a gym management platform for local fitness centers and their members
Estimated monthly cost at the usage scale below — billed by actual usage
1.20 req/s
Peak Concurrency
22.43 MB
Database Storage
39.06 MB
Object Storage
10.3 GB
Monthly Outbound Traffic
What is this app
A comprehensive gym management system that allows members to browse class schedules, book sessions, and track their attendance. It serves gym owners and trainers by providing tools for scheduling and membership tracking, ensuring a seamless operational flow for fitness businesses.
As a member, I can browse the class schedule to see available sessions.
As a member, I can book a specific class session if there is capacity.
As a member, I can view my booking history and upcoming classes.
As a trainer, I can view the roster of members for my assigned sessions.
As an admin, I can create new classes and schedule sessions.
As an admin, I can update user membership tiers and expiry dates.
visitors
Prospective members browsing class schedules before signing up.
members
Registered gym members who book classes and track progress.
trainers
Staff responsible for leading sessions and viewing rosters.
Requirements to minimum viable plan to cost
Momen doesn't give a vague quote: it first sizes the project's actual demand for each capability and resource, then costs each item out.
The numbers in the "Project demand" column below — their scale assumptions and derivations — are detailed in Scale & sizing.
Minimum viable plan
BASIC
The BASIC plan is the minimum requirement for a professional web application that needs a custom domain, persistent public access, SEO, and the removal of platform watermarks. Since the project information was not specifically detailed, this represents the standard entry-level plan for a functional public project.
See the capability-by-capability assessment ▾
PROJECT DEMAND
ALLOWANCE PROVIDED (COMPOSITION)
Basic
Basic
()
39
not purchased
()
0
Database storage add-on
10GB × 1/year, amortized monthly
()
8.33
Object storage
add-on
not purchased
()
0
Outbound data transfer add-on
500GB × 1/year, amortized monthly
()
2.92
AI points add-on
not purchased
()
0
plan + add-ons · usage-based · no development cost
Your options for this project
In the table below, the "monthly infrastructure" for the self-built / AI routes is derived from the AWS list prices shown below, sized against this project's actual usage.
2 × t4g.large × 730h
EC2 t4g.large → 98.11
2 × db.m6g.large (Multi-AZ) × 730h
RDS PostgreSQL db.m6g.large → 232.14
0.02 GB-month
RDS gp3 storage → 0
0.04 GB-month
S3 Standard → 0
0.00 GB (first 100GB free)
Internet egress → 0
Total ≈ $ / mo
Pure cloud resources
DEVELOPMENT COST
MONTHLY CLOUD INFRA ($/MO)
MONTHLY TOTAL
(INFRA + OPS)
Traditional outsourcing / self-built
≈ $330
Per AWS usage sizing above
≈ $2330
Infra $330 + ops ~$2,000
4-6 months
5 / 5
AI coding (Cursor, etc.)
≈ $330
Per AWS usage sizing above
≈ $1830
Infra $330 + ops ~$1,500
3-6 weeks
5 / 5
AI full-stack generators (Lovable/Bolt/v0)
≈ $330
Per AWS usage sizing above
≈ $1830
Infra $330 + ops ~$1,500
hours
3 / 5
Off-the-shelf SaaS / vertical solution
N/A
≈ $16,000+
Per-seat pricing, tens of thousands of users
days
1 / 5
Momen
Recommended
$50
All-in: egress / storage / auto-scaling included
$50
hours
5 / 5
Servers, databases, traffic and storage are inherent infrastructure costs for this project — you pay them whether you outsource, use Cursor or Lovable, or build it yourself (self-built runs ≈ $441/mo at AWS list prices, often more), plus the extra dev and ops staff. Momen bundles all of it into $368/mo all-in and removes the need for an ops team.
The frontend can be generated with AI tools (Cursor, Lovable, etc.); the hard part is the backend — auth, database, scaling, data security and ops. Momen delivers a production-grade backend as a BaaS: keep the vibe-coding speed on the frontend, while the backend runs on proven infrastructure — reliable, with no self-hosting or ops.
What scale this estimate assumes, and how the numbers are derived
Cost depends heavily on usage volume. First see the key assumptions and business scenarios this estimate uses, then the full calculation derived from each scenario for every resource — all adjustable to your real situation.
Based on a typical gym chain with 5 locations and approximately 1,000 members per location, plus staff and trainers, the total user base is estimated at 5,100.
We assume a standard linear-growth SaaS model for a gym management platform. While gyms have existing members, digital adoption usually ramps up over several months. Therefore, 225 days represents the equivalent full-load duration for the past year.
Daily Member Routine
Pre-Class Roster Peak
Visitor Browsing Routine
30
times/month
We assume a flat, daytime operational window for members to browse the schedule and manage bookings. An 8-hour window (28,800 seconds) occurring daily (30 times/month) covers the vast majority of routine member traffic. This scene is characterized by 'weak assembly' where users arrive independently.
Main impact:
The scenarios above set the assumptions for each resource; below is the full calculation based on those assumptions. Click to expand each item.
How this app works
What exactly does this budget support? Broken down by business scenario, showing the pages, data tables, automation flows and AI
assistant behind each one.
A member browses the available classes, views session times, and books a spot.
A trainer checks who is attending their upcoming sessions.
page
data_table
ai_agent
action_flow
Class Schedule View
Publicly accessible schedule of classes and session times.
Session Detail View
Detail page for a specific session with instructor info and booking button.
Trainer Roster View
Dashboard for trainers to see their assigned classes and students.
What you might want to know about this project
The Q&A below is generated by AI based on this project's type, features and scale.
What factors most impact the system's resource consumption?
Can I upload multiple photos for each gym class?
Copy to discuss with AI
Challenge & re-estimate