TECH iOS APP · REX AI BUILT IN

Rex rides shotgun. In every tech's pocket.

A native iOS app for iPads in vans — not a mobile website shrunk down. Rex AI on every screen: voice-to-diagnosis, data plate scan, parts recommendations, compatibility checks. Plus offline sync, signatures, payments and GPS.

Meet Rex AI →

📱 Native iOS (TestFlight + App Store) Rex

Rex on every screen ✈️ Works offline

Today · Mike R.9:42 AM

Morning, Mike!Rex has 7 jobs queued · est. $4,820

7Jobs

$4,820Target

2Members

Johnson · AC No CoolPriority · Rex pre-diagnosed

10:00

🔧

Chen · MaintenancePlatinum member · tune-up

11:30

💡

Reed · Estimate17yr system · replacement opp.

1:15

Rex is on every screen

The AI tech is with every tech.

Not a chatbot you have to open. Rex is baked into every job, diagnosis, estimate, invoice and photo — in-line where the work happens.

Data Plate Scan

Tech points the iPad camera at any data plate. Rex reads make, model, serial, age, refrigerant type — even on faded plates.

REX AI

Voice-to-Diagnosis

Tech rambles into the iPad. Rex rewrites it as a professional customer-facing diagnosis with recommendations.

REX AI

Parts Recommendations

Rex reads symptoms, suggests parts from your pricebook, routes to correct vendor with warranty compliance.

REX AI

Compatibility Check

Rex blocks wrong-sized coils, mismatched tonnage, wrong breakers before the order goes out. Kills return trips.

REX AI

Equipment Intelligence

Spots replacement opportunities automatically from equipment age + service history. Flags on the job list.

REX AI

Tip-of-the-Day

Rex surfaces trade-specific tips, known-issue alerts and callback-prevention nudges right when the tech needs them.

REX AI

Built for the field

Not a responsive website. A real iOS app.

📱

Native iOS (TestFlight + App Store)

Built in Swift / Capacitor. iPads and iPhones. Background location, camera integration, push notifications — the stuff web apps fake.

✈️

Full offline mode

Basement call with no signal? No problem. Everything syncs when the tech gets reception back.

✍️

On-screen signatures

Customer signs estimates, invoices and service forms directly on the iPad. No clipboards. No paper.

💳

In-field payments

Card, cash, check, financing. Customer pays before the tech leaves the driveway.

📦

Truck inventory

Real-time stock on the tech's iPad. Requisition new parts with one tap. Ledger audits what every truck's carrying.

📸

Photo-driven workflow

Every job has before/after photos. Tagged to equipment, attached to the invoice, ready for the auto-drafted social post.

Native vs responsive web

Why native matters on a 300-job week.

Capability	ONEREQ PRO iOS	ServiceTitan	Housecall Pro	Jobber
Native iOS app (TestFlight + App Store)	Yes	Yes	Yes	Yes
Rex AI assistant on every screen	Yes	No	No	No
Camera AI data plate scan	Yes	No	No	No
Voice-to-text + AI diagnosis rewrite	Yes	No	No	No
AI compatibility check at order	Yes	No	No	No
Background GPS tracking (built-in)	Yes	Add-on	Limited	Limited
Full Comfort Advisor presentation on iPad	Yes	Partial	No	No
Truck inventory + requisitions on mobile	Yes	Yes	No	No
Offline mode (full CRUD)	Yes	Partial	Partial	Partial
Daily dashboard as tech home	Yes	Partial	Partial	Partial
Onboarding time (typical)	14 days	3–6 months	4–8 weeks	2–4 weeks

Rex rides shotgun. In every tech's pocket.

The AI tech is with every tech.

Data Plate Scan

Voice-to-Diagnosis

Parts Recommendations

Compatibility Check

Equipment Intelligence

Tip-of-the-Day

Not a responsive website. A real iOS app.

Native iOS (TestFlight + App Store)

Full offline mode

On-screen signatures

In-field payments

Truck inventory

Photo-driven workflow

Why native matters on a 300-job week.

See Rex in your tech's pocket.