About 57 Studio
57 Studio is a boutique marketing and business consulting agency founded by Marian-Laurentiu Stoian and Doroteya Slavova.
Their mission is to support companies in their local and international growth by:
- Strategic Positioning in New Markets
- Optimization of Key Business Metrics
- Integrated Marketing Solutions
The Challenge: Outdated Software and a Lack of Transparency
Before Inverso.bg, Doroteya encountered:
- Slow and cumbersome invoicing
- Lack of automated analyses of customers and sales figures
- Manual Lookups and Working in Excel
- A Difficult Migration from the Old System
“The administrative work was taking up too much time and preventing me from focusing on clients and strategies.”
- Doroteya Slavova, CEO
The Solution: Inverso.bg
After comparing various options, 57 Studio chose Inverso.bg because:
- Quick and Easy Invoice Issuance
- AI Analytics for Liabilities and Revenue
- Ready-made reports without the need for spreadsheets
- Custom Client Base Migration (one-time fee)
- Intuitive and modern interface
The Results: A Visible Transformation
With Inverso.bg, 57 Studio achieved:
- 90% faster invoicing
- A clear overview for every customer—no Excel required
- AI Insights for Decision-Making
- Time Set Aside for Strategic Development
- Seamless integration with no data loss
“With Inverso.bg, we no longer just issue invoices—we manage our business more intelligently.”
- Doroteya Slavova, CEO
What's next for 57 Studio?
With its new system, the agency plans to:
- Expanding the Customer Network
- Using Inverso.bg for Internal Monthly Reports
- More in-depth AI integration for forecasting and customer analytics
Support and Service
The Inverso.bg team provides consistent and prompt assistance:
“Every inquiry is resolved immediately. That’s rare and a huge plus.”
- Doroteya Slavova, CEO
All in all
After just a few months of using Inverso.bg, 57 Studio achieved a complete transformation in the way it manages its financial processes.
Before Inverso.bg:
- Slow and Cumbersome Billing Processes
- Manual Tracking of Liabilities and Payments
- Lack of analytics and visibility into customers
- Time Wasted in Excel and Queries
With Inverso.bg:
- Invoicing in 90% less time
- Automated analyses of revenue and liabilities
- A Clear Picture for Every Customer
- AI supports strategic decision-making
- Seamless migration and excellent support
For 57 Studio, Inverso.bg isn't just a new tool—it's a platform that provides confidence and time for growth.
“This is one of the best investments we’ve ever made.”
— Doroteya Slavova, CEO

