Deuslogis · Engineering Studio

Clarity,by design.

We’re an engineering studio that designs and builds complete systems — software, embedded firmware, and the hardware around them — clear, dependable, and quietly elegant.

Claritas ex Complexuclarity from complexity

Selected work

Systems we’ve built.

The studio behind Plexus, LeftLane, and Deuslogis Summa — with more in the workshop.

Plant control-room platform

Plexus

A real-time, role-gated control room that replaces a plant’s Excel-and-kiosk sprawl with one industrial dashboard — shift KPIs, andon, quality loops, containment, and big-screen plant displays.

Real-timeRole-gatedBig-screen displaysWeb app
View case study Private · in production
Mobile app · driving telemetry

LeftLane

A driver’s log for iOS and Android: real, trustworthy telemetry, three recording modes, live share, verified share-cards, and 20 driver honors — built end-to-end by the studio.

iOS & AndroidReal telemetryLive shareVerified cards
View case study v1 · launching August 2026
Web app · paušal accounting

Deuslogis Summa

Invoices, the KPO book, and your tax limits in one calm app — built for Serbian paušalci who invoice foreign clients in EUR and USD. The tool Deuslogis runs its own books on, now opening to early users.

Paušal & KPOEUR/USD · NBSForeign clientsBilingual docs
Explore Summa Early access · 2026
Mobile app · Apple Wallet passes

Tessera

A Deuslogis iPhone & Apple Watch app that makes real, signed Apple Wallet passes for the everyday cards no brand ever digitised — the whole thing runs on your phone: no account, no server, owned for life. In development; already proven on a real iPhone.

iPhone & Apple WatchApple WalletMade on your phoneNo server
View case study In development · 2026

See all work

Foundation

Quietly engineered.

Edge-rendered, dependency-light software and reliable embedded systems — fast to reach, simple to operate, and calm to live with. Typed, tested, and precisely made, with the right tool for each problem and no more.

Edge-renderedType-safeWell-testedAccessiblePrecisely madeCalm to operate

How we work

A calm, considered process.

01

Understand

We learn the problem and the people it serves.

02

Shape

We design the architecture and agree the approach.

03

Build

We build in the open — tested, reviewed, and clear.

04

Care

We support and refine what we ship.

An invitation

Let’s build something clear.

Tell us what you’re making. We’ll bring the calm and the rigour.