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Best Free & Open Source Alternatives to Strong

Compare 3 open-source Strong alternatives including wger, LiftTrace and Stronk

If you're looking for the best open-source alternative to Strong, wger is a strong place to start. If it doesn't quite fit your needs, there are plenty of other great options worth exploring, including LiftTrace and Stronk. We've ranked the top alternatives to help you compare your options and find the right fit.

#1 wger

wger

Self-hosted workout and fitness manager with nutrition tracking and mobile apps.

wger (pronounced "vega") is a free, open-source workout and fitness manager that you can self-host or use via official mobile apps. Built with Python and Django, it provides a complete solution for tracking workouts, nutrition, body measurements, and progress photos without relying on proprietary subscription services.

The platform includes a built-in exercise wiki with a community-contributed database, custom workout routines with automatic weight progression rules, and nutrition management powered by Open Food Facts. It supports multiple users with basic gym management features and offers a REST API for third-party integrations.

wger is available as a web application that deploys easily with Docker, and through cross-platform mobile apps on Android, iOS, F-Droid, and Flathub. The project is actively translated by the community via Weblate and released under the AGPL-3.0 license.

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#2 LiftTrace

LiftTrace

Self-hosted weightlifting tracker — single Docker container, AGPL-3.0, no telemetry, no cloud sync.

LiftTrace is a privacy-first, self-hosted weightlifting and workout tracker designed for serious lifters who want full control over their training data. It runs entirely in a single Docker container on your own hardware — no external accounts, no subscriptions, and no telemetry.

The app covers the full training lifecycle: a diary for logging workouts with per-exercise set tracking (weight, reps, RPE), warm-up set handling, progressive overload auto-fill, superset and circuit management, a rest timer, and gym tools like a plate calculator. It also includes a program and template builder with starter presets (Push/Pull/Legs, Upper/Lower, Full Body), a rich exercise library powered by wger and Free Exercise DB with custom exercise support, and detailed statistics covering volume, frequency, PRs, body weight trends, and muscle-group breakdowns.

LiftTrace ships with Trace, an optional AI coaching assistant that has live context of your program, recent workouts, PRs, and body stats. It supports multiple LLM providers (Claude, OpenAI, Gemini, Ollama, and more) and includes a hold-to-voice-log feature.

Other notable features include built-in radio and music streaming from self-hosted media servers (Subsonic/Navidrome, Jellyfin, Plex, Emby), multi-user support with role-based access, OIDC SSO integration, and import tools for migrating data from proprietary apps like Hevy, Strong, FitNotes, and Jefit. A native Android app (Capacitor-based) is available for sideloading, and the PWA works on any modern browser with offline support.

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#3 Stronk

Stronk

Open Source Fitness Tracking App

Stronk is a free, installable web application for tracking weightlifting progress over time. It provides a straightforward interface for logging workouts, recording sets and repetitions, and monitoring how performance changes across training sessions. The app is designed to be installed as a progressive web app and stores all workout data locally on the user's device.

The project is intentionally minimal — focused on the core task of logging lifts and reviewing historical progress without the subscription fees, upsells, or feature bloat common in commercial fitness apps. Remote backup support is under development for users who want to protect their data across devices.

Stronk is suited to lifters and fitness enthusiasts who want a simple, free, and privacy-respecting tool for tracking their training without sharing data with a third-party service.

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Frequently Asked Questions

Are there any open source alternatives to Strong?

Yes, there are 3 open source alternatives to Strong. Popular options include wger, LiftTrace, Stronk. These alternatives are free to use and many offer self-hosting options.

What is the best free alternative to Strong?

The best free alternative to Strong depends on your specific needs. wger is a popular choice with self-hosting capabilities. All alternatives listed here are open source and free to use.

Can I self-host an alternative to Strong?

Yes, 3 of the alternatives listed here can be self-hosted, giving you complete control over your data and privacy.

Why should I switch from Strong to an open source alternative?

Open source alternatives to Strong offer several advantages: no vendor lock-in, complete data ownership, no subscription fees, the ability to self-host for privacy and security, and active community support. You can also customize the software to fit your specific needs.

Strong

Strong

Strong is a popular workout tracker for iOS focused on strength training and weightlifting. It helps users log sets, reps, and weights, track progress over time, and follow custom routines. Available with optional premium subscription features.

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