R-Pro is the complete field app for air-conditioning and refrigeration technicians. Diagnose the fault, keep a record for every customer, and bill the job — in 14 languages, with reference and records that work offline.

━ DIAGNOSE & FIX ━
• Real-measurement diagnosis — enter gauge & temperature readings; R-Pro computes superheat/subcooling and tells you if the charge, airflow or metering device is the problem. No guessing.
• Symptom search — describe what you see or hear in plain words; get probable causes ranked with repair steps.
• Error codes — thousands of codes across 62 brands, each with meaning and the fix.
• Manuals & refrigerant tables — maker manuals, thermostat/controller manual, P-T data for 108 refrigerants.
• Inspection checklists & refrigeration fundamentals.

━ RECORD & RUN YOUR BUSINESS ━
• Customer & equipment history — every site & unit on record: what you fixed, when, parts, refrigerant. Arrive anywhere and see its full history.
• Voice to work log — speak while you work; it becomes a structured job report. No typing on a ladder.
• Scan to capture — nameplate, business card or receipt into data in seconds.
• Quotes, invoices & receipts — issue from the field.
• Accounting — revenue, expenses & supplier purchases into net profit.
• Alarms & reminders; private field know-how notes.

━ ALSO ON YOUR OFFICE PC (ERP) ━
What you logged on the phone in the field is already on the office computer.
Nothing to install — open r-pro-erp.web.app in your PC browser and sign in with the same account as the app.
• Issue quotes and invoices on a full screen; review customer & equipment history
• Turn revenue, expenses and supplier purchases into a monthly ledger
• Written on the phone, finished on the PC — no exporting, no re-typing

━ BUILT FOR THE FIELD ━
• Offline reference & records — error codes, manuals, refrigerant tables, symptom search & your saved records work with no signal. (Voice, scan & photo diagnosis need a connection.)
• 14 languages — English, 中文, 日本語, 한국어, हिन्दी, Español, Tiếng Việt, ภาษาไทย, Bahasa Indonesia, العربية, Português, Français, Italiano, Deutsch.
• Automatic backup — records move to your new phone; sensitive data stays on device.

━ COMING SOON ━ Technician group chat · technician marketplace & job board.

Start free — reference tools are open with no account. A subscription unlocks the working tools (records, jobs, voice logs, scanning, billing, accounting), activated on our website (www.r-pro.app).

Disclaimer: R-Pro provides field reference material. It does not replace safety codes, manufacturer manuals, or a qualified technician's judgment.