--- title: "Invisible Serdica - Reviews, Revenue and Downloads in Bulgaria | Apple App Store" description: "“Invisible Serdica” is a free application that gives you the opportunity to explore the hidden and most attractive historical and architectural treasures of Sofia, the capital of Bulgaria, by providin" --- # Invisible Serdica — Bulgaria ![Invisible Serdica App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/2c/0f/02/2c0f021d-f5e3-561a-4806-dca3b9455c19/AppIcon-1-0-0-1x_U007emarketing-0-5-85-220.jpeg/400x400bb.jpg) **Developer:** [Student Computer Art Society (SCAS)](https://apptail.io/developer/student-computer-art-society-scas-sgid) **Category:** Travel **Rating:** 5.0/5 (1 ratings) **Price:** Free **Bundle ID:** InvisibleSerdicaSOKI2014 **Store:** Apple App Store **Country:** Bulgaria **Version:** 1.5 (released 2025-11-19) **Original Release:** 2014-04-18 **App Store Link:** [Download on Apple App Store](https://apps.apple.com/bg/app/app/id860755198) **AppTail Page:** [https://apptail.io/app/invisible-serdica-uZdh/bulgaria](https://apptail.io/app/invisible-serdica-uZdh/bulgaria) ## Invisible Serdica Description “Invisible Serdica” is a free application that gives you the opportunity to explore the hidden and most attractive historical and architectural treasures of Sofia, the capital of Bulgaria, by providing images, videos, 3D models and interesting stories and legends about the locations, different from the standard information you will find in any tourist’s guide. As a start-up several key places were chosen: 1/ “St. Sofia” Church 2/ “St. George” Rotunda Church 3/ The Amphitheatre of Serdica 4/ The Largo (incl. the places around and also hidden beneath) 5/ The tombs hidden below the square of the National Assembly and around it and others Most of the content included in the application is taken from old books, which contain unique information, gravures, images and drawings. The idea is to make this interesting but not well-known data available for the wider public and thus make the most inspiring places in Sofia (its former Thracian and Roman name being “Serdica”) even more attractive. Another, also important aim of the application is to promote NALIS catalogue by providing links to books and other published works (that are related to the places chosen) included into the catalogue. “Invisible Serdica” application can be useful not only for the users of NALIS’s web site and catalogue and bibliophiles, but also for tourists and visitors of Sofia, as well as for students and teachers and serve educational purposes. - „Невидимата Сердика“ е безплатно приложение за мобилни телефони, което дава възможност на потребителите да научат повече за скритите и най-впечатляващи исторически и архитектурни обекти в София, столицата на България, посредством изображения, видео материали, 3D модели, интересни истории и легенди за подбраните обекти, различни от стандартната информация в пътеводителите. Като начало бяха подбрани няколко ключови обекта: 1/ Църква „Св. София“ 2/ Църква Ротонда „Св. Георги“ 3/ Софийски римски амфитеатър 4/ Ларгото (включ. обектите около и под него) 5/ Гробниците под жълтите павета и други Като източници за по-голямата част от съдържанието в приложението са използвани стари книги и поместените в тях уникална информация, гравюри, изображения, чертежи и др. Идеята на приложението е да разкрие и направи достъпна за по-широк кръг потребители тази интересна, но малко известна информация и по този начин да направи най-вдъхновяващите обекти в София (чието тракийско и римско име е било „Сердика“) още по-привлекателни. Друга, също така важна, цел на приложението е да популяризира НАБИС каталога като включва линкове към книги и различни публикации, поместени в него и свързани с избраните пет обекта. Приложението „Невидимата Сердика“ може да е полезно не само за ползвателите на НАБИС каталога и библиофилите, но и за туристи и посетители на София, както и за ученици, студенти и преподаватели с образователни цели. ## Invisible Serdica Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple112/v4/b8/f1/81/b8f181da-393e-946a-481d-472bc944ee8f/pr_source.png/392x696bb.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple112/v4/d9/61/af/d961af13-cbed-4884-3328-063551beb223/pr_source.png/392x696bb.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple112/v4/1c/41/92/1c41926a-b0e6-ffa6-0e73-1c6449dd5061/pr_source.png/392x696bb.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple2/v4/28/ef/71/28ef71c1-74cf-6bc0-4b87-479374839d37/pr_source.png/392x696bb.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple112/v4/7f/10/5d/7f105d82-d1bd-2d39-f924-88e6d70060bb/pr_source.png/392x696bb.png) ## Invisible Serdica Rating Breakdown in Bulgaria - 5 stars: 1 (100%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## Invisible Serdica Available In - [United States](https://apptail.io/app/invisible-serdica-uZdh/united-states) - [Bulgaria](https://apptail.io/app/invisible-serdica-uZdh/bulgaria) - [Belgium](https://apptail.io/app/invisible-serdica-uZdh/belgium) - [Canada](https://apptail.io/app/invisible-serdica-uZdh/canada) - [Cyprus](https://apptail.io/app/invisible-serdica-uZdh/cyprus) - [Estonia](https://apptail.io/app/invisible-serdica-uZdh/estonia) - [Hungary](https://apptail.io/app/invisible-serdica-uZdh/hungary) - [Jamaica](https://apptail.io/app/invisible-serdica-uZdh/jamaica) - [South Korea](https://apptail.io/app/invisible-serdica-uZdh/south-korea) - [Luxembourg](https://apptail.io/app/invisible-serdica-uZdh/luxembourg) - [Latvia](https://apptail.io/app/invisible-serdica-uZdh/latvia) - [North Macedonia](https://apptail.io/app/invisible-serdica-uZdh/north-macedonia) - [Norway](https://apptail.io/app/invisible-serdica-uZdh/norway) - [Poland](https://apptail.io/app/invisible-serdica-uZdh/poland) - [Suriname](https://apptail.io/app/invisible-serdica-uZdh/suriname) - [Argentina](https://apptail.io/app/invisible-serdica-uZdh/argentina) - [South Africa](https://apptail.io/app/invisible-serdica-uZdh/south-africa) - [Australia](https://apptail.io/app/invisible-serdica-uZdh/australia) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*