Offline-first technical suite

The fault will not wait for the manual.

IndexOS puts guided diagnostics, fault codes, diagrams, and field tools into five vertical apps. Open it, search it, fix it. Even with no signal.

Free version available 350+ manufacturer codes 100% offline EUR 4.90/month New: IndexOS Azienda
5 vertical apps 147 diagnostic checks 350+ manufacturer codes EUR 49.00/year for all apps 100% offline-first
Portfolio

Five vertical apps, one method

Each app is built for a specific trade. Download the free version, use it on the job, and upgrade to Pro when you need the full library.

ElectraIQ Try free

ElectraIQ

Panels, drives, PLCs, sensors, and industrial networks.

154 manufacturer codes513 guided steps22 SVG diagrams
HorecaIQ Try free

HorecaIQ

Ovens, warewashing, refrigeration, and professional kitchens.

56 manufacturer codes207 guided steps16 SVG diagrams
HVACIQ Try free

HVACIQ

Air conditioning, boilers, VRF, heat pumps, and AHUs.

87 manufacturer codes6 domainsReference cards
ElectraIQ Try free

ElectraIQ

Panels, drives, PLCs, sensors, and industrial networks.

115 manufacturer codes184 guided steps6 SVG diagrams
HorecaIQ Try free

HorecaIQ

Ovens, warewashing, refrigeration, and professional kitchens.

115 manufacturer codes184 guided steps6 SVG diagrams
DataCIQ Try free

DataCIQ

UPS, batteries, CRACs, PDUs and server room monitoring.

115 manufacturer codes184 guided steps6 SVG diagrams
BASIQ Try free

BASIQ

Building automation, security, access control, and KNX.

85 manufacturer codes7 domainsReference cards
Comparison

Free vs Pro

The free version is usable in real fieldwork. Pro unlocks the full library for technicians who work on site every day.

Free

  • 3 core domains per app
  • 71 diagnosable faults
  • 5 SVG diagrams per app
  • Full technical tools
  • 100% offline
  • 245 faults and 350+ manufacturer codes
  • 84 interactive SVG diagrams
  • Manufacturer reference cards

Pro: EUR 4.90/month or EUR 49.00/year

  • All domains across the 5 apps
  • 245 faults · 350+ manufacturer codes
  • 84 interactive SVG diagrams
  • Manufacturer reference cards
  • Full technical tools
  • 100% offline
  • 1,385 guided diagnostic steps
  • 12 months of updates included
Explore

Inside each handbook

A closer look at the five vertical apps, their covered domains, failure types, and leading brands.

ElectraIQ - Industrial automation handbook

ElectraIQ

Industrial automation
Try free →

Decision trees

Step-by-step guided troubleshooting: every choice leads you to the most likely cause and the right fix.

Fault code mapping

Enter F30001, OC1, A0503: you immediately get the probable cause and corrective action.

Manufacturer cards

Key parameters, fault reset procedures, and diagnostic LEDs for Sinamics, ABB, Schneider, Danfoss, and more.

Interactive SVG diagrams

22 zoomable electrical diagrams for PLCs, motors, sensors, buses, and PV systems. Fullscreen on mobile.

Technical tools

4-20mA, 0-10V, PT100, motor current, winding imbalance. Fully offline.

Bilingual

Complete Italian and English coverage. Fault codes are universal, so the same content works anywhere.

SiemensABBSchneiderDanfossOmronMitsubishiSEWLenzePilzSickIFMEndress+HauserHuaweiSMA
HorecaIQ - Professional kitchens handbook

HorecaIQ

Professional kitchens
Try free →

Combi ovens

Probes, steam, limescale, fans, heating elements. Rational, Unox, Lainox, Electrolux, and more.

Refrigeration

Cold rooms, blast chillers, ice machines, compressors. Scotsman, Irinox, Coldline, Zanotti.

Dishwashers

Hood-type, conveyor, and glasswashers. Winterhalter, Hobart, Comenda, Meiko, Dihr.

Espresso machines

Boilers, groups, pumps, grinders. La Cimbali, La Marzocco, Faema, Nuova Simonelli.

Gas systems and hoods

Burners, thermocouples, gas valves, extraction, compensation, and fire safety.

207 guided steps

Real error codes for Rational, Winterhalter, La Cimbali, Scotsman, Unox, Hobart, and Irinox.

RationalWinterhalterLa CimbaliScotsmanElectroluxUnoxHobartIrinoxLa MarzoccoFaemaMarenoHalton
HVACIQ - HVAC and heating handbook

HVACIQ

HVAC and heating
Try free →

Single-split and multi-split

Inverters, refrigerant charge, probes, control boards. Daikin, Mitsubishi, LG, Samsung, Fujitsu, and more.

Condensing boilers

Ignition, water pressure, flue faults, pumps. Viessmann, Vaillant, Bosch, Immergas, Beretta, Baxi.

