Comparison

Fill In Studio vs Petso Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fill In Studio

This app helps fitness studios and gyms fill empty class spots by connecting them with local clients seeking last-minute bookings. Easily post classes, create discounted deals, and manage all your bookings and payments securely.

Highlights
  • Studio dashboard for bookings and revenue
  • Post classes with details and photos
  • Create flash deals for last-minute openings
  • Manage class bookings and attendee lists
  • Secure Stripe Connect payouts
  • Instant notifications for new bookings
Features
Read full description

Fill In Studio is the companion app for fitness studios and gyms on the Fill In platform. Post classes, manage bookings, create flash deals, and grow your business — all from your iPhone. THE FILL IN OPPORTUNITY Every empty spot in your class is lost revenue. Fill In connects you with a community of fitness enthusiasts actively looking for last-minute classes near them. When you have openings, they're ready to book. HOW IT WORKS 1. POST your classes with details, pricing, and photos 2. SET your "Fill In" price (discounted rate for last-minute bookings) 3. CREATE flash deals when you want to fill spots fast 4. WATCH bookings roll in from nearby fitness seekers Fill In handles everything — payments, notifications, and customer communication. You focus on delivering great workouts. KEY FEATURES • STUDIO DASHBOARD — See your bookings, revenue, and active deals at a glance • POST CLASSES — Create classes with descriptions, photos, pricing, and capacity • FLASH DEALS — Offer time-sensitive discounts to fill empty spots quickly • CLASS TEMPLATES — Save your recurring class types for one-tap posting • MANAGE BOOKINGS — View who's coming to each class • EDIT & CANCEL — Update class details or cancel with automatic attendee notifications • ANALYTICS — Track performance, popular classes, and earnings over time • STRIPE CONNECT — Secure, automated payouts directly to your bank account INSTANT NOTIFICATIONS When you post a class or flash deal, Fill In automatically notifies nearby fitness enthusiasts who have enabled alerts. Your class gets visibility exactly when it matters. STRIPE CONNECT PAYOUTS Fill In uses Stripe Connect for secure, reliable payments. After completing a quick onboarding process, you'll receive payouts directly to your bank account. Track your earnings in the app and on the Stripe dashboard. WHO IS FILL IN STUDIO FOR? • BOUTIQUE FITNESS STUDIOS looking to fill last-minute openings • YOGA & PILATES STUDIOS wanting to reach new clients • GYMS offering specialty classes • INDEPENDENT INSTRUCTORS who teach at multiple locations • FITNESS ENTREPRENEURS growing their client base SUPPORTED CLASS TYPES - Yoga (all styles) - Pilates (mat & reformer) - HIIT & Circuit Training - Barre - Indoor Cycling / Spin - CrossFit - Strength Training - Dance & Cardio - Boxing & Martial Arts - And more! SIMPLE PRICING Fill In takes a small platform fee only when you get paid. No monthly fees. No setup costs. No risk. GET STARTED 1. Download Fill In Studio 2. Create your studio profile 3. Complete Stripe Connect onboarding 4. Post your first class It takes just minutes to set up. Start reaching new clients today! Need help? Contact our studio support team: studios@getfillin.com Learn more at: getfillin.com/studios

About

Petso Pro

Manage your pet care business efficiently with this app. Track bookings, client information, services, and finances. Generate medical records and invoices, and receive real-time alerts for seamless operations.

Highlights
  • Booking and calendar management
  • Client and pet profile tracking
  • Service and pricing setup
  • Invoicing and payment tracking
  • Medical record and certificate generation
  • Real-time notifications
Features
Read full description

Petso Pro is the simple, powerful way to run your pet-care business. Whether you're a vet, groomer, boarding facility, trainer, or dog walker, manage your bookings, clients, and finances from one app. Run your business from anywhere: • Bookings & calendar — accept, schedule, and complete appointments with a clear daily overview. • Clients & patients — keep client and pet profiles, history, and notes at your fingertips. • Services & pricing — publish your services with prices and per-service tax, synced to your account settings. • Invoicing — create and edit invoices, apply tax and discounts, and mark them paid in seconds. • Issue records — generate medical updates, certificates, and prescriptions, and share them straight to the owner. • Get paid & stay organised — track revenue and outstanding invoices as you work. • Real-time alerts — push notifications for new bookings, customer messages, and team activity. Built for pet professionals: Petso Pro connects directly to the Petso owner app, so the records and certificates you issue land instantly with your clients. Less admin, fewer no-shows, happier customers. Set up your business in minutes and start taking bookings today. Petso Pro is an auto-renewable subscription that unlocks the full professional platform for your practice, including all team members. • Monthly — $29.99/month approx ( depending on the jurisdiction ) • Annual — $289.99/year (save 20%) approx ( depending on the jurisdiction ) Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the period. You can manage your subscription and turn off auto-renewal in your Apple Account settings after purchase. Terms of Use (EULA): https://www.petso.io/documents/terms-of-service Privacy Policy: https://www.petso.io/documents/privacy-policy

Screenshots

Fill In Studio4 screens
Petso Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Fill In Studio at none against Petso Pro's 2. Fill In Studio also leads on update cadence (every 2 weeks vs every 2 months). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Petso Pro sells 2 in-app purchases, starting at $29.99 per month. Fill In Studio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Fill In Studio against 5.0 for Petso Pro. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Fill In Studio ships an update every 2 weeks, Petso Pro every 2 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Fill In Studio versus Petso Pro: the parameters behind the verdict, then further details
ParameterFill In StudioPetso Pro
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size61 MB44 MB
Age rating4+4+
DeveloperFill In LLCPetso BV

Customer experience

Fill In Studio

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Petso Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Fill In Studio

No in-app purchases

2 purchases

Petso Pro

Subscriptions2
  • Petso Pro1 Month trial$29.991 Month
  • Petso Pro1 Month trial$299.991 Year

Questions

Is Fill In Studio free?
Fill In Studio is free to download, with no in-app purchases.
Is Petso Pro free?
Petso Pro is free to download, with in-app purchases available.
Which has better reviews, Fill In Studio or Petso Pro?
Fill In Studio and Petso Pro are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Fill In Studio or Petso Pro have ads?
Neither Fill In Studio nor Petso Pro shows ads.
Which is updated more often, Fill In Studio or Petso Pro?
Fill In Studio ships an update every 2 weeks, and Petso Pro every 2 months. Most recently, Fill In Studio was updated on October 30, 2026 and Petso Pro on November 5, 2026.

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