dimensionfour.io

What It Is

Dimension Four is a headless IoT platform positioned as a “complete IoT backend.” It helps companies ingest, transform, store, and expose sensor data from different sources through a unified GraphQL API. Its core goal is to reduce data silos, allowing product teams to move from prototype to commercial deployment without having to build a complex IoT backend themselves.

Core Capabilities

The platform supports multiple protocols and connection methods, including MQTT, HTTPS, UDP, GraphQL, as well as LoRaWAN, NBIoT, 5G, and other connectivity scenarios. Once data is ingested, it can be transformed from raw sensor readings into usable information. Developers can query data through a self-describing GraphQL API, receive signals via real-time subscriptions, and use the Aggregation API for summary analytics. Dimension Four also provides Webhooks and intelligent alerts, with integrations for email or SMS services. It also offers open-source components such as charts, counters, and maps for quickly building dashboards. For machine learning use cases, the platform supports exporting and accessing time-series data through S3-compatible storage.

Pricing and Service

Pricing is relatively transparent: Free is suitable for testing and prototyping, with up to 10 sensors, 100,000 API calls, and 100MB of storage; Professional costs $299/month, supports up to 100 sensors, includes 1 million API calls and 1GB of storage, and comes with a Professional SLA plus Slack support; Enterprise is custom-priced and supports unlimited sensors, custom quotas, dedicated Slack engineering support, professional services, and an invitation to an advisory board. The subscription commitment period is 30 days and can be canceled. Additional API calls are billed per 1 million calls: $89 on Free and $59 on Professional.

Pros and Cons

Its strengths are broad protocol coverage and a clear API-oriented approach. GraphQL, Webhooks, the Aggregation API, and S3 export together form a relatively complete IoT data pipeline. The free tier lowers the barrier for validation, while the Enterprise plan appears to offer strong support. The downsides are that public materials do not disclose common enterprise procurement details such as security certifications, compliance, encryption, or data residency; it is also unclear whether private deployment or self-hosting is supported. Storage quotas on Free and Professional are limited, and the actual cost of Enterprise requires discussion with sales.

Who It’s For and Access from China

It is suitable for IoT product companies, industrial digital twin teams, smart city/municipal projects, and developer teams that need to quickly validate sensor-data applications. Access from China is not mentioned in the available text, and payment methods are not disclosed. For production environments targeting mainland China, it is worth also evaluating localizable options such as Alibaba Cloud IoT Platform, Tencent Cloud IoT Explorer, EMQX, and ThingsBoard.