SPDevStudio
Apps • Music Tools • Clean Engineering
Independent studio — Germany

Futuristic, minimal apps —
with a musician's touch.

I build modern mobile apps and music-focused utilities: fast, stable, and crafted to feel premium. From song management to live MIDI control.

Flutter
Android
iOS
MIDI
Music tools
Cross-platform
Apps
3 shipped
Platforms
Android, iOS, Desktop, Web
Focus
Music, Education & Performance

What I do

Focused services with premium execution.

Mobile App Development

Android & cross-platform apps built with Flutter. Prototypes, MVPs, and polished releases.

🎛

Music Tools

MIDI controllers, song managers, sheet editors, and musician workflow helpers for stage and studio.

🧊

Clean Delivery

Local-first architecture, offline-ready, no bloat. Pragmatic engineering with fast iterations.

Products

From restaurant platforms to music tools — software that works.

🍽
Flavor Flow
Restaurant SaaS Platform • v2.2
A complete digital restaurant platform. Online ordering with Stripe payments, table reservations, digital QR menu, coupon & loyalty system, event management, multilingual CMS, blog, customer accounts, and a full admin dashboard with role-based permissions, analytics, and audit logging. Built with Laravel 12 + Vue 3.
Online Ordering Stripe Payments Reservations QR Menu Coupons & Loyalty Event Management Multilingual CMS Admin Dashboard Role Permissions CI/CD Deploy GDPR Compliant 5 Languages
Live Demo — Altes Haus MG ★ Restaurant SaaS
KirivGE Manager icon
KirivGE Manager
Song & Gig Management for Musicians • v1.3.2
The all-in-one app for managing your music life. Songs with lyrics, chords, and sheet notation. Gig scheduling with financials. Repertoires, contracts, PDF generation, YouTube player, file attachments — all stored locally, no account needed.
Song Library Sheet Music Editor Chord Editor Gig Tracker Repertoires Contracts & PDF YouTube Player 23 Languages Offline-first
KirivGE Controller icon
KirivGE Controller
MIDI Arranger Companion for Live Performance • v1.1.0
A live performance companion for arranger keyboard players. 8×8 customizable button grid, 12 banks + 3 favorites, dual mode (Styles & KBD Expressions), and quick-access performance controls — intros, variations, fills, and endings at your fingertips.
64-Button Grid 12 Banks Styles Mode KBD Expressions Intro / Var / Fill / End Sync Controls Button Swap Color-coded UI
AzubiPilot icon
AzubiPilot
IHK Pruefungsvorbereitung fuer Azubis • v1.0.1
Der Pruefungstrainer fuer angehende Fachkraefte. Tausende IHK-Pruefungsfragen fuer verschiedene Ausbildungsberufe, realistische Pruefungssimulationen mit Zeitlimit, detaillierte Statistiken und Lernfortschritt — alles offline, alles lokal, kein Account noetig.
Fragenkatalog Pruefungssimulation Statistiken Mehrere Ausbildungen 100 Fragen gratis Einmalkauf Offline-first

Fun Projects

Side projects built for fun — because coding should be playful too.

🎲
Monopoly Online
Multiplayer Board Game • 5 Rooms • 4 Players
A full Monopoly game playable in the browser. Built from scratch with pure PHP, no frameworks. 5 separate game rooms, real-time AJAX polling, animated SVG game pieces, step-by-step movement, trading, building, and all the classic rules — server-side validated so no cheating possible.
Multiplayer 5 Rooms Animated Pieces Trading Pure PHP No Frameworks
Play Now 🎮 Built for fun
🃏
Hant
Macedonian Card Game • 5 Rooms • 2-6 Players
The classic Macedonian Rummy card game brought to the web. Two decks, jokers, pair and sequence melds, opening with 51+ points, closing sets, reclaiming jokers — all the traditional rules with a modern poker-table UI. Fully server-side validated multiplayer.
Multiplayer 5 Rooms Card Animations Melds & Jokers Pure PHP Responsive
Play Now 🎮 Built for fun

Contact

Business inquiries, partnerships, or support.