Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

AOS review

#34 of 49 in Contractor Accounting Software

AOS unifies pay applications, job costing and compliance for mid-market contractors.

5.7/10Editor score
Visit AOS
AOS5.7 Visit AOS

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

AOS is a cloud construction operating system for general contractors, subcontractors, owners, architects and residential builders. It keeps project management, RFIs, submittals, schedules, change orders, daily logs, pay applications, accounts payable, subcontract administration and closeout on a shared project record. For mid-market GCs, the product centers on pay-app preparation, retainage, project cost control and compliance workflows, with web, iOS and Android access plus an API.

Published plans show a $500-per-month Beta bundle for GCs and subcontractors, covering project management, pay apps, accounting and AP, closeout, a subcontract portal and search. It supports up to 50 active projects during beta and has no per-user fees during beta. Optional monthly modules include Payroll for $500, Accounting & AP for $1,000, Estimating & ITB for $500, Sub Compliance for $200, Compliance Pro for $499 and Residential Builders for $599. These add certified payroll, invoice matching, estimating, document expiry controls, lien-waiver registry functions or residential workflows, depending on the module.

AOS fits teams that want one system for field records, financial controls and subcontractor administration. Integrations include NOAA Weather, email and SMS delivery, Blue Notary, platform API keys and event webhooks. Compliance features include two-factor authentication and SSO/SAML; the vendor describes its controls as SOC 2-aligned rather than SOC 2 Type II certified. Support is listed through email, and some capabilities—including a phone field app and richer cash or owner tools—are available on request. Choose AOS when pay-app, retainage, AP approval and WIP reporting are central; consider alternatives if you need a fully mature, broadly certified platform today.

AOS pros and cons

  • Where it wins
    • Retainage-enabled pay applications with lien-waiver tracking
    • Job-cost reporting compares budget, commitments and actuals by cost code
    • API keys and event webhooks support connected workflows
  • Where it doesn't
    • The product is in open beta, so workflows may still evolve
    • The core bundle starts at $500 per month before paid add-ons
    • AOS is SOC 2-aligned but not SOC 2 Type II certified

AOS fact sheet, pricing and score →

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated · How we research and update