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Builder & CreatorVol. 01 · '2618.22° N · 66.59° W

Dimitri
Demarchos

From idea to launch, I build products that scale, brands that resonate, and experiences people come back to.

Get in touchSee the work
Instagram@dimitri.demarchosLinkedInin/dimitri-demarchos
ship.log
~/demarchos
  1. JUL '26wipcaretsphone-native code editor
  2. JUN '26soundxdmtr"transmissions" EP out
  3. JUN '26shippedmarginalocal-first reader
  4. MAY '26shippedfoldlessfull-page capture
$still shippingJun '26
→ Selected proofOn the record
07
Apps shipped

live on the stores

03
Web properties

studio & ventures

01
Record out

xDMTR · streaming now

01The Studio

One operator, many transmissions.

EchoPersona is the through-line — one practice for strategy, design, and engineering, plus a steady run of tools, logistics, film, and sound.

  • Product strategy◆
  • Product engineering◆
  • SwiftUI / iOS◆
  • Next.js / web◆
  • APIs & integrations◆
  • Cloud & DevOps◆
  • Local-first tooling◆
  • Project recovery◆
  • Logistics & ops◆
  • Film direction◆
  • Sound design◆
  • Music production◆

EchoPersona is the through-line. It is the studio where the rest begins — strategy, design, and engineering run as one practice, shipping native apps to the App Store and web apps on Next.js, and unblocking teams that just need a clear path to their next release.

Underneath the client work runs a quieter habit: a steady output of private-by-default, local-first tools built for their own sake — small, sharp software made to be owned rather than rented, each one a study in doing a single thing well.

The same hands reach past the screen. PackagePR moves parcels from the US mainland to Puerto Rico; Still Field shoots festivals and scores them; xDMTR presses it all into electro-pop. Logistics, film, and music are not detours — they are the studio thinking out loud in other mediums.

// Through the years'19 — '26
  • '19Still Field Studio founded — film in and around live culture
  • '22EchoPersona established as the product studio and through-line
  • '23PackagePR launches — US-to-Puerto-Rico forwarding goes live
  • '24Own-tools run begins: NFCore, Privara, QRDock, Pomlo
  • '25More tools land — Margina, Carets, Foldless
  • '26xDMTR’s "Transmissions" EP out; Still Field’s festival doc in production
VitalsVol. 01 · '26
Currently
Founder · EchoPersona
Building
Apps, ventures & sound
Based in
Puerto Rico · remote-first18.22° N · 66.59° W
Open to
Product rescues & collabs
§ By the workPrivacy-first
07Appson the stores
03Ventureslive & running
01EPout on stream
02Web

Studio & ventures, all live.

The businesses — a product studio and two ventures, each in its own brand voice, each shipping today.

ContentsThree plates · this issue
B.01 · Plate Iactive · shipping
EchoPersonaProduct Studio

EchoPersona

Role
Founder & Principal Engineer
Period
'22 — Present
Status
active · shipping
echopersona.com

Software that ships, teams unblocked.

Dimitri’s digital product studio — strategy, design, and engineering under one roof, shipping SwiftUI apps to the App Store and Next.js apps to the web. Equal parts builder and rescuer: launching products from zero and dragging stalled roadmaps back onto a clear path to release.

  • SwiftUI
  • Next.js
  • TypeScript
  • Cloud & DevOps
B.02 · Plate IIlive · on the stores
PackagePRLogistics

PackagePR

Role
Founder & Operator
Period
'23 — Present
Status
live · on the stores
packagepr.com

Your bridge to Puerto Rico.

A package-forwarding service that gives islanders a US mainland address, then consolidates and reships their orders from any American retailer down to Puerto Rico. It turns “doesn’t ship to PR” into a solved problem — Amazon, Wayfair, and the rest, handled end to end.

  • Forwarding
  • Consolidation
  • Tracking
  • Puerto Rico
B.03 · Plate IIIin production · in build
Still Field StudioFilm Studio

Still Field Studio

Role
Founder & Director
Period
'19 — Present
Status
in production · in build
stillfield.studio

An independent studio that immortalizes festivals.

