// klaipėda · 70+ shipped · 5.0★

A project you can
price in seconds.

Pick what you need — a preliminary estimate appears in real time, and the assistant answers your questions instantly. Websites, apps, e-commerce, CRM and AI. One developer, no agency chaos.

70+
PROJECTS
SHIPPED
5.0
CLIENT
RATING
5+
YEARS
BUILDING
6 wks
AVG. TO
LAUNCH
webxpert.lt / studio
ONLINE
PROJECT_ESTIMATElive estimate
WHAT DO YOU NEED?
SCOPE5 psl.
114+
ADD-ONS
WEBXPERT
ESTIMATE · EST.#2026 · KLAIPĖDA
PRELIMINARY
TOTAL (FROM)
€2 900
timeline
~3 sav.
WEBXPERT AI
Hi — I'm the WebXpert assistant. Tell me what you'd like to build and I'll help estimate scope, a preliminary price, or set up a call. I answer from real experience.
(01) — ABOUT
Donaldas Jautzemis · WebXpert
Solo developer
Klaipėda · Lithuania
★★★★★ 5.0 on paslaugos.lt

One developer. The whole product — from the first sketch to the thing your customers use every day.

Over 5+ years I've shipped 70+ products for founders and teams. No account managers, no hand-offs, no diluted vision — you work directly with the person writing the code. Sharper decisions, faster iterations, and software built to move a real business number.

01
Direct, senior collaboration
You talk to the builder, not a middle layer.
02
Outcome over output
Built around the number you need to grow.
03
Modern, durable stack
Next.js, React Native, Flutter, Swift, Kotlin, AI.
04
Shipped, not stalled
Most launches inside six weeks.
(02) — SERVICES

What I build, and what it costs to start.

Transparent starting prices. Every project is quoted exactly after a short free call.

(03) — WORK

A few things I've shipped.

LIVE
CivvyMode

CivvyMode

iOS · Android

A health & relationship companion with an AI chat assistant, cycle tracking and personalized guidance. iOS + Android, Apple Watch.

React NativeAI
LIVE
QRToolkit

QRToolkit

iOS · Android

Private QR scanner & generator — URL, text, WiFi, contacts. Works offline, no ads.

SwiftKotlin
LIVE
FormulaAI

FormulaAI

Excel · Sheets

Plain language into spreadsheet formulas. Excel, Google Sheets, Numbers — with AI explanations.

AIExcel

Most projects are under NDA — these are the ones I can show publicly. · LinkedIn · GitHub · paslaugos.lt

(04) — REVIEWS

Trusted by the people I've built for.

5.0/ 5.0
★★★★★
Reviews on paslaugos.lt →
★★★★★

“Extremely professional work, everything on schedule, communication a perfect 10, fast and smooth. The functionality was even better than expected. Thank you.”

E
E.
System build
★★★★★

“I ordered a website for my company — done quickly and well. I'm planning to add a chatbot next, so I'll be back, because I loved everything.”

M
UAB Merena
Company website
★★★★★

“Built an e-shop and added a chatbot. Really knows his craft.”

V
V.
E-commerce + AI
(05) — JOURNAL

Notes from the workshop.

All articles →
AI
2026 · 6 MIN

Artificial intelligence in business

Where AI actually helps small and mid-sized business — no hype.

{ }
2026 · 8 MIN

Web technologies 2025

Picking a stack that survives past launch day.

2026 · 5 MIN

E-commerce optimization

How to lift store conversions with technical and UX fixes.

(06) — CONTACT

Let's build
something good.

Tell me what you're working on. I reply to every serious inquiry within a day — usually the same one.

STUDIO
Klaipėda, Lithuania

No spam · I reply within 24 h · the code is yours