A cross-platform Engineering and contractor toolkit featuring 32 calculators
What is it? All Trades Calculator Pro is a professional field-calculation application built for construction professionals, electricians, plumbers, welders, carpenters, mechanical technicians, and general contractors. The app uses a single Python/Kivy codebase to deliver native deployments across: Android iOS Windows Desktop The platform currently includes 32 calculators across 7 trades with a dynamic calculator engine, job-sheet PDF exports, metric/imperial support, multilingual localization, calculation history, and contractor-focused workflows. Key Features Multi-Trade Coverage Electrical Plumbing Construction Carpentry Welding Mechanical General Contractor 32 calculators are currently implemented. Cross-Platform Single codebase supporting: Android (Buildozer) iOS (kivy-ios) Windows Desktop PDF Job Sheets Users can: Create jobs Add clients Save calculations Export professional PDF reports Localization Built-in support for: English Spanish Simplified Chinese Language switching is instant and does not require restarting the application. Unit Support Metric Imperial Entire calculator workflows adapt automatically. Privacy First All data remains on-device. No cloud services required. End User License Agreement The calculations provided by All Trades Calculator are intended for estimation, educational use, and professional assistance only. Users remain solely responsible for verifying all calculations, dimensions, code compliance requirements, safety standards, and project specifications before construction, installation, fabrication, procurement, or implementation. The application does not replace: Licensed engineers Electrical inspectors Building inspectors Architects Code officials Professional judgment The software is provided "as is" without warranties of any kind, express or implied. The developer shall not be liable for financial loss, property damage, project delays, injury, code violations, loss of profits, or any damages resulting from use of the application. By selecting "Accept", the user acknowledges and agrees to these terms
Next step: <p>The buyer can launch and grow the app on Google Play, Microsoft Store, and iOS, add additional trade categories and calculators, introduce premium subscriptions or paid downloads, expand multilingual support, integrate cloud sync and project management features, and form partnerships with contractors, trade schools, and construction businesses. The platform already provides a solid cross-platform foundation that can be expanded into a comprehensive professional field toolkit.</p>
For sale
Asking price: $420 USD
What's included
Source code, All related data, All related design work
Android APK/AAB build configuration, Windows desktop build, iOS deployment configuration, multilingual framework (English, Spanish, Chinese), PDF job sheet system, project documentation, calculator engine, GitHub repository, and store-ready branding assets
Reason for selling
I have enjoyed building the project and have taken it to a strong foundation, but my focus is shifting toward other software and engineering ventures. I would like to see the project continue growing under someone who can dedicate time to scaling, marketing, and monetizing it.
Project metrics
Average Monthly Visitors: Pre-launch
Average Monthly Revenue: Pre-revenue
Average Monthly Downloads: Pre-launch / New project
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