Underboss for Health & Fitness Professionals

Focus on your clients.
Not whether
they’ve paid you.

For personal trainers, wellness professionals, nutritionists, and independent fitness professionals, the client relationship matters. Underboss helps keep billing from getting in the way. Record the service or session you provided and Underboss handles the revenue admin that follows — applying the right price, invoicing the client, tracking payment, sending reminders, and keeping your revenue records organized.

You take care of your clients. Underboss helps take care of getting you paid.

Start for free →See how it works

web.underboss.app

Today, Sep 28

Today · Sep 28 — 9 sessions scheduled

This Month

$11,260

↑ 6% vs last month

Outstanding

$890

3 invoices pending

Active Clients

2 new this month

Today’s Sessions

Marcus Webb

Personal training · 60 min

$110

Paid

Derek Osei

HIIT · 45 min · Session 4 of 10

$240

Paid

Priya Mehta

Strength · 60 min

$95

Reminder sent

Lisa Tanaka

Cardio · 45 min

$100

Paid

Built for client-based health and fitness businesses

Built for client-based health and fitness businesses.

💪

Personal Trainers

Record completed training sessions and let Underboss handle billing and payment tracking.

🧘

Yoga & Pilates Professionals

Keep individual sessions, private clients, packages, and payments connected.

🥗

Nutrition & Wellness Professionals

Track completed consultations and client-specific pricing without maintaining separate billing records.

🌿

Independent Coaches & Practitioners

Spend less time on payment administration and more time working with clients.

Most software starts with an invoice. Underboss starts with the service you provided.

Getting paid shouldn’t change the relationship

Getting paid shouldn’t change the relationship.

When you work one-on-one with someone, asking for an overdue payment can feel personal. Underboss makes it administrative instead.

Record the completed session and Underboss can:

💲

Apply the client’s correct rate

Keep different rates and arrangements connected to each client.

🧾

Create the invoice

Turn the completed session into billing without another administrative step.

💳

Track the payment

Know what’s been paid and what hasn’t.

🔔

Send reminders

Let Underboss handle routine payment follow-up instead of personally chasing clients.

📊

Keep your revenue organized

See what you’ve billed, collected, and are still owed.

Your attention belongs with your clients

Not with invoices, payment apps, spreadsheets, and overdue balances.
Record the service. Underboss takes it from there.

Client-specific pricing

Set different rates per client, session type, or package. Underboss applies the right price automatically — no manual calculation required.

Automatic invoicing

Every completed session generates an invoice. Clients receive it automatically. You never have to remember to send one.

Payment tracking

Cash, check, Venmo, card — every payment is matched to the right client and session. Your records stay current without manual entry.

Automated reminders

When a payment is overdue, Underboss follows up — not you. The awkward conversation before a session disappears entirely.

Revenue visibility

See what you’ve billed, collected, and are still owed — across all clients, in real time. No end-of-month reconciliation required.

Records that are always ready

Every session, invoice, and payment is logged automatically. Tax time isn’t a project — your books are current, clean, and organized when you need them.

“I used to dread following up on unpaid sessions — it felt like it undermined everything I was trying to do with my clients. Underboss handles all of it now. I haven’t had to ask for payment once since I signed up.”

Personal trainer & wellness coach, 28 active clients

Desktop & Mobile

One system. Every screen.

Underboss works on desktop and as a mobile app — so whether you’re between sessions at the gym or wrapping up for the day, your clients, billing, payments, and bookkeeping are always with you.

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web.underboss.app

Dashboard

Sessions

Reports

Clients

Team

Money

Dashboard

Today · Sep 28

Today’s sessions

Client	Session	Status	Amount
Marcus Webb	Strength · 60 min	Paid	$110
Derek Osei	HIIT · 45 min	Paid	$100
Priya Mehta	Strength · 60 min	Reminded	$110
Lisa Tanaka	Cardio · 45 min	Paid	$95

Get Started

Focus on your clients. Let Underboss handle getting you paid.

Record your sessions. Automate your billing. Track your payments. Know what you’ve earned.

Start for free →

Focus on your clients.Not whetherthey’ve paid you.

Built for client-based health and fitness businesses.

Getting paid shouldn’t change the relationship.

Not with invoices, payment apps, spreadsheets, and overdue balances.Record the service. Underboss takes it from there.

One system. Every screen.

Focus on your clients. Let Underboss handle getting you paid.

Focus on your clients.
Not whether
they’ve paid you.

Not with invoices, payment apps, spreadsheets, and overdue balances.
Record the service. Underboss takes it from there.