Djuradj Djuric

Belgrade

Artifact 05 · Layer 01 · 2026

Mystor

Learn it. Plan it. Build it. Sell it.

Role
Founder & sole engineer
Year
2026
Status
Live
Built with
Next.js · NestJS · MongoDB · Stripe Connect · Cloudflare
mystorapp.com
Mystor home page: the platform for people who build

01

The problem

People who build things learn on YouTube, plan on paper and have nowhere to sell what they know.

02

What I built

A platform in three parts: creator-led project guides sold through Stripe Connect, fourteen free planning calculators, and estimating software that turns a quote into a proposal for solo trades. NestJS microservices behind a Next.js front end, with Cloudflare in front.

03

The hard part

Money moving between three parties. Destination charges, a flat platform fee, creator payouts and subscriptions all had to work together in Stripe.

04

Where it is now

Live at mystorapp.com since May 2026, designed, built and run by me.

Next artifactSolSea One of Solana's first NFT marketplaces. 2M+ users.
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~/field-notes.log

Field notes

What I'm shipping, logged like a dig.

  1. Portfolio

    Rebuilt this site as a dig: raw Three.js strata, a trowel cursor and case studies you brush clean.

  2. Cognios

    Learners can now take a tutor in their own language. Lessons translate end to end, Serbian included.

  3. ZASAD

    Reworked how offline garden tasks sync when the phone reconnects.

  4. Cognios

    3rd place in the Superteam Balkan track of Colosseum's Crypto World's Fair hackathon.

  5. ZASAD

    Every crop page now lists the agronomic sources behind its advice.

  6. Cognios

    A new tutor-generation engine: freeze the evidence, plan, write, verify, repair.

You found the Lar Familiaris

In Roman homes, the Lar guarded the family and its hearth. Here he guards the portfolio. Very few people dig this deep.