Independent studio · Romania

Worlds you
can hold.

Games, apps and websites — designed, engineered and shipped end to end by Portal Design Studio.

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The studio

One studio, one person answering for every pixel. We design, engineer and ship games and apps — from the first prototype to the store listing — and we build websites the same way: fast, honest and made to last.

3
games you can play today
150+
automated tests behind Onyx Flow
60 fps
Onyx Flow on a mid-range phone

Games

Play something.

Out now on Google Play

Onyx Flow

Block puzzle · Android

A block puzzle with a state to chase. Clear lines and the Flow meter charges; keep the board open and every clear is worth more. Reach Flow and the board turns to crystal.

  • Free, ad-supported
  • No lives, no timers
  • Plays offline

Privacy policy for Onyx Flow

Onyx Flow: the moment Flow activates and the word FLOW sweeps across the board.
Onyx Flow: a five-clear HOT combo lighting up a column.

Play in your browser · Android coming soon

Water Sort

Cozy sorting puzzle · Web

A potion shop run by cats. Tap a bottle, tap another, and pour until every bottle holds a single color. Every generated level is run through a solver before you see it.

  • 5 hand-painted worlds
  • A new puzzle every day
  • Stars can't be bought
Water Sort home screen: three cats brewing potions in a cozy shop.
Water Sort level 24: ten bottles of colored liquid waiting to be sorted.

New · Play in your browser

Squishy & Jelly

Soft toys to squeeze and slice · Web

Press a chunky stick of slow-rising butter foam, pull and shake a wobbly kiwi jelly, then slice it with a child-safe toy knife — and every piece keeps squishing. Real soft-body physics, drawn with WebGPU.

  • Butter, kiwi, melon, citrus, paw
  • Child-safe toy knife
  • Free, no account

Needs a browser with WebGPU — recent Chrome or Edge, on desktop or Android.

Squishy & Jelly on a phone: a soft yellow butter stick with BUTTER printed on top.
Squishy & Jelly on a phone: a glossy kiwi slice of green jelly with black seeds and a creamy core.

Apps & projects

Software that has to be right.

Web app live · Android coming to Google Play

TiroCare

Health app · Web & Android · in Romanian

One calm place for people living with a thyroid condition in Romania: lab results with reference ranges, treatment reminders, a symptom journal and a clear report for the doctor. No account needed; AI features run only with explicit consent. A personal organiser, not a medical device.

TiroCare home screen with the latest TSH result, today's doses and a check-in streak.
TiroCare lab results plotted against their reference ranges.

Live demo · Open source

Echoboard

Feedback boards & roadmaps for SaaS · Web

A complete multi-tenant SaaS: workspaces with roles and invitations, public boards with voting and comments, a roadmap shaped by those votes, an embeddable widget and Stripe subscriptions — with 60+ integration tests against a real Postgres.

Echoboard demo board: feature requests sorted by votes.
Echoboard roadmap grouped into Planned, In progress and Complete.

Open source

askdocs

A RAG pipeline that knows when not to answer

Ask a question about a set of documents and get an answer with citations — or an honest “not covered here” instead of a confident guess. Hybrid retrieval, retrieved text treated as untrusted, and quality measured with a scored evaluation set.

askdocs in a terminal: asked about a refund policy the documents don't cover, it answers that the documentation does not cover this. The evaluation run passes all 17 questions.
Real output, run offline with no API key.

Open for new projects

Websites, made to order.

For businesses and products, in Romanian or English. A custom design, not a template look — built mobile-first, fast on any phone, with domain, hosting and business email set up for you, a privacy page and search basics included, and no trackers unless you ask for them.

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How we work

Small studio. Whole products.

Portal Design Studio is founded and run by Adrian Iulian Antal, a developer in Romania. Design, engineering, visual direction, sound, store listings, privacy policies and release — it all happens in-house.

  1. 01

    Fair by design

    No paid continues, no energy, no streak insurance for sale. Water Sort sells nothing at all.

  2. 02

    Your data stays yours

    No accounts in our games and no analytics. Progress is saved on your own device.

  3. 03

    Engineered to last

    Game rules live in engine-free code, with 150+ automated tests behind Onyx Flow.

  4. 04

    Shipped, not just built

    Real-device testing, closed testing on Google Play, consent flows and honest store listings.

Contact

Let's build
something.

Questions, bug reports, press and partnerships — one address, read by a person.

contact@portaldesignstudio.com