Paracausality OS
Version 2026
- Processor
- Espresso, on a continuous loop
- Memory
- Every project we have delivered
- Serial number
- IT04869410615
- DebugThe developers' minesweeperPlay
- Deploy RunnerShip your code to productionPlay
- CompilaFalling code blocksPlay
- VersionsMerge releases up to v1.0Play
- Code SprintType code as fast as you canPlay
- FirewallDefend the server from attacksPlay
- MemoryPairs of our projectsPlay
- SnakeEat the bugs, don't bite your tailPlay
Every game has its own weekly leaderboard.
Arrows or WASD to move · Space to start and pause
Click to check a cell · right-click to place a fix · click a number to check its neighboursTap to check · long-press or use Fix mode to mark a bug
Space, up arrow or click to jump · hold to jump higherTap to jump · hold to jump higher
← → to move · ↑ to rotate · ↓ to go down · space to drop · P to pauseSwipe to move · tap to rotate · swipe down to drop
Arrows or WASD to slide the versionsSwipe to slide the versions
Type the code lines exactly as shown · 60 seconds · speed and accuracy both count
Move the mouse or use ← → · click or space to launchDrag your finger to move · tap to launch
Find the project pairs as fast as you can
Custom iOS and Android app development for businesses
We build apps for phones and tablets, for your customers or your staff. We handle everything: experience design, development, admin panel, publishing on the App Store and Google Play or private distribution to employees.
What apps we build
Customer apps
Services, bookings, orders, direct communication. Like OMNYQR, the QR code virtual intercom.
Staff apps
Checks, checklists, logs and field work instead of paper. Like Simple HACCP.
Apps connected to your systems
Data synced with your business software, website or ERP.
Digital products
Subscription apps to launch on the market, like SyncPaste for Mac, iPad and iPhone.
Features we can build
- Video calls, chat and push notifications
- QR code and barcode scanning
- Offline mode with sync
- Geolocation and maps
- Photos, signatures and PDF documents
- In-app payments and subscriptions
How we proceed
We start with a clickable prototype you can try on your phone before writing code. Then we develop with frequent releases, publish to the stores and keep looking after updates and new OS versions.
Some of our projects
Frequently asked questions
Do you build for iOS and Android at the same time?
Yes. When it makes sense we use cross-platform technology such as Flutter, with one codebase for both; for special needs we build natively.
Do you publish the app on the stores?
Yes, we handle publishing on the App Store and Google Play. Internal apps can also be distributed privately to employees only.
How much does it cost to build an app?
It depends on features, platforms and integrations. After the analysis you get a detailed written quote.
Who looks after the app after launch?
The same team that built it: updates, fixes, compatibility with new iOS and Android versions and new features.
Wallpaper
Wallpapers are animated and generated in code. Your choice is saved in this browser.
Appearance
Starts after 2 minutes of inactivity.
Now and then a bug crawls across the screen. Move the pointer close and squash it.
Dock
Language and sound
Short, subtle sounds when windows open, for notifications and on unlock.
Paracausality OS
The Paracausality Systems website, built as an operating system. Every project is an app, every section a window.
- Company
- Paracausality Systems
- VAT no.
- IT04869410615
- Shortcuts
- Ctrl K to search · Esc closes the front window · right-click the desktop for wallpapers
Book a call
Days with a dot have free slots. We confirm the time by email.
New project
Tell us what the software needs to do. We reply with the right questions or a call proposal.
Mon–Fri 9–18 CET · VAT IT04869410615