An independent feature-film studio working in and around music, visual art, and live culture — film, original score, and sound design treated as one practice. Its anchor project is a feature-length documentary on music festivals, currently in production.

  • Feature Film
  • Original Score
  • Sound Design
  • Live Capture
03Apps

Seven tools, all mine, all shipping.

Small, private-by-default apps for iOS and Android. Most keep your data on your device — no ads, no tracking, nothing phoning home.

ContentsSeven apps · this issue
C.01 · Plate Ilive · on the storesPrivacy
Privara icon

Privara

Your private world, hidden in plain sight.

A photo, video, and note vault that lives behind a fully working calculator — unlocked only by a passcode hidden in a calculation. Encrypted on-device with decoy vaults, break-in capture, and no accounts or data collection.

  • AES-256
  • Secure Enclave
  • On-device
SiteiOSAndroid
C.02 · Plate IIlive · on the storesSecurity
QRDock icon

QRDock

No tracking, no ads — just QR codes.

Scans ten code formats and builds your own for links, Wi-Fi, and contacts — then checks every scanned URL against phishing databases before you open it. Runs entirely on-device: no ads, no analytics, history that never leaves your phone.

  • On-device
  • Phishing checks
  • 10 formats
SiteiOSAndroid
C.03 · Plate IIIlive · on the storesFocus
Pomlo icon

Pomlo

The time tracker you actually open.

A deliberately minimal Pomodoro timer and project tracker — tap once to start, tag the session, read your week back as a simple chart. Works offline with no signup, and skips the AI gimmicks that make other trackers easy to quit.

  • Offline
  • iOS + Android
  • Weekly charts
SiteiOSAndroid
C.04 · Plate IVlive · on the storesHardware
NFCore icon

NFCore

Read, write, and clone NFC tags.

A professional NFC toolkit that reads tags and writes URLs, text, contacts, and Wi-Fi — and clones a tag in two taps. Goes deep with hex memory dumps, a raw command console, and batch writes, all stored locally with no cloud.

  • Core NFC
  • On-device
  • Hex editor
SiteiOSAndroid
C.05 · Plate Vlive · on the storesReading
Margina icon

Margina

Send yourself a book — always where you left it.

A local-first shelf for the PDFs, EPUBs, and articles you send yourself, with highlights, margin notes, and folders. Files stay in the app and back up encrypted to your own iCloud or Drive — the company hosts nothing.

  • Local-first
  • SQLite
  • Encrypted backup
SiteiOSAndroid
C.06 · Plate VIlive · on the storesCode
Carets icon

Carets

A real code editor, in your pocket.

A fast, Sublime-inspired code editor and notes app built phone-native, not shrunk from desktop — syntax highlighting, multi-cursor, regex find-and-replace, and a command palette. Works offline and edits straight from Files, iCloud, and Drive.

  • CodeMirror 6
  • SQLite
  • Offline-first
SiteiOS
C.07 · Plate VIIlive · on the storesCapture
Foldless icon

Foldless

One tap, the whole page.

Captures an entire webpage top to bottom in a single pass — no scrolling and stitching — up to around 25,000 pixels. Export as one long PNG or a real PDF, with a built-in browser that keeps you logged in and everything on-device.

  • On-device
  • PNG / PDF
  • Built-in browser
SiteiOS
04

The Centerfold · Music

§ a voice in the static
live · transmitting
xdmtr · index 001
xDMTR

electro-pop transmissions
wired straight to the chest.

◆liner notes · side a◆
  1. 01Frequency
  2. 02Feel It
  3. 03Half-Past One
  4. 04Finally Me
  5. 05Dig Deep, Climb High
EP · transmissions · out nowfive songs about losing your signal and finding the way back.tune in at xdmtr.com
05Contact · Back cover

Let's build something good.

Open to app builds, product rescues, and the odd music collaboration. Pick a line below — I reply within a day or two.

¶ Send a noteReply in a day or two
Inquiry
¶ CorrespondenceFour channels
¶ Book a callAsync-friendly

Rather talk it through? Grab a slot and we'll walk the idea out loud — no deck, no pitch, just the build.

Book a call
DemarchosVol. 01 · '26 — Built by Dimitri Demarchos