Sparekey.io

Booking and door access for private gyms

Your private gym, open without you.

Customers book a slot, pay online and get a door code by SMS that only works during their booking. Nobody has to be on site.

€690 setup with 3 months included, then €109 a month

Get a free demoSee pricing

Interactive preview of the Sparekey admin with sample data: occupancy, reservations, door access, statistics and locations.

Occupancy

Free, held and booked slots of the locations.

North6/8 taken

South6/8 taken

Also: invoices, customers, promo codes, SMS templates, change audit

How it works

Simple for your customers. Hands-off for you.

Your customers

  1. Book a slot

    They pick a free time on your booking page. The whole gym is theirs for that slot.

  2. Pay online

    Through Stripe: cards, Apple Pay and Google Pay.

  3. Get a door code

    A PIN arrives by SMS right after booking. It opens the door only from the start to the end of their slot.

Interactive demo of the booking page your customers use: pick a day and time, pay and get a door code.

North

October 2026

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Monday 19 October

Cart: €191 item

You

  1. Set hours and prices

    Opening hours, slot length, prices by day and time, and discount codes.

  2. Get paid

    Payments go straight to your own account. No cash, no reception, no texting codes late at night.

  3. Keep an eye on it

    See every booking, occupancy and revenue for each location, and block time for cleaning when you need it.

What you get

Everything an unstaffed gym needs to run itself.

A code for every booking

Each booking gets its own PIN, valid from the start to the end of the slot. It goes out by SMS right after booking.

Backup code if the internet drops

If the internet is down and a new code can't reach the lock, the customer gets a stored backup code instead. Works with any lock.

Payments through Stripe

Customers pay with cards, Apple Pay or Google Pay. The money goes straight to your account.

Prices by day and time

Charge more at peak times and less off-peak, set prices for specific dates and hand out discount codes.

All your locations in one admin

Each location has its own opening hours, prices and doors. Add a new one yourself whenever you are ready.

Numbers you can act on

Revenue, occupancy and busy hours for each location, with a CSV export for your accountant.

Door access

Two ways to open the door.

Both work with time-limited codes.

Recommended

2N keypad + maglock

A keypad outside and a magnetic lock on the door, fitted by a professional door or access installer. Built for doors that open many times a day with nobody around.

  • Reliable for unattended operation
  • Hard for customers to tamper with
  • Needs an installer, plus power and internet at the door.
Read more
Alternative

Nuki smart lock

A smart lock with a keypad that fits on your existing door. Simpler and cheaper to start with.

  • Fits on many existing doors
  • Lower cost to start
  • It can't be secured well against tampering by customers.
Read more

Other locks with time-limited PIN codes: ask us.

Compare door access options

Pricing

Start for €690, the first three months included.

The setup includes the first three months of Operations. After that, a monthly fee with no minimum term: you cancel with one month's notice. Paid by bank transfer.

Included in the setup

  • Booking page in your language
  • Payments through Stripe
  • Connecting your door access
  • Several doors or a shared entrance
  • Testing before you open

Door hardware, its installation and Stripe fees are paid separately.

SMS are billed per message. Full pricing

Setup€690

One-off. Includes the first 3 months of Operations.

Operations€109 / month

From the fourth month. Hosting, maintenance, support, e-mails and the SMS gateway, with texts sent under your gym's name.

Each additional location€79 / month
Get a free demo

References

Private gyms already run on Sparekey.

Among them Chrám pohybu and Fithub. Customers book, pay and let themselves in without anyone on site.

Marek Andrášik
Marek AndrášikFounder

I build and run Sparekey, with almost 20 years in product development behind me. You deal with me directly, from the first call to launch and after.

LinkedInandrsk.cz

Setup

From first call to open doors in about a month.

  1. Demo call

    We go through your space, your doors and your country, and agree what to set up.

  2. We set it up

    Your booking page, prices and Stripe payments, with texts that arrive under your gym's name.

  3. Door access

    An installer fits the 2N keypad and maglock, or you mount a Nuki. We connect it and test the codes.

  4. Go live

    A few test bookings with real payments, then you open.

FAQ

What private gym founders ask first.

Do I need anyone on site?

No. Customers book and pay online, get their code by SMS and let themselves in. You manage bookings, prices and blocked times from the admin.

What if the internet goes down?

If a new code can't be stored in the lock, the customer gets a stored backup code instead, so they can still get in. This works with any lock.

Which doors and locks work?

We recommend a 2N keypad with a maglock, fitted by a professional installer. Nuki is a simpler, cheaper alternative, but customers can tamper with it more easily. Several doors or a shared building entrance are solved during setup at no extra cost. See door access options.

Who receives the payments?

You do. Payments go to your own account through Stripe, which we set up for you.

How long does setup take?

Plan about a month from the first call. Two things set the pace: your payment provider's approval and, for 2N, your installer's diary. Prices and test bookings fit inside that month.

Can I open more locations later?

Yes. You add them yourself in the admin, each with its own opening hours, prices and doors. Each additional location is €79 a month.

Demo and consultation

See it on a demo, then decide.

Tell us where you are with your gym and what you would like to know. We reply within 24 hours with the next steps, usually a free demo call where we go through hours, slots, doors and payments.

Send us a message[email protected]