Free loyalty program and back office for nail studios
The next set is already in their calendar. Make it easy to come back to you.
Gel and acrylic sets need an infill every 2 to 3 weeks. That short cycle is your strength, and it is easy to break.

Short answer
Is there a free loyalty app for a nail studio?
The infill cycle
Clients drift to the cheaper studio
A new studio opens two streets away, with infills $5 cheaper.
Your client tries it once, between two of your appointments.
If the set looks fine, they simply do not rebook with you.
On a 3-week cycle, two missed infills is six weeks of income gone without a sound.
35
days, then Slipping away
KANJIN uses 35 days for a nail studio. That is about two missed infills, before a client settles in somewhere else.

Free calculator
Should you match the cheaper studio’s price?
Taking $5 off every infill costs more than most owners expect. Enter your price, the discount and your margin, and compare it with giving a few free extras to the clients who come most often.
What is left after food and drink cost, as a % of sales
The offer you are thinking of running
What one free visit is worth to a guest
A 20% discount costs
$8,000
every month
10 free visits cost
$84
$8.40 each
To break even on that discount you need 40% more customers than you have today. Not more sales: more customers, every month the discount runs.
For what that discount costs you each month, you could give 952 free visits, one each to a creator who posts about you.
A percent discount comes straight out of profit. Your food cost does not fall when you cut the price. So a 20% discount costs 20% of sales, not of margin. A free visit costs only what you hand over: $8.40 of ingredients, not the $28 menu price. We assume the discount does not bring in more sales.
An example
Cutting $5 off every infill
A studio does 60 infills a week at $45.
Cutting $5 off every one costs $300 a week, or about $1,300 a month.
A nail art upgrade every 8 visits costs about $3 in product and 10 minutes.
Sixty visits a week earn 7 or 8 upgrades, so about $22 a week in product.
The price cut goes to everyone, including clients who were never leaving. The reward goes only to clients who keep returning.

Stamp card
Stamp the infill, reward with art
8 stamps earn a free nail art upgrade.
Infills are the visit that keeps a client yours, so stamp each one.
Eight infills on a 3-week cycle is about 6 months.
Nail art costs minutes and a little product, and clients show it off.

What nail techs ask us
“Most of my bookings come through Instagram messages.”
Keep booking there. KANJIN stamps the visit while the client sits at your table. It does not take bookings.
“My techs are self-employed.”
Paying your team, in the back office, compares commission, table rent and hourly pay. It shows for nail studios at no cost.
“Clients lose paper cards.”
There is no paper card to lose. The stamps sit on the phone number they give.
See it at a counter
Watch “How to Make a Free Digital Stamp Card for Your Shop (No App Needed)” on YouTube
Nail studio questions
- How do I stop nail clients going to a cheaper studio?
- First, know who is late. The Stamp card screen shows each client’s last visit. After 35 days they move into Slipping away, while there is still time to reach them.
- Can I give a free infill after 10 visits?
- Yes. You set the stamps, from 3 to 20, and you write the reward. Stamps go on from the client’s phone number at the desk.
- Can I ask only my favorite clients for Google reviews?
- No. Choosing who to ask is called review gating, and Google does not allow it. KANJIN asks everyone who left an email and agreed, in the same words.
- Which nail services make the most money?
- Profit by item is in the free back office. It plots each service by margin and by how often it is booked. It shows which to promote and which to price up.
Also worth a look
Menu matrix
Sort your services by margin and by how often clients book them.
Review gap
Count the reviews needed to pass a nearby studio’s rating.
Stamps per reward
See what a free upgrade really costs you per visit.
Put a stamp card on your nail studio counter this week
Type your email and the form opens with it filled in. Nothing is sent from here.
No card, no time limit. Or open the form empty.