Heat pumps

Defrost, reversing valves, low pressure, outdoor coils. Air-to-air and air-to-water systems.

VRV/VRF and chillers

Variable refrigerant flow systems, chillers, cold rooms. Carrier, Trane, Climaveneta.

AHUs and ventilation

Filters, belts, humidifiers, dampers, coils. Full air handling units covered.

87 manufacturer codes

Real error codes for 12 HVAC manufacturers with probable cause and immediate action.

DaikinMitsubishi ElectricLGSamsungFujitsuViessmannVaillantBoschImmergasBerettaBaxiCarrierTrane
DataCIQ - Datacenter diagnostics handbook

DataCIQ

Datacenter and server room diagnostics
Try free →
🔋

UPS and batteries

Double conversion, bypass, VRLA strings, battery tests. Vertiv, APC by Schneider, Eaton.

❄️

CRAC and chilled-water plant

High/low pressure, filters and Δp, humidifier, leak detection, chillers and water treatment. Vertiv Liebert, Stulz, Trane.

⚡

PDUs and MV switchgear

Branches, phases, the 80% rule, A/B redundancy, transformers and MV protections. APC, Rittal, ABB, Schneider.

🏭

Generator sets and ATS/STS

Starting, fuel, temperatures, utility-generator switching and transfers. Cummins, Kohler, FG Wilson, Socomec, ASCO.

🚨

Fire protection and supervision

Detection, VESDA, inert gas, door fan test, BMS/DCIM alarms and communication loss. Siemens, Honeywell, Bosch.

📋

115 manufacturer codes

Real alarms for Vertiv, APC, Eaton, Stulz, Rittal and 15 more brands with probable cause and immediate action.

VertivLiebertAPC by SchneiderEatonStulzRittalSocomecCumminsKohlerASCOCarrierTrane
BASIQ - Building automation handbook

BASIQ

Building automation and security
Try free →

Intrusion systems

Control panels, PIR sensors, keypads, sirens, communicators. Bosch, DSC, Honeywell, Risco.

Video surveillance

IP cameras, NVRs, DVRs, storage, networking. Hikvision, Dahua, Axis.

Access control

Badge readers, turnstiles, electric locks, door timeouts. HID, Paxton, Fermax.

Fire alarm

Smoke and heat detectors, control panels, fire brigade communication. Notifier, Bosch.

Gates and automation

Motors, photocells, remote controls, limit switches, barriers. Nice, Came, Faac, BFT.

Lighting and shutters

DALI, KNX, presence sensors, dimmers, shutter motors. ABB, Schneider, Siemens.

Bosch SecurityDSCHoneywellHikvisionDahuaAxisNiceCameFaacBFTNotifierRisco
Pricing

Upgrade to Pro when you're ready

Fixed subscription: one monthly or annual price for all apps.

✓
ElectraIQ

ElectraIQ

Included in subscription
  • All domains
  • 154 manufacturer codes
  • 513 guided steps
  • 22 SVG diagrams
  • 12 manufacturer cards
  • 12 months of updates
✓
HorecaIQ

HorecaIQ

Included in subscription
  • All domains
  • 56 manufacturer codes
  • 207 guided steps
  • 16 SVG diagrams
  • 16 manufacturer cards
  • 12 months of updates
✓
DataCIQ

DataCIQ

Included in the subscription
  • All domains
  • 115 manufacturer codes
  • 9 complete datacenter domains
  • UPS and CRAC topology diagrams
  • Italiano + English
  • 12 months of updates
✓
HVACIQ

HVACIQ

Included in subscription
  • All domains
  • 87 manufacturer codes
  • 6 full HVAC domains
  • Reference cards
  • Italian + English
  • 12 months of updates
✓
BASIQ

BASIQ

Included in subscription
  • All domains
  • 85 manufacturer codes
  • 7 BAS domains
  • Reference cards
  • Italian + English
  • 12 months of updates
EUR 4.90 /month

Cancel anytime · Secure Stripe payment · 14-day guarantee

New

IndexOS Azienda: the field walks into your office

A Windows console for coordinating technicians and office work. Voice notes, photos, notes and diagnoses from all five apps arrive in one job archive: from the first site visit to materials to order, job completion and handing data over to your business software.

📥

Jobs and work history

Collect what arrives from the field and organize each job by customer, site and equipment. Voice notes, photos, notes and diagnoses stay in the timeline, with a work history searchable from the office PC.

🎙️

Voice notes and AI assistance

Local transcription makes voice notes searchable. The included AI assistant helps review the job content and suggest materials to check, without typing out the technician’s notes again.

🔧

Materials and spare parts

Review parts suggested from the notes, complete quantities, codes and dimensions, and track order status. Export the list as CSV for your warehouse or the business software you already use.

