Real decisions, real trade-offs. A journal of building the fashion operating system from Vienna.
We opened the Test Flight last Tuesday. Not to everyone. We reviewed every application manually and let in the first cohort of thirty-something people: a mix of stylists, designers, one boutique retailer from Vienna, and a handful of creators who found us through Instagram.
The good: people got the Digital Twin immediately. Nobody needed an explanation. They just started building their identity and the behaviour was exactly what we hoped. Try a look. Save it. Tweak it. Try again.
The stylists in the cohort went straight to Booking Manager, which we honestly thought would be a secondary feature in the first week. Two of them had client appointments booked through the platform within 48 hours. That told us something about where the real pull is.
We are moving Booking Manager up in the priority queue. It was planned as a Phase 2 focus but the data from the cohort is too strong to ignore. The creative professional use case is pulling harder than the consumer use case right now, which is worth paying attention to.
Three bugs worth mentioning: the try-on session timeout was too aggressive at 15 minutes. We pushed it to 45. The size selector on mobile was not respecting safe-area insets on newer iPhones. Fixed. And one edge case in the cart where removing an item while the panel was animating caused a silent state corruption. That one took us a day to reproduce reliably.
Next week: cohort two. We are doubling the size and expanding to include a brand for the first time.
We decided FSHNiSTA needs its own merch. Not because we need revenue right now, but because the store itself is a product demo. Every visitor who buys a hoodie experiences the commerce layer firsthand. That is worth more than any feature description we could write.
The technical work this week was mostly the cart system and Stripe integration. We went with Stripe Checkout for the MVP because it handles SCA requirements under EU PSD2 without us needing a backend. One function call, a redirect, done. We will build a custom checkout experience when volume justifies it.
Product photography spec: 800x1000px portrait, 4:5 ratio, clean background, subject filling 70% of frame. We set this as a hard standard before shooting anything. Inconsistent product images are the fastest way to make a luxury store look cheap.
The cart state management. We wanted cart to persist within a session but not across sessions, so sessionStorage was the right call. The edge case nobody thinks about: what happens when someone opens two tabs? The cart badge gets out of sync because sessionStorage is tab-isolated in some browsers. We added a storage event listener to sync across tabs. Small thing. Took three hours.
The store is live in the site. Eight products: hoodie in three colourways, coach jacket, essential tee, golf polo, knit jumper, cap, shorts, bomber. All FSHNiSTA branded. Photos are placeholder until the shoot is done.
The hardest thing about building a platform is that its value is proportional to who is on it. The Digital Twin is more useful with more brands. The Map is more useful with more stores. Creator content is more compelling with more products to link to. Everything depends on everything else.
You cannot launch everything simultaneously. You have to pick an entry point and build outward from it. We spent most of this week getting explicit about what that entry point is.
Stylists, photographers, models, designers. They are underserved by every platform they currently use. The friction in their workflow is genuine and solvable with what we already have. A stylist who can take bookings, show their portfolio, and get discovered on one platform has an immediately better working life. That is a real value proposition that does not depend on network effects to deliver.
Build features that are valuable to a single user before they have any followers. If a tool only works at scale, it is not the right tool to ship first. The Booking Manager, the portfolio system, the Map Discovery module all clear this bar. The social discovery features do not, so they come later.
This framework has been useful for prioritisation arguments. When someone suggests a feature, the first question is now: is this valuable to one person on day one? If the answer is no, it goes in the backlog with a note about what threshold it needs before it makes sense to build.
Most companies build in private and announce when something is ready. We considered that. The problem is that "ready" is a moving target and announcing a finished product means you learn nothing from the people who would have shaped it during development.
So we are building in public. Not livestreaming our git commits, not narrating every meeting. But publishing a weekly entry about what we decided, what we built, what broke, and what surprised us. The people who read this are exactly the people we want on the platform.
The short version: the operating system for the global fashion industry. The longer version requires understanding what is broken about how fashion works today. Every player in the industry: consumers, creators, brands, retailers, designers, stylists, photographers, models, beauty professionals, media, builds on a completely separate stack. Nothing talks to anything else. The consumer who tries on a garment in a brand's app cannot take that data to the next brand's app. The stylist who builds a portfolio on one platform cannot book appointments through it. The model who licenses their image does it through a management company that takes forty percent.
If you build the infrastructure layer that connects all of these players, the value compounds in every direction. The consumer's Digital Twin gets more useful as more brands integrate. The creator's affiliate earnings get more transparent as more storefronts connect. The stylist's discovery improves as more consumers use the Map. This is what a platform is supposed to be. FSHNiSTA is the first attempt to build it specifically for fashion.
We are based in Vienna. The city was a deliberate choice: engineering talent is strong, the startup ecosystem is underrated, and we are geographically centred for the European markets that matter most to fashion. We registered FSHNiSTA GmbH here in 2024 and have been building since.
This journal will be updated every week. Some weeks will have more to say than others. The goal is honesty about what the build actually looks like, not a highlight reel. If you want to follow along or get in touch, the waitlist is open.