macOSSightWall Camera
Keep your camera views together on your Mac, instead of jumping between windows.
Available on the App StoreWhat would you like to make easier?
Apps for Mac, iPhone and iPad. Each product lists its own platform and availability.
All 20 of our App Store products, plus Sonivela and Voxiloom. Products in preparation or development have no active download links.
22 apps
macOS
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
iOS · AndroidSepsi Rádió
Keep the live voice of Sfântu Gheorghe with you, wherever the day takes you.
Available on the App Store
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
iOS · AndroidSeishin Massage
Your next appointment, pass balance and Seishin contacts, close at hand.
Available on the App Store
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
iOSSudokuVault
A proper Sudoku break, without advertising interruptions or an account to create.
Available on the App StoreFree + optional one-time PRO · PRO US $2.99
macOS · iOSSoundTag Mp3 (macOS)
Give the MP3 collection on your Mac the correct song names and album covers.
Available on the App Store
iOSPosterGrid Mobile
Bring your photos off the screen and onto the wall, straight from iPhone or iPad.
Available on the App StoreiOS · macOSSoundTag Mp3 PRO
Fix song titles, artists and artwork across your iPhone, iPad and Mac.
Available on the App Store
iOSMelodyBox Player
Your own music on your iPhone: import it, build a playlist and press play.
Available on the App Store
macOSSparkDisc
When you need a physical copy: burn a data disc or audio CD on your Mac.
Available on the App Store
iOSSeishin Academy
School news, practical sessions and student information, together in one place.
Available on the App Store
macOSMp3Visual: Music Video Maker
Give your audio a visual identity: turn your own music or narration into video.
In preparation
iOSRingCut by Seishin
Make a favourite sound your own ringtone, with a focused trim-and-preview workflow.
In preparation
iOSHandovio: Job Reports
From on-site photos to a client-ready report, in one connected workflow.
In preparation
iOSPatternix Memory
Look at the pattern. Remember the positions. Put it back together.
In preparation
macOSImageLeaf PRO
Browse, choose and prepare your pictures without losing your place among the files.
In preparation
iOSSeishin Flow Teleprompter
Keep your words in view, so you can concentrate on how you deliver them.
Available on the App Store
macOSSonivela
Turn written words into narration, prepared on your own Mac.
In development
iOS · macOSVoxiloom
A digital world in development, giving learning its own voices and characters.
In developmentUS 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 ↗A question about the app?
Tell us the app name, your device and what you need help with.