FieldServiceOS vs Fill In Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FieldServiceOS
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FIELD SERVICE MADE SIMPLE Schedule. Invoice. Done. FSOS (Field Service Operating System) is the complete business management app built exclusively for contractors, handymen, and field service professionals who need to focus on work, not paperwork. WHY FIELD SERVICE PROS CHOOSE FSOS Quote and Schedule in Seconds Create professional quotes (on-site or remote), convert them to jobs with one tap, and manage your entire schedule from your phone. Never double-book again with automatic conflict detection. Invoice Customers in Under 5 Seconds Complete a job and generate a professional PDF invoice instantly. Send via text or email. Track drafts, sent invoices, and payments - all from your pocket. Smart Scheduling Intelligence Real-time travel time calculations between jobs. Automatic departure suggestions so you are never late. See conflicts, gaps, and breaks in your schedule at a glance. Business Analytics That Matter Track revenue by day, week, and month. Monitor quote conversion rates. Identify your top customers. See your business performance with clear, actionable insights. CORE FEATURES Professional Quotes - Create on-site appointment quotes or remote estimates - Track sent, accepted, and declined quotes - Convert accepted quotes to scheduled jobs instantly - Full quote lifecycle management Smart Job Scheduling - Calendar and list views - Automatic conflict detection - Real-time travel time between jobs - Departure time suggestions - One-tap call, text, or navigate to customers Lightning-Fast Invoicing - Generate PDF invoices in under 5 seconds - Customizable line items - Send via text message or email - Save as draft and send later - Track invoice status (draft, sent, paid) - Original vs. final price comparison Business Intelligence - Revenue tracking (based on payment dates) - Quote conversion analytics - Job and invoice pipeline overview - Top customer insights - Time tracking and averages - Collapsible sections for focused viewing Customer Management - Store contact info and addresses - MapKit address autocomplete - Quick actions (call/text/navigate) - Full job and invoice history per customer PRICING Free Forever - Up to 5 customers - Unlimited jobs, quotes, and invoices - Full feature access (scheduling, analytics, invoicing) - No watermarks, no limitations on core features Pro - $14.99/month - Everything in Free - Unlimited customers - Cancel anytime WHO IT'S FOR Perfect for solo operators and small teams: Contractors, Handymen, Plumbers, Electricians, HVAC technicians, Landscapers, Cleaners, Pool service, and any field service professional. BUILT FOR IPHONE Designed exclusively for iPhone with smooth, responsive performance. Real-time cloud sync keeps your data safe and accessible across devices. PRIVACY FIRST Your customer data, job information, and business records are yours. We do not share, sell, or access your data. Anonymous accounts available - no email required. START FREE TODAY Download now and manage up to 5 customers completely free. Upgrade to Pro when you are ready to scale. Schedule. Invoice. Done. By downloading this app, you agree to the Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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.
- 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
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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
Screenshots
Verdict
The clearest difference is in-app purchases: Fill In Studio at none against FieldServiceOS's 1. Fill In Studio also leads on iOS requirement (14.0 vs 18.6). FieldServiceOS's advantage is update cadence (every 2 days vs every 2 weeks). On price, ads and device support 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
Both are free to download. FieldServiceOS sells 1 in-app purchase, starting at $14.99 per month. Fill In Studio asks for nothing beyond the download.
FieldServiceOS ships an update every 2 days, Fill In Studio every 2 weeks. Both last shipped on October 30, 2026.
| Parameter | FieldServiceOS | Fill In Studio |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 61 MB |
| Age rating | 17+ | 4+ |
| Developer | Aitor Recalde | Fill In LLC |
In-app purchases
FieldServiceOS
- PRO Monthly$14.991 Month
Fill In Studio
No in-app purchases
Questions
Is FieldServiceOS free?
Is Fill In Studio free?
Do FieldServiceOS or Fill In Studio have ads?
Which is updated more often, FieldServiceOS or Fill In Studio?
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