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jCode

Independent productsFitnessOpen source

Products created
and maintained
by jCode

jCode designs, builds and maintains its own products. WorkoutGen generates personalised workouts that adapt after every session; Ragmir is open-source agentic RAG for coding agents.

Explore WorkoutGenExplore Ragmir
WorkoutGen App Store screenshots of a demo account, side by side on black: real-time AI adaptation, the AI coach's progress analysis, a workout video with the coach, the athlete profile dashboard and exercise alternatives
Use cases section of ragmir.com: four workflows, and a diagram where Claude Code or Codex searches the project documents with Ragmir before changing code and tests
Three WorkoutGen screenshots: the program map with its training cycles, the week schedule with completed workouts, and the muscle focus editor with the chest selected

01 / 03WorkoutGen

Home page of workoutgen.app: the title “Generate your program. Track your lifts. Progress with AI.”, the free program button, the App Store, Google Play and Microsoft Store badges, and a phone showing a squat set in the app

01 · Fitness app

WorkoutGen

A personalised workout generator: your program, adjusted after every session and designed to learn from its members.

51,000+ members, October 2026 · 9 languages · Free plan

Explore WorkoutGenVisit WorkoutGen
Home page of ragmir.com: the title “Agentic RAG. For developers. With your sources.”, install and use case buttons, and a terminal demo where a coding agent adds project documents to Ragmir

02 · Open-source developer tool

Ragmir

Open-source agentic RAG: your coding agents search your code and documents locally and get cited passages.

Open source · npm · MCP server

Explore RagmirVisit ragmir.com
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Product management

From an idea to a product people use

jCode runs its products the way an experienced product owner would: product management from discovery to release, prioritised by value, measured after launch and maintained over time. The same discipline goes into client work.

  1. Start from a problem worth solving

    Each product starts from a need seen in the field: planning training for WorkoutGen, cited context for Ragmir.

  2. Set a vision and measurable outcomes

    Who each product serves and what success looks like, then each release judged by its outcomes, not its features.

  3. Validate before building

    Ideas meet users before they are built, and a state-certified coach validated WorkoutGen's program engine.

  4. Prioritise and ship in small steps

    A backlog ordered by value, acceptance criteria on each item, and small reversible releases on four platforms.

  5. Measure, listen and iterate

    Usage analytics, store reviews and support requests shape the next version, down to the free and Max plans.

  6. Build for the long run

    Tests, documentation and monitoring come with the product: 547 test files in WorkoutGen (October 2026), Ragmir open source.

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Contact

Let's talk about your project.

Tell me what you want to build or improve, your budget and your target date.

  • Fully remote
  • English or French
  • France · UK · US
Describe your project on MaltAsk a question on LinkedInDownload my CV
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FAQ

About jCode's products

Who created these products?

Jean-Baptiste Thery, through jCode. He created Ragmir and co-founded WorkoutGen, whose entire technical side he built as sole technical owner.

Can I use WorkoutGen on my phone?

Yes. It is on the App Store, Google Play and the Microsoft Store, and installs as a web app in compatible browsers.

Is Ragmir open source?

Yes. Its code is public on GitHub and its package on npm, under AGPL-3.0-only from version 3, with a separate commercial licence. Earlier releases keep their published licence.

Can I connect Ragmir to my existing tools?

Yes, through its command line, its TypeScript API or its MCP server. A connected tool that receives passages applies its own data policy.

Do these products use AI?

Yes. WorkoutGen's AI coach suggests loads, analyses progress and adjusts training after every session. Ragmir is agentic RAG: it gives coding agents such as Claude Code and Codex cited passages from your code and documents.

Can jCode develop a product for my business?

Yes. The freelance services cover web and mobile app development, the takeover of existing applications, AI features like WorkoutGen's, MCP servers like Ragmir's and technical consulting, fully remote. Share your needs through Malt or LinkedIn.