R-Pro — the field app for air-conditioning and refrigeration technicians

Diagnose the fault, keep a record for every customer, and bill the job — in 14 languages, offline, from your phone. USD 9.99 per month. The reference tools are free forever.

What R-Pro does on site

• Real-measurement diagnosis — enter what your gauges actually read (high side, low side, suction and liquid line temperatures). R-Pro calculates superheat and subcooling and ranks the likely causes: undercharge, overcharge, metering restriction, flooding, dirty condenser, starved evaporator, non-condensables, compressor wear.
• Symptom search — 565 documented fault cases with cause, check and fix, including cascade (two-stage ultra-low temperature) systems that most references skip.
• Manufacturer error codes — 1,879 codes across 62 brands (Samsung, LG, Daikin, Mitsubishi, Carrier, Gree, Midea, Hitachi, Panasonic, Toshiba, Bosch, York and more), each linked to the maker's service manual.
• Refrigerant pressure-temperature — 108 refrigerants generated from CoolProp (NIST REFPROP-grade equations of state). Bubble and dew pressures are separate, so glide on zeotropic blends like R-407C is handled correctly.
• Control panel and schematic reading — photograph a wiring diagram, a control panel, a contactor or a terminal block. R-Pro lists the parts it can see and the terminal markings to put your meter on (coil A1-A2, main contacts 1/L1-2/T1, overload trip 95-96) with what to measure and what a good reading looks like. Each part carries a confidence level; it says plainly when a picture is not electrical at all.
• 176 field tips from working technicians, surfaced automatically with the diagnosis.
• Thermostat and controller manuals, inspection checklists, and parts reference.

What R-Pro remembers for you

• Customer and equipment history — which machine at which site, what you did, what the pressures were. Three years later it is still there.
• Voice work log — speak on the drive home; R-Pro fills in the job sheet, parts and amounts.
• Estimates, invoicing and accounting — revenue, expenses and net profit, not just paperwork.
• Photo capture for nameplates, receipts and business cards, read into fields automatically.
• Backup and sync so a new phone does not mean starting over. A companion PC-side ERP runs the office.

Works with no signal

Machine rooms rarely have coverage. Error codes, refrigerant tables, manuals, field tips, checklists and every record you saved all open offline; they sync when you have signal again. The AI features (photo scan, AI diagnosis, schematic reading) need a connection because they call a server.

Price

USD 9.99 per month, or USD 8.99 with anonymous data sharing. Six tools stay free forever and need no login: symptom search, error codes, refrigerant P-T, manuals, field tips and checklists. You pay only when you want to keep records.

Fourteen languages

English, Korean, Chinese, Japanese, Spanish, Hindi, Vietnamese, Thai, Indonesian, Arabic, Portuguese, French, Italian, German — the technical data is translated, not only the menus.

How R-Pro compares

ColdSnap costs USD 29 per month and is built around US field-service management — dispatch, team management, EPA refrigerant logging — in English only. R-Pro is USD 9.99, runs in 14 languages, and carries reference depth ColdSnap does not: 1,879 error codes across 62 brands, 108 refrigerants from CoolProp data, and control-panel reading. ColdSnap suits a US shop running several trucks; R-Pro is built for the technician doing the work, anywhere in the world.

Where to get it

On Google Play as HVAC Refrigeration Repair App (package app.rpro), or open www.r-pro.app on a phone and install it as a web app. Same product either way. Built and operated by Refrigeration and Air Conditioning Doctor. Support: support@r-pro.app

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