ScaleForge

Overview

ScaleForge is a guitar theory app built for iOS and Android with Flutter. It gives guitarists an interactive fretboard explorer and scale library — covering everything from basic pentatonics to advanced modes — with a freemium model and Pro subscription for full access.

The Problem

Most guitar theory resources are either text-heavy books or YouTube videos that don't let you interact with the material. Players need a tool that maps theory directly onto the instrument in real time.

What I Built

• Interactive Fretboard — Tap any root note and scale type to see the pattern mapped across the full neck instantly.
• Scale & Mode Library — Major, minor, pentatonic, blues, all seven modes, and more — with descriptions of each.
• Custom Tunings — Standard, drop D, open tunings, and fully custom configurations.
• Save System — Bookmark scales and custom patterns for quick access during practice.
• Freemium + Pro — Free tier covers core scales. Pro unlocks the full library via in-app subscription (monthly and yearly).
• Cross-Platform — Single Flutter codebase shipping to both iOS App Store and Google Play.

Stack

Flutter + Dart for the full client, Supabase for user auth and cloud saves, Apple StoreKit for iOS IAP.