macOSPosterGrid
Turn a favourite photo into a wall-sized poster with an ordinary A4 printer.
Available on the App StoreOne-time purchase · US $2.99
SEISHIN TEAM · Independent software
Small tools. More things done.
Print a bigger poster, organize your own music, transfer files or watermark images. Find your next app through real demonstrations.
Independent software · HU / RO / EN demos
PosterGridA larger poster. Ordinary A4 paper. ↗
Mac / iPhone / iPad
All ↗Find your next everyday tool
Apps for specific jobs, with a direct route to the store.
macOS
macOSMelodyBox for Mac
A dedicated home for your own music: playlists, artwork and a compact Mac player.
Available on the App StoreOne-time purchase · US $2.99
macOSCargoPane
Your local folder and FTP server, side by side in one focused Mac workspace.
Available on the App StoreOne-time purchase · US $4.99
macOSFlowMark
Make your images recognisable with your name, an attribution line or a logo.
Available on the App StoreOne-time purchase · US $2.99
US App Store, October 28, 2026. Local prices may differ; the store shows the current price.
SEISHIN TEAM
Practical guides. Ready-to-use examples.
One task, a few steps and our own sample images.
PosterGrid · Mac
An A2 poster from A4 sheets: prepare your PDF
Check the PDF first. See the page layout and overlap before using any paper or ink.
Read the guide ↗FlowMark · MacWatermark multiple images while keeping your originals
Start with two test images. Set up the text, then inspect the actual files after the first export.
Read the guide ↗Simply
How can we help?
Most clients do not need just a “website” or an “app”. They need a business workflow that works better. That is why we start from the real process.
Web + admin
Website + admin
A website you can manage later: text, images, services, references or quote requests.
Details→App + backend
Mobile app + web backend
iOS and Android app with central content management, support pages and launch preparation.
Details→Custom system
Custom software / internal system
Digital tools for orders, clients, records, appointments or other internal workflows.
Details→Multi-device + offline
Cross-platform, offline-ready system
Installable web-based solution for multiple devices, usable without internet and syncable when connection returns.
Details→Seishin Team SRL
Who is it for?
For service businesses, educators, restaurants, media teams, app publishers and entrepreneurs who need an existing system cleaned up.
The goal is not a complicated technical system. The goal is a clearer, faster and easier-to-manage business workflow.
Portfolio
View referencesSelected work to build trust on
The references are not just visuals: websites, apps, admin panels and own systems in real use.
Featured references
SightWall product website and macOS software
A product presentation website and custom macOS software working together for RTSP camera monitoring, with local operation, low latency and unique technology-driven implementation.
Sepsi Rádió website and mobile app system
The Sepsi Rádió website, iOS app and Android app work as one shared system: live radio, shows, current and next track, music log, news portal, polls, in-app messages, games and push notifications.
Seishin Academy closed student system
Multilingual academy website and closed internal student system with online tests, downloads, training calendar, chat wall, forum, internal community features and tuition management.
Seishin Massage mobile app and client system
iOS and Android apps connected to a web-managed system for bookings, digital passes, notifications and client-facing modules.
Restaurant ordering system demo
Multi-kitchen restaurant ordering demo with one shared cart, offers, service locations, confirmations, reception view and admin panel.
Karcsi konyhája
Recipe website and gastroblog with homestyle recipes, articles, videos and an ingredient-based recipe recommendation feature.
Sepsi Rádió digital system
Radio website and mobile apps with live stream, news and community features.
R
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How we work1 2 3
How do we start?
You explain the goal
You do not need a finished technical brief. We need to understand what problem you want to solve.
We shape the system
We decide whether you need a website, app, admin, software or a combination of them.
We build and hand over
The result is made to be used and expanded later.
Request a quote
Request a quoteLet’s discuss what you need
Briefly describe the system you want, which devices it should work on and what you want to simplify in your business.
Seishin Team SRL
Let’s discuss your project
Whether you need a website, mobile app or admin system, request a custom offer and let’s build it together.
☎Phone+40 742 880 888✉Emailinfo@seishin.team
⌖Head officeSfântu Gheorghe, Covasna County, Romania
▣Company details
CUI29043905
Trade Register No.J14/242/29.08.2011
D-U-N-S503402528