📚

Import your company handbooks

Search error codes and fault cards from all five apps and add your own catalogs from Excel, ODS, CSV, JSON or SQLite databases. Map the columns and review the preview: duplicates are skipped and extra columns remain available to consult.

🤝

Paired technicians, Pro included

Pair each phone with a single-use QR code and revoke access when needed. Technicians keep using the apps they know, with Pro included in the company package: no shared accounts or passwords.

🔐

Archives, backups and integrations

Jobs and attachments stay on the company PC; transport from the field is end-to-end encrypted. Create full backups and export JSON and CSV, or connect your business software through the console APIs.

Pro of all five apps included for your technicians Up to 10 paired devices Windows 10 and 11 AI assistant included Built-in update checks
EUR 24.90 /month or EUR 249.90/year (2 months free)

Closed beta: the first companies try it free · price locked for the first 10 companies

Ask to join the beta
For technicians

Employed technician? Bring IndexOS to your company

When your company buys IndexOS Azienda, the Pro version of all five apps is free for you and your coworkers: no personal subscription, every content unlocked on the phone you use in the field.

📣

1. Forward the presentation

We prepared a short page for the decision maker: open it below and forward it. If you prefer, write to us and we'll send it to you.

🏢

2. Your company activates

The company activates IndexOS Azienda and pairs your phone with a QR code — no accounts, no passwords.

🎁

3. Pro is yours, free

Full domains, all manufacturer codes and unlimited AI assistant: included for as long as the company stays active.

Open the presentation to forward Or write to us

If your company doesn't buy, your personal subscription keeps working as always.

Download

Field apps, office console

All five apps: EUR 4.90/month or EUR 49.00/year. IndexOS Azienda is the separate package for the office PC, with Pro included for paired technicians.

1

Google Play Store

IndexOS is available on Google Play: download it and you're ready on Android phones and tablets.

Get it on Google Play Available now
2

Immediate PWA

Open the PWA on phone or desktop and keep working offline.

Open ElectraIQ → Open HorecaIQ → Open HVACIQ → Open DataCIQ → Open BASIQ →
3

App Store

IndexOS is available on the App Store: download it and you're ready on iPhone and iPad.

Download on the App Store Available now
4

IndexOS Azienda for Windows

One console for all verticals: install it on the office PC, activate your company code and pair technicians’ phones with a QR code. Jobs, voice notes, materials and handbooks in the same archive.

Download Azienda installer ↓
Frequently Asked Questions

Common questions

Download the app, open the link, and start using real free content right away: 3 core domains per app, 71 diagnosable faults, 5 SVG diagrams per app, and all the technical tools. It works offline with no registration. When you need the full library, you can upgrade with one click.
Right after payment you are redirected to a page with the links to your apps. You also receive an email with the same links. Open the link on your device and the app is ready. No app store download required.
No. Every app is independent. You can use just one for free or upgrade only the ones you need. With an IndexOS subscription you get access to all 5 apps for EUR 4.90/month or EUR 49.00/year.
Yes. Fixed monthly plan EUR 4.90 for all apps, or fixed annual plan EUR 49.00. Cancel anytime.
Yes. All apps are offline-first PWAs. Content, diagrams, tools, and manufacturer cards work without a connection. Ideal for plants, kitchens, boiler rooms, and technical spaces without wifi.
You can open the link on any device: smartphone, tablet, or desktop. The app installs like a home-screen icon and keeps working offline on each device.
ElectraIQ: Siemens, ABB, Schneider, Danfoss, Omron and more. HorecaIQ: Rational, Winterhalter, La Cimbali, Rancilio, Victoria Arduino, Egro, Embraco, Scotsman and more. HVACIQ: Daikin, Mitsubishi, LG, Samsung, Viessmann, Vaillant, Bosch and more. DataCIQ: Vertiv/Liebert, APC by Schneider, Eaton, Stulz, Rittal and more. BASIQ: Bosch Security, DSC, Honeywell, Hikvision, Nice, Came, Faac and more.
The free version is the trial: you use it in the field with real content. If you upgrade to Pro and it does not fit your workflow, you have a 14-day money-back guarantee. Write to info@indexos.it.
It is the Windows console connecting technicians with the office. It collects voice notes, photos, notes and diagnoses by job, transcribes voice notes and helps prepare materials and spare parts with the included AI assistant. Search the app handbooks, import company catalogs from Excel, CSV, JSON or SQLite, and send data to your business software through exports or APIs. Archives and backups stay on your PC; you can also check for new versions from the console. It costs EUR 24.90/month or EUR 249.90/year, with Pro included for the company's technicians and up to 10 devices. The beta is closed: the first companies try it for free. Write to info@indexos.it to take part.
No. The package includes the Pro version for the company's technicians: once your phone is paired with the console, Pro is active with no personal fee. If your company doesn't buy, you can still use the free version or subscribe on your own as always.

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