Comparison

FieldServiceOS vs AestraBook

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

Head to head
About

FieldServiceOS

Features
Read full description

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/

About

AestraBook

This platform helps independent business owners manage appointments and showcase their services online. Clients can easily view offerings, check availability, and book services through a customizable page.

Highlights
  • Customizable booking page
  • Service and pricing management
  • Appointment scheduling
  • Deposit collection
  • Availability control
  • Client experience enhancement
Read full description

Aestra is a modern booking platform built for independent business owners who want a better way to manage appointments and present their brand online. Create a beautiful, customizable booking page where clients can view your services, check your availability, review your policies, and reserve appointments in just a few taps. Whether you are a hairstylist, braider, barber, or esthetician, Aestra helps you stay organized while giving clients a polished booking experience that feels professional from the first click. With Aestra, you can: Create a custom booking page Showcase your services, pricing, availability, policies, and brand style in one easy-to-share link. Manage appointments from your phone View upcoming bookings, track client details, and keep your schedule organized wherever you are. Set services, prices, and durations Add your service menu with clear descriptions, pricing, deposits, and appointment lengths. Collect deposits for appointments Require deposits to help secure bookings and reduce last-minute cancellations or no-shows. Control your availability Set when you are available, block off time, and make it easier for clients to book the right appointment. Share a better client experience Give clients a clean, simple way to browse services, choose a time, and book without messy back-and-forth messages. Aestra is designed for independent business professionals who want their booking system to feel as polished as their work. Download Aestra and start building a booking experience your clients will love.

Screenshots

FieldServiceOS4 screens
AestraBook3 screens

Verdict

The call

The clearest difference is in-app purchases: AestraBook at none against FieldServiceOS's 1. AestraBook also leads on iOS requirement (15.1 vs 18.6). FieldServiceOS's advantage is update cadence (every 2 days vs every 9 days). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FieldServiceOS sells 1 in-app purchase, starting at $14.99 per month. AestraBook asks for nothing beyond the download.

UpkeepUpdate frequency

FieldServiceOS ships an update every 2 days, AestraBook every 9 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
FieldServiceOS versus AestraBook: the parameters behind the verdict, then further details
ParameterFieldServiceOSAestraBook
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 9 days
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.615.1 — better
Further details — not scored
Size22 MB43 MB
Age rating17+4+
DeveloperAitor RecaldeDVNTND LLC

In-app purchases

1 purchases

FieldServiceOS

Subscriptions1
  • PRO Monthly$14.991 Month
None

AestraBook

No in-app purchases

Questions

Is FieldServiceOS free?
FieldServiceOS is free to download, with in-app purchases available.
Is AestraBook free?
AestraBook is free to download, with no in-app purchases.
Do FieldServiceOS or AestraBook have ads?
Neither FieldServiceOS nor AestraBook shows ads.
Which is updated more often, FieldServiceOS or AestraBook?
FieldServiceOS ships an update every 2 days, and AestraBook every 9 days. Most recently, FieldServiceOS was updated on October 16, 2026 and AestraBook on October 7, 2026.

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