I turn ideas into real products.
Web apps, physical prototypes, online stores and original products, designed and built by me, from first idea to working reality.
Open to a full time or founding role, client work, and partners on upcoming projects.
Products I've taken from idea to launch
Live and shipped
7
Web appLiveNewOffices
A search-first marketplace for premium office space in Spain: 455+ verified offices across 9 cities, zero commission, straight to the owner.
Web appLiveElevate Quiz
Build a polished quiz in minutes, ready to run live or print out, with no design skills required.
AI appLiveJobbkompassen
An AI job search that matches your real experience to live roles, explains why each one fits, and drafts tailored applications you can back up. Proof, not bluff.
AI appLiveFyndRadar
An AI radar for second-hand deals: it values any item from what it has really sold for, then flags the listings priced well below.
Web appLiveEarthNow
A cinematic 3D globe you spin to drop into live views of streets, coasts and city nights happening right now.
GameLiveOrdspelet
A slick, neon take on the classic word game Ghost: add a letter, never finish the word, and outlast AI opponents or your friends.
Board gameLiveYrkesproffset
A physical quiz card game about Sweden's professions: 120 jobs, 360 questions, 6 categories, with every card illustration generated using AI.
Early and in progress
6
HardwarePrototypeSeeking a co-builderGyroSpinner
A self-developed mechanical product concept: a fidget spinner with an internal gyroscope, taken from idea to 3D-printed physical prototypes.
Web appPrototypeWedding Planner Studio
A studio-grade wedding planner with a 3D venue preview: walk your ceremony, seat your guests, and see the whole day before it happens.
AI appPrototypeFootball AI Insights
An AI tool that finds real betting value in Allsvenskan football: value plays with clear reasoning, and the discipline to sit out when there is no edge.
PrintPrototypeNisse Magic Co
A free, printable library of Swedish 'nisse' magic: letters, door signs, advent doors and decor on A4, plus a personalised-letter maker.
E-commerceIn progressAnkan's Studio
A warm e-commerce brand for handmade, made-to-order knitwear: you describe the piece, Ankan knits it, and every one is unique.
GameConceptShadow City
A gritty, text-based mafia browser game: no 3D, no fluff, just districts to run, jobs to pull, and the itch that someone out there is earning more than you.
What I can do, proven by the work
Build & ship, solo
Idea to a live product on my own: design it, build with Lovable and Codex, wire the data, deploy, iterate. No team required.
AI & prompt engineering
Prompt chains that classify, value and generate, with answer-checking and a human in the loop so the output is always usable.
Rigor and detail
I work in a structured way, with clear specs, tested flows and the small details handled, so what goes live holds up in real use.
Range across mediums
Not just web apps: a printed board game, a 3D-printed hardware concept and an e-commerce brand, each built end to end.
Claude
ChatGPTGPT Image
Nano Banana 2
Codex
Lovable
Next.js
Vercel
Supabase
GitHub
Xcode
Unity
Three.js
Figma
Shopify
Bambu LabFrom idea to finished product
I start from the problem, not the technology. From there I build the simplest honest version early, so you see a real product instead of a document, then refine it from there. AI lets me work quickly without cutting corners on the details.
I am open to a full time role, client work, and partners on a few upcoming projects. Working with me is calm and direct, honest about what AI does well and clear about what it cannot, with a result you can stand behind. If it is a good fit, I would like to hear about it.
Tell me what you are building, and I will tell you honestly how I can help.
Get in touchProblem before tools
I understand what actually needs solving before deciding what to build or which tools fit.
Something real early
You see something you can click early, and I adjust it from real use, not guesswork.
Clear the whole way
You always know where things stand, what is done, and what comes next.
Say hello, whatever brought you here.
Maybe you are hiring, maybe you have a project in mind, or maybe you just have an idea you want to test. All three are genuinely welcome. Write a line or two, and I will read it properly.
- Hiring a builder. A full-time role, a spot on your team, or a founding seat.
- Working together. A project, some freelance help, or a longer partnership.
- Just an idea. Even a rough idea is fine. Tell me and get an honest read back.
No newsletter, no sales sequence. Just a real reply from the person who would build it.
Or write directly to johan.ruben.larsson@hotmail.com