ESS Mobile Office Manager

Overview

ESS in this market is Expert Service Solutions, not “Enterprise Service Software.” The company says Anita Seymour founded it in 2003 to improve communication between field-service employers and workers. Its current address is in Poway, California. The live product site identifies elevator businesses as a core market and shows customer references from elevator and overhead-door contractors.

The product line has two connected parts. Mobile Office Manager, usually shortened to MOM, is the browser-based ERP for office and management workflows. Mobile Service is the field application for iOS and Android. The distinction is important when comparing ESS with products that use one name for the entire suite: a quote should state whether both products and every required module are included.

Pricing

ESS does not publish paid subscription prices, implementation fees, or seat minimums. The official product pages offer a free-trial request, and the vendor has described that trial as covering the full ERP and mobile application rather than a restricted edition. Buyers should verify the current trial length and terms because the detailed trial article is older than the current product pages.

Request an itemized quote for MOM users, Mobile Service users, implementation, data migration, custom work, training, support, payment processing, and integrations. Also clarify whether future updates and customizations are included or separately billed.

Key capabilities

Mobile Office Manager covers drag-and-drop scheduling, proximity-based dispatch, repeat-call identification, project and contract management, job costs, budget-versus-actual analysis, audit trails, recurring-project templates, customer and equipment history, multi-location customers, CRM opportunities, estimates and proposals, multi-warehouse inventory, purchase orders, accounts payable and receivable, journal entries, ledger reports, invoices, payments, and custom reporting dashboards.

Mobile Service extends the workflow into the field. Technicians can receive and prioritize tickets, send real-time status updates, work offline, use GPS and route optimization, capture signatures and photos, record recommendations, and send invoices. The official site states that the app is compatible with iOS and Android. Google Maps is a specifically documented integration in MOM; the mobile page also promises third-party integrations without publishing a current connector catalog.

Strengths and limitations

ESS’s strength is the amount of contractor workflow it covers without requiring a separate generic ERP. Accounting, dispatch, projects, inventory, CRM, equipment history, and mobile work sit in the same product family. Elevator customer references and product language support the vertical fit, while offline mobile operation is valuable in equipment rooms and other poor-connectivity environments.

The risk is public-information freshness and specificity. The product pages are live and trial requests remain available, but much of the detailed release content dates from 2017–2020. Pricing is private, the integration catalog is not public, and the vendor does not publish the same volume of implementation or security documentation as larger ERP providers. Those are diligence questions, not proof that the product is inactive.

When to pick ESS

Pick ESS when an elevator or specialty contractor needs both back-office ERP functions and a mobile field application, and wants to validate the full workflow in a trial. Test a ticket from dispatch through offline completion, time and material capture, signature, invoice, accounting, and reporting. Also test equipment history and a project with purchase orders and budget-versus-actual reporting.

Do not rely on the acronym in third-party comparisons. Confirm that the contract names Expert Service Solutions, Mobile Office Manager, and Mobile Service, and that the quoted package includes the capabilities shown. Contractors that need very large multi-entity operations, a broad modern API marketplace, or independently documented security controls should compare larger ERPs and require ESS to answer those gaps directly.