About

Mastro is an astrology software designed to support both enthusiasts and professionals in their practice. Its development began in 2009, initiated by François Rouleau, a passionate astrologer and programmer. His goal: to create a tool that is complete, intuitive, and pleasant to use—one that reflects the natural and visual way astrologers work with a chart.

Mastro’s interface places the chart at the center of the screen, surrounded by tool panels that can be opened or closed as needed—much like laying out papers and notes around a printed chart. This approach is meant to provide a clear, flexible, and coherent workspace, aligned with the habits of astrologers and the expectations of serious astrology enthusiasts.

With the arrival of Vincent Godbout, Mastro gained an original interpretation support feature known as the expert system. Based on his research into astrological factors and their probabilistic weighting, this system powers several of Mastro’s advanced features, including forecasting curves and interpretation keywords—for both natal and event-based analysis. These tools help highlight the most significant elements of a chart while giving users full freedom to form their own interpretations.

Today, Mastro continues to evolve, staying true to its original mission: to equip those who wish to deepen their understanding of astrology in a professional, flexible, and inspiring environment.

The Team

François Rouleau

François Rouleau is a systems analyst and programmer with over 30 years of experience. Passionate about astrology since his twenties, he has combined his expertise and his interest in the discipline to develop a unique understanding of its complex systems. Throughout his career, François has gained solid experience in technical writing, contributing to various projects where precision and clarity are essential.

In March 2009, he launched the Mastro project—an innovative tool that brings together his programming skills and his deep knowledge of astrology, with the aim of supporting astrological practice through advanced solutions. His path has been shaped by a constant pursuit of excellence and rigor, both technically and philosophically.

Vincent Godbout

Vincent Godbout, B.A., B.Sc., is a mathematician, mentalist, astrologer, and the designer of the expert system used in Mastro. He taught mathematics at the college level and is the author of books and courses on logic, differential and integral calculus, problem solving, and the history of mathematics. He discovered astrology in 1977, and in 1981 became the owner of an esoteric bookstore, where he was the first to offer computerized astrology services to astrologers in Montreal. During the 1980s, in addition to his consultations, he gave lectures on astrological research and cosmobiology. In 1988, he published a foundational article on his "probabilistic semantics" in Considerations magazine.

Starting in 2009, he has been developing automated astro-linguistic tools to support astrological interpretation. He now devotes his time to the development of Mastro, to teaching, and to evidence-based astrological research. Since 2020, he has published nine articles in the British journal Correlation.

Services offered:

• Natal chart analysis (includes a 90-min consultation): $200
• Personalized annual forecast agenda: $150
• Annual forecast (includes a 60-min consultation and the agenda): $200
• Birth time rectification (unique method validated by experimental results; effective even when only the birth date is known): $185

Email: vincentgodbout@hotmail.com

Benoît Rouleau

Benoît Rouleau has over 15 years of experience in web development, a field in which he has distinguished himself through his technical expertise and ability to manage complex projects. As the person responsible for the Mastro Store transactional platform, he ensures its smooth operation, optimizes the user experience, and oversees transaction security. He also plays a key role in Mastro’s licensing distribution and validation system.

In addition to his technical responsibilities, Benoît occasionally provides customer support. Thanks to his versatility and professionalism, he contributes actively to the development and maintenance of the tools that support Mastro’s growth.

Vital Coron

Vital Coron has been studying astrology since 1977. His professional background is rich and diverse. After four years as an engineering assistant for a firm in Laval, he went on to become the local and international purchasing director for a heavy equipment company for six years. He also owned an electronics business for 26 years.

In 2020, he became closely involved with the Mastro team and quickly became a key figure in the project, deeply engaged with the software as its main tester and a regular contributor. Vital has become a valuable resource for Mastro users. He also collaborates with Vincent on astrological research and has co-authored two articles with him in Correlation.

Services offered:

• One-on-one training for mastering Mastro (Standard or Expert): $50 / hour
• Astrological consultation (natal chart, forecasting, etc.): $200

Email: vitalc@bell.net
Phone: +1-450-275-2050