Open Source Gym Management Software
Gym management software is easy to picture as a class calendar, but the operational reality is heavier: it decides whether a member can enter the building, whether a contract renewal bills correctly, and whether the front desk can settle a payment dispute. Those are money and safety functions, not scheduling niceties. Running an open source system lets a gym keep that operational record - the member lifecycle from signup through attendance to renewal - in its own stack, and adapt the rules to how the facility actually works instead of waiting on a vendor's roadmap. It also keeps member data, waivers, and payment history on infrastructure you control, which matters when that record includes home addresses, health notes, and access logs.
wger
Free workout and fitness manager with self-hosted workout, nutrition, weight, and gym tracking
FitTrackee
Self-hosted workout and outdoor activity tracker that stores workout data on your own server
GYM One
Open source web software for managing gym members, classes, tickets, payments, and access control
Our picks
GYM One and wger sit on opposite sides of the gym, so pick by whether you are running the front desk or supporting members' training.
Front-desk operations platform: GYM One GYM One is the operational core for a facility, centralizing member records with status and expiration dates, ticket types for day passes, memberships and punch cards, class sign-ups with capacity limits and cancellations, payment tracking, and revenue reports. It connects to physical access-control hardware and logs entry and exit events, and its TV Showcase module drives reception displays with schedules, announcements, and rotating content. Built as a self-hosted PHP and MySQL app installed through its own installer, it fits a gym that wants billing, check-in, and access control in one place; note the custom license before commercial use.
Member training and nutrition tracker: wger wger comes at fitness from the member and trainer side, with custom workout routines and automatic weight-progression rules, diet plans backed by the Open Food Facts database, body-weight and custom measurement tracking, and a progress photo gallery. A REST API, multi-user support, and native Android and iOS apps make it a solid member-facing training platform, and it self-hosts with Docker Compose under the AGPL. It offers only basic gym management, so treat it as the training layer rather than a front-desk system.
Matching the software to how a gym actually runs
The tools here are not really competitors, and that is the first thing to understand: they sit on different sides of the gym. GYM One is an operational management system built for the front desk, handling member records, ticket and membership pricing, class sign-ups with capacity limits, payment tracking, revenue reports, and even integration with physical access-control hardware. wger is a fitness and workout manager built for the member and trainer, centered on routines, nutrition logging, body-weight and measurement tracking, and progress photos, with only basic gym management on top; FitTrackee sits further toward the individual still, a self-hosted logger for workouts and outdoor activities imported from files. Deciding which side of the operation you are trying to run comes before comparing features.
For the operational side, weigh the membership and billing model hardest, because gyms create edge cases ordinary booking software never meets: recurring dues, freezes, prorated starts, failed-payment retries, and refunds. GYM One tracks tickets, memberships, and payments with revenue reporting, and connects to door hardware while logging entry and exit events, which is the combination a staffed or unstaffed facility depends on. Test the workflows that touch money or safety first - billing, refunds, check-in speed, and access control - since those are where a weak system does real damage rather than mere inconvenience.
Because this is a small, curated set rather than a broad market, be clear about scope. GYM One is a young PHP application with a custom license, so read that license before commercial use, while wger is an established, AGPL-licensed tracker with a REST API and mobile apps that suits member-facing fitness far more than facility operations. Whichever you adopt, confirm you can export member profiles, attendance, and payment history in usable formats, so the record that runs your business is never trapped in one app.
Related categories
Frequently asked questions
Are GYM One and wger interchangeable?+
No, and mixing them up leads to the wrong choice. GYM One is an operational platform for running a facility - members, tickets, payments, class capacity, and access control from a front desk. wger is a workout and fitness manager built around routines, nutrition, and body tracking for individual members and trainers, with only basic gym management added. If you need billing and door access, that is GYM One; if you need training and progress tracking, that is wger.
How do payments and PCI scope work in open source gym software?+
Prefer software that hands card entry to a payment processor and stores only tokens, never raw card numbers, which keeps your PCI burden lower and limits the damage from a breach. GYM One tracks tickets, memberships, and payments with revenue reporting, but confirm exactly how it connects to a processor and how it handles failed payments, refunds, and chargebacks. Also check that the processor operates in your country and supports the payment methods your members expect.
Will it connect to door access hardware and check-in devices?+
Do not assume hardware support from a single feature line. GYM One is notable here because it integrates with physical access-control hardware and logs entry and exit events, which is exactly what a staffed or 24-hour facility needs. Even so, verify the specific scanners, readers, and controllers you use or plan to buy, and ask whether the link is real-time or batch. For unstaffed hours, confirm what happens to the door if the server or internet drops.
What matters for class scheduling and personal training?+
Look past a plain calendar view. Gyms need capacity limits, waitlists, cancellation windows, and no-show handling, and if personal training is a revenue center, a way to sell, redeem, and report sessions. GYM One supports class sign-ups with capacity limits and cancellations, which covers the group-class basics. Test how packages and trainer availability are handled before you rely on it, because a weak booking model creates manual cleanup at the front desk and unreliable revenue reporting.
Should I self-host gym management software?+
Self-hosting fits when you have technical help or a reliable vendor to handle updates, backups, and incident response, and it keeps member and payment data on your own infrastructure. GYM One is a self-hosted PHP and MySQL application installed through its own installer, and wger self-hosts with Docker Compose. The risk is the owner becoming the accidental sole administrator: for billing and access control, downtime hits the business directly, so document and test your restore steps before going live.
How should staff permissions be set up?+
Use roles that match real gym jobs rather than a blunt admin-and-user split. Front-desk staff usually need check-in and payment access but not financial reports; trainers need attendance and bookings but not member billing; managers need refunds and reporting. Audit logs matter too, so a canceled membership, an edited waiver, or an issued refund can be traced to a person. Confirm how granular the roles are before you give several staff members shared access.
Does wger actually manage a gym, or just workouts?+
wger is primarily a workout and fitness manager: custom routines with automatic weight progression, nutrition logging against the Open Food Facts database, body-weight and measurement tracking, and progress photos, exposed through a REST API and mobile apps. It includes basic multi-user gym management, but not the billing, ticketing, and access-control depth a front desk needs. Use it to give members and trainers a training platform, and pair it with dedicated management software if you also need to run operations.