For personal trainers & coaches

Less admin.
More coaching.

JustFit trainer portal combines client management, programme assignment, invoicing and GDPR compliance in one platform.

No credit card needed for the trial
CLIENTS23 active
MJ
Mark J.
Week 4 · 10km programme
PRO
SR
Sandra R.
Strength · 3×/week
PRO
INVOICES · MAY 2026
€2,340
8 invoices sent · 0 outstanding
GDPR compliant
Invoices via Mollie
VAT administration
Encrypted client data
Made in the Netherlands

Everything you need

Built for the
modern trainer

From client intake to quarterly VAT overview — everything a personal trainer needs, without duct-taping three different tools together.

Clients

Client management

Everything about your clients in one place. Health intake, training programmes, progress and notes — securely stored and easy to access.

Detailed health intake with privacy levels
Link clients via QR code, invite link or email
Client card with training history and progress
Clients get automatic Pro access in the app
Programmes

Programme assignment

Create personalised training programmes, assign them to clients and track completion. Use the built-in exercise library or add your own.

306 exercises + custom exercises per gym
Session structures with sets, reps and rest
Clients train via the JustFit app
Progress reporting per client and session
Invoicing

Invoicing & payments

Send invoices, receive payments via Mollie and keep your payment overview — all without a separate accounting program.

Professional invoices with your own logo
Online payment via iDEAL, credit card and more
Automatic payment reminders
Monthly and quarterly overview
VAT & Tax

VAT administration

VAT module for Pro and Gym subscribers. Log incoming invoices, track your VAT position and export quarterly data for your tax return or accountant.

Log incoming VAT invoices (purchases)
Quarterly VAT overview for tax return
Exportable for your accountant
Clear split between input and output VAT
Privacy & GDPR

GDPR compliance

As a personal trainer you process special personal data. JustFit is built with GDPR compliance at its core — not as an afterthought.

Data Processing Agreement (DPA) built in
Per-client encryption (AES-256-GCM)
Audit log: who viewed or edited what, when
Client data access requests in one click
B2B2C

Pro for your clients

All clients of a paying trainer automatically get JustFit Pro in the consumer app — as a benefit of the trainer-client relationship.

Client gets running coach, cycling coach & Strava sync
Automatically active as soon as client is linked
Automatically expires when the relationship ends
No extra cost for the client

Fair pricing

Choose your plan

Cheaper than a separate invoicing tool and a GDPR register combined. And your clients get Pro for free.

Solo
24
per month · early bird
Later €29/month
Up to 10 active clients
Client management & programmes
Invoicing (Mollie)
GDPR / DPA built in
Pro access for clients
VAT module
Gym
99
per month · early bird
Later €149/month
Everything in Pro
Multiple trainers
Gym branding in the app
Custom exercise library

Ready to start?

30 days free.
No credit card.

Try the full trainer portal for 30 days. Cancel whenever you want — no obligations.