Custom Formula Sheet Mobile App

I’m planning a mobile app that lets users build, organize, and exchange their own calculation sheets. The target audience spans field engineers who need on-the-spot brick or roofing calculations and students who want quick access to classwork formulas.

Core objectives
• Cross-platform delivery: native-quality builds for both iOS and Android.
• Make sharing effortless—users must be able to send a sheet to a colleague or classmate and have it open instantly inside the app.
• Simple in-app editor so anyone can write or edit math expressions, assign variables, and name each formula.
• Sheet management: save locally, sync to cloud, duplicate, and tag for easy retrieval.

Key expectations
1. Intuitive UI that feels at home on both platforms.
2. Clean architecture (e.g., Flutter, React Native, or native Swift/Kotlin—open to your recommendation) with easily maintainable code.
3. Basic authentication to keep personal sheets private until deliberately shared.
4. Share actions that generate a link, QR code, or file export—whatever achieves the smoothest user flow.
5. Lightweight offline mode so calculations still run without connectivity.

Deliverables
– Working mobile app package for iOS and Android.
– Source code in a version-controlled repository.
– Brief setup guide and user notes.
– One revision cycle after first test build.

If you have experience building formula editors, LaTeX/math parsing, or cross-platform sharing features, your insight will be highly valued. Let’s create a tool that makes on-site work and study sessions simpler for everyone.