Modern websites
Showcase sites, portfolios, platforms — fast, responsive and SEO-optimized. A design that looks like you and turns visitors into clients.
- 100% custom design
- Performance & SEO
- Easy-to-manage CMS
Digital agency · Based in Switzerland 🇨🇭 · Clients worldwide
We design websites and custom apps that make a difference.
SEFF Studio turns your ideas into fast, elegant digital products built to convert. From the first pixel to launch — and beyond.
0%Custom-built
0Dedicated contact
0hMax response
01 — Services
Everything you need
to exist online.
Custom apps
Web and mobile applications built around your business. Internal tools, SaaS platforms, dashboards — we develop exactly what you need.
- Web, iOS & Android
- Scalable architecture
- Integrations & APIs
E-commerce
Online stores that actually sell. Smooth checkout, secure payments (Twint, Stripe, PayPal…), stock management and integrated logistics.
- Optimized checkout funnel
- International payments
- Multi-language & multi-currency
Branding & Design
Visual identity, logo, brand guidelines, UX/UI design. A consistent, memorable brand image — from print to digital.
- Brand identity
- Design systems
- Interactive prototypes
SEO & Growth
Being online is good. Being found is better. Organic search, performance, analytics and content strategy to boost your visibility.
- SEO audit & optimization
- Core Web Vitals
- Tracking & reporting
Maintenance & Support
We don't disappear after launch. Hosting, updates, security, new features: your product stays fast, safe and up to date.
- Swiss hosting 🇨🇭
- Backups & security
- Continuous improvements
02 — Demos
Don't take our word for it.
Try it.
Four interactive demos, designed and built end to end by our studio. Click, filter, book, check out — everything works.
Fictional brands created for demonstration. Your project could be next. Let's talk →
03 — Process
Simple, transparent,
efficient.
-
01
Discovery
We listen, ask questions and get to know your business and goals. The first call is free, with no strings attached.
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02
Design
Mockups and interactive prototypes. You see and approve exactly what your product will look like before a single line of code.
-
03
Development
Clean code, modern technologies, regular progress updates. You follow the project in real time — no surprises.
-
04
Launch & beyond
Go-live, training, then long-term support. Your product keeps growing with your business.
04 — The studio
Swiss precision,
global reach.
SEFF Studio is based in Bussigny, Switzerland, and you can tell by the way we work: rigor, reliability, obsessive attention to detail. And since everything can be done remotely, we work with startups, SMEs and freelancers in Switzerland and abroad.
Small team, high standards: every project is handled end to end by the people who actually build it. No middlemen, no opaque outsourcing — just work done right, delivered on time.
🇨🇭 Swiss qualityRigor, punctuality, data hosted in Switzerland on request.
🌍 100% remote-friendlyVideo calls, online tracking, continuous delivery — wherever you are.
⚡ Truly responsiveReplies within 24h, one direct and dedicated contact.
🔒 ConfidentialityNDA on request. Your ideas and your data stay yours.
05 — FAQ
Frequently asked
questions.
Answers to the questions we hear most often. Something else on your mind? Write to us.
How much does a website or an app cost?
Every project is different: the price depends on the number of pages, the features and the content. After a free first conversation, we send you a detailed, no-obligation quote — so you know exactly what you're paying for before we start.
How long does it take?
A showcase website usually takes a few weeks; a custom app or an online store, more like a few months. The schedule is set from day one, with sign-off steps at every phase.
Do you work with clients outside Switzerland?
Yes. We work remotely with clients in Switzerland and abroad: video calls, online tracking and regular demos, wherever you are.
Can you redo an existing website?
Yes: full redesign, a modernised look, better speed or better search rankings. We start from what you have and keep what works.
What happens after launch?
We stay available for maintenance, updates and new features. You keep a direct contact who knows your project.
Do you take care of hosting and the domain name?
Yes, if you'd like: we set everything up for you, with hosting in Switzerland on request.
06 — Contact
Got a project in mind?
Let's build it.
Tell us about your idea in a few lines. We'll get back to you within 24h with a first honest take — free and with no strings attached.
✉ info@seffstudio.com
📍 Bussigny, Switzerland · Available worldwide
🕑 Reply within 24 business hours