WindowsAvailable on Microsoft Store
Decision Tree Studio
Turn procedures into clear decision trees, diagnostic guides and interactive journeys.
Independent French studio · Windows + Android
Simple applications.
Useful tools.
Studio501 creates modern applications that stay effective without needless complexity and are designed to respect your data.
No advertisingNo needless accountLocal when possible
Decision TreeStudio
Ma Liste deCourses
MyHomeAssistantWindows
Android
Featured
Featured applications
AndroidAvailable on Google Play
Ma Liste de Courses
A fast, clear and fully local premium shopping list with no ads or subscription.
AndroidAvailable on Google Play
Budget Assistant
Track expenses, budgets and fixed costs with no account, ads or bank connection.
AndroidPreparing for release
Trip Pocket
Itinerary, bookings, documents, packing and budget together in one private travel journal, even offline.
Why Studio501
Software with just what you need.
Polished experience
Clear interfaces designed to feel good from the first use.
Respect for data
Local operation is preferred whenever the product allows it.
No needless complexity
No forced account, advertising or online service without a reason.
Built to last
Useful, maintainable applications that remain easy to use every day.
Windows
Complete tools for your PC.
Create interactive procedures with Decision Tree Studio and prepare local conversions with Universal Converter Studio.
Explore WindowsAndroid · Google Play
5 applications already published.
Shopping, budgeting, health, home maintenance and important dates: premium, local and ad-free tools.
Explore Android