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12 of Spades is the personal freelance software and AI expert service site of Johannes Herrmann. It is positioned to provide businesses with AI and large language model applications, cloud architecture, full-stack development, and AI training. It is not a standardized developer tool or SaaS in the traditional sense, but instead delivers software solutions through consulting or contract-based projects.
The website highlights three main service areas: AI Development, Cloud Architecture, and Full-Stack Development. Its AI services cover GPT-4, Claude, Gemini, LangChain, chatbots, and complex AI workflows. The cloud offering emphasizes AWS, Azure, DevOps, microservices, serverless, and container orchestration. Full-stack development includes React, Angular, Node.js, TypeScript, React Native, and more. Its case studies span smart manufacturing, IoT, healthcare, tax software, enterprise process digitization, test enhancement, and AI automation, with a fairly comprehensive set of technical tags.
The main content does not disclose public pricing, packages, or payment methods. The training section does state workshop durations: AI Low Hanging Fruits runs for 1–3 days, while the AI as a Tool strategy training lasts 0.5–1 day, but consultation is still required. For custom development projects, delivery is likely based on requirements assessment and project-specific quotations.
The advantage is relatively strong transparency around project experience: it lists 23 projects, 242 technologies, 33 frameworks, 18 partner companies, and 20 years of experience. Its technical coverage ranges from front-end development to cloud, testing, IoT, and LLM integration, making it suitable for complex enterprise scenarios. The drawback is the lack of standardized product information: there is no public API/SDK, documentation center, SLA, price list, or trial entry point, and it is not possible to assess how ongoing support is handled.
It is suitable for European or international enterprise clients that want to quickly validate AI use cases, build enterprise-grade cloud platforms, modernize microservice architectures, develop web or mobile applications, or provide AI training for their teams. If users are looking for an out-of-the-box developer tool, low-code platform, or self-hostable software, the information on this website is not sufficient for direct product selection.
The crawled content does not provide information about availability, ICP filing, nodes, or mirrors for access from China, so the quality of access from mainland China cannot be determined and is marked as unknown.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on 12ofspades.com official site.
12ofspades.com is an Germany AI Apps provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach 12ofspades.com directly.