aree6/LiftShift — reverse-engineered prompt

Build me a polished web app like LiftShift for people who want to upload and understand their workout history. I want users to be able to import exports from Hevy and Strong, and ideally sync Hevy with login or API key if that’s supported, then see a clean dashboard with volume trends, workout distribution, personal records, estimated 1RM, exercise progress, detailed history, and date or calendar filters.

Make it feel visual and motivating, with muscle heatmaps, plateau detection, session type detection like strength or hypertrophy, smart feedback on sets and rep ranges, and simple AI style insights that explain what is improving or stalling. Save data locally in the browser so people can come back without losing it, and include light and dark theme options. I also want shareable progress cards and solid exercise plus muscle breakdown pages.

Keep the experience simple, modern, and mobile friendly, with good CSV handling for common export quirks. If you need details, check the official LiftShift site and docs online.