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Portrait of Andrii Matiushev

Author

Andrii Matiushev

Independent mobile app developer · founder of Zydeno

I build mobile apps under the Zydeno name. These three are my most personal projects so far.

I made them because Bulgaria deserves modern apps that tell its story with dignity: in its own language, with its own history and with care for every detail. They are free because they are my way of saying “thank you” to a country I love.

Write to meAll Zydeno apps

How they are made

Four decisions behind the three apps

Each of them could have been simpler. These are the four decisions that made the work take longer and the apps turn out better.

  1. ILanguage

    Stress marked on every course word

    Bulgarian doesn’t write the stress, yet it is exactly what gives a foreigner away. So every word and phrase in the course has its stress marked, and each of them can be heard at normal or slow speed.

    39,570audio clips

  2. IILand

    Works without a signal

    Bulgaria’s most beautiful places are often where the phone loses its signal — in Rila, Pirin and the Rhodopes. So the map, the places and the trails all live on the phone, and every place comes with the practical side: when it is open, how long it takes and what entry costs.

    27,220places, offline

  3. IIIMemory

    Every fact has a source

    History is easy to tell beautifully and hard to tell accurately. So each of the 59 stories shows how we know what it tells, and artistic reconstructions are clearly marked. Before release, the texts are still to be reviewed by historians.

    982bibliography entries

  4. IVPrinciple

    Free, with no strings

    No ads, subscriptions, sign-up or data collection — not now and not later. Progress, saved places and finds stay only on the phone of the person who collected them.

    0ads or subscriptions

The three apps

Partnership

Open to partnership

With ministries, museums, universities, schools and tourism organisations: expert review of the content, new languages, and reaching students, travellers and everyone learning Bulgarian. The apps are free and will stay free.

Write to support@zydeno.com
Publisher
Andrii Matiushev (Zydeno)
Platforms
iPhone, iPad, Android
Price
Free, no in-app purchases
Privacy
No personal data collected