New gym membership models are shaking up the fitness scene.

From day passes to monthly memberships, gym rats can explore different health clubs and fitness centers -- and save some money to boot at NYC's increasingly pricey boutique studios -- while getting in shape.

The field is quickly becoming a crowded one. Here are six to know.

 

 

MONTHLY MEMBERSHIPS

 

ClassPass

Since launching in 2013, ClassPass has grown to nearly 400 studios -- with more added seemingly every day. A monthly membership gives you access to boutique fitness classes across the city specializing in barre, cycling, strength training, yoga and more. Take as many classes as you want a month, but up to three at any particular studio. $99 monthly membership; classpass.com

FitReserve

This premium monthly fitness membership provides membership access to more than 2,500 classes a week in Pilates, rowing, barre, spinning, yoga, CrossFit and more at more than 60 NYC studios. The service is invitation-only and members can attend each studio up to four times a month. $149/10-pack; $249/20-pack; fitreserve.com

allfit NYC

Pick a membership based on your workout frequency with this monthly membership, which is launching this spring. Plans range from 10 classes to unlimited access each month to more than 20 fitness centers in the city. $80/up to four visits a month, $150/up to 10 visits a month, $240/unlimited visits a month; allfitnyc.com

Fitmob

Put this one on your radar, too. The fitness startup, which connects members to gym, studios and trainers, launched in San Francisco last year before rolling out to other cities, including NYC sometime this year. The first 1,000 people to register get their first month for $1 when it does launch. $99/month for unlimited classes; fitmob.com

 

 

DAY PASSES

 

Fit Daypass

Don't want to commit to a monthly membership at a gym? Fit Daypass is all about, yes, day passes. Get entry to nearly 20 gyms in the city, including the Sports Center at Chelsea Piers and Gleason's Gym. Starting at $10/day pass; fitdaypass.com

Gymsurfing

Buy gym passes on the go in NYC and beyond with this mobile app, geared with the traveler in mind. Just open the app, find a gym and book a day pass. Choose from more than 30 gyms in Manhattan, Brooklyn and Queens. Starting at $5/workout; gymsurfing.com