About LiftShift
A free and open source workout analytics tool (AGPL-3.0). Connect Hevy, Strong, or Lyfta and get answers your logging app doesn't give you — muscle heatmaps, plateau detection, set-by-set feedback, and AI-ready exports. Everything runs in your browser.
Open source
LiftShift is fully open source under the AGPL-3.0 license. The entire codebase is available on GitHub. You can audit the code, run it locally, or contribute. No hidden telemetry, no paywalls, no server-side data collection.
What LiftShift does
- Imports workout data from Hevy, Strong, and Lyfta (API sync or CSV).
- Builds interactive muscle heatmaps with per-exercise drill-down, volume zone scoring, and muscle balance analysis.
- Detects plateaus and gives specific, actionable next-session suggestions.
- Analyzes every set in a workout with plain-English feedback across 19 scenarios.
- Tracks three kinds of PRs: all-time bests, 2-month bests, and premature PRs.
- Exports structured training data for AI analysis with built-in analysis modules.
- Combines data from multiple apps into one unified dashboard.
- Processes everything locally in your browser — no server-side storage.
What makes LiftShift different
Hevy, Strong, and Lyfta are great workout loggers. LiftShift is a workout analyst. Your app shows you what you did. LiftShift tells you what it means — and what to do next.
Most analytics tools give you dashboards full of numbers you have to interpret yourself. LiftShift gives you status labels, coaching feedback, and tiny actionable suggestions you can try next session. See the How it works guide for a complete walkthrough.
What LiftShift does not do
- It is not a workout program generator or coaching service.
- It is not medical advice or nutrition tracking.
- It does not store your training history on LiftShift servers.
- It does not charge subscription fees. Every feature is free.