer given NAVER's Korean roots and overlapping target audience of Asian content creators.
- Switcher Studio: iOS-based multi-camera live switching and streaming app with integrated switching, graphics, and RTMP output. Closest direct functional analog to 39 degrees C's wireless multi-camera orchestration for live broadcast workflows.
Broad incumbents
- vMix: Professional live video production software with multi-camera switching, overlays, and RTMP streaming. Comparable on the live switching and broadcast feature set, though desktop-focused rather than mobile-first.
- LiveU: Established provider of bonded cellular mobile video transmission units for broadcasters and live news. Comparable on the tactical/ruggedized mobile live video uplink use case, though serving primarily professional broadcast rather than consumer creators.
- Wirecast (Telestream): Professional live production and streaming software widely used by event producers, churches, and broadcasters. Comparable on RTMP multi-destination streaming and production overlays, though serving prosumers on desktop.
- SlingStudio (Dish): Wireless multi-camera live broadcasting hub from Dish. Uses a central hub with multiple smartphone/app-based camera inputs, directly overlapping 39 degrees C's wireless multi-camera architecture for live events.
- Epiphan Video (Pearl): Manufacturer of hardware live video production systems (Pearl Mini, Pearl Nexus). Comparable on the integrated hardware-plus-software multi-camera live streaming approach for professional and education segments.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat3 records
Key risks6 records
Key highlights6 records
Customer concentration
39 degrees C social profiles
Digital presence39 degrees C financial estimates
Financial estimateRevenue estimate
Valuation estimate
39 degrees C leadership team
Management profileNumber of profiles
Profiles3 records
39 degrees C funding detail
Funding detailFunding overview
Funding rounds5 records
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
39 degrees C 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 39 degrees C
What does 39 degrees C do?
39 degrees C develops and sells the Relay multi-camera broadcasting mobile app and the 39degreesc Multicam Mobile Streaming platform, which wirelessly connect up to four smartphones into a synchronized live broadcast system with real-time switching, overlay graphics, audio mixing, and RTMP streaming to YouTube, Facebook, Twitch, and partner platforms. The company also sells ruggedized hardware kits (MIL-STD-810G, IP68, 12-hour battery, 5G dual SIM) including the 39degreesc Multicam Backpack for field-based mobile streaming.
Is 39 degrees C a public or private company?
39 degrees C is a private company. It is classified as venture growth investor backed and is currently operating.
When was 39 degrees C founded?
39 degrees C was founded in 2021. It employs 11 to 50 people.
Where is 39 degrees C based?
39 degrees C is headquartered in Gangneung, South Korea, in the Asia region.
How does 39 degrees C make money?
Two revenue lines are on record. Freemium Mobile App is the primary driver. The others are hardware Kits.
Who are 39 degrees C's main competitors?
Emerging players on record are OBS Studio and YoloLiv. Direct peers are Streamlabs (Logitech), PRISM Live Studio (NAVER) and Switcher Studio. Broad incumbents are vMix, LiveU, Wirecast (Telestream), SlingStudio (Dish) and Epiphan Video (Pearl).
Does 39 degrees C have an API?
No public API is recorded for 39 degrees C.
What industry is 39 degrees C in?
39 degrees C's product category is Mobile Live Streaming Software. Its primary akta.pro industry code is MPAHAJAK, Live Streaming & Low-Latency OTT Orchestration (LL-HLS, DASH, WebRTC), with a secondary code of CRACAOAK, Gaming Capture & Streaming Hardware (Capture Cards, Stream Decks). Its NAICS code is 334220 and its SIC code is 3663.