---
title: "G3 - Heat Input Calculator - Reviews, Revenue and Downloads in Canada | Apple App Store"
description: "If you calculate heat input in the field, you already know the problem. Online calculators are awkward on a job site, spreadsheets are easy to break, and manual calculations take time you do not have "
---

# G3 - Heat Input Calculator — Canada
> By Inspectors, For Inspectors

![G3 - Heat Input Calculator App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/af/a0/b3/afa0b3d6-06dd-a97a-badf-510c7d5a7146/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Unknown](https://apptail.io/developer/unknown-iidshb)
**Category:** Productivity
**Rating:** 5.0/5 (3 ratings)
**Price:** Free
**Bundle ID:** com.heatinput.app
**Store:** Apple App Store
**Country:** Canada
**Version:** 1.2.0 (released 2026-09-03)
**Original Release:** 2025-03-21
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ca/app/app/id6739266881)
**AppTail Page:** [https://apptail.io/app/g3-heat-input-calculator-Vxvv/canada](https://apptail.io/app/g3-heat-input-calculator-Vxvv/canada)

## G3 - Heat Input Calculator Description
If you calculate heat input in the field, you already know the problem. Online calculators are awkward on a job site, spreadsheets are easy to break, and manual calculations take time you do not have during an active inspection.

G3 is a purpose-built heat input calculator for welding inspectors and quality-control professionals.

Enter the voltage, amperage and travel distance. Start the built-in arc timer when the arc strikes and stop it when the pass is complete. G3 calculates the heat input and travel speed immediately, with a live readout throughout the pass.

Built by a working inspector and designed for real field conditions.

BUILT FOR

• CSA W178.2 and CWB welding inspectors
• AWS Certified Welding Inspectors
• CSWIP welding inspectors
• API 510, 570, 653 and 1169 inspectors
• Oil and gas, pipeline and pressure-vessel inspection
• Structural fabrication and shipyard quality control
• Welding supervisors, coordinators and quality personnel

CORE FEATURES

• Built-in arc timer—start when the arc strikes and stop when the pass ends
• Live heat-input and travel-speed calculations
• Root, Hot Pass, Fill and Cap pass selection
• Record multiple passes within the same weld
• Metric and imperial calculations
• Heat input displayed in kJ/mm or J/in
• Save weld records and review previous inspection entries
• Export professional PDF heat-input reports
• Core calculator works offline in remote field locations
• No profile required to use the core calculator
• Free to use

SMARTARC INTEGRATION

Registered users can access SmartArc through the G3 Control Hub. SmartArc is designed to connect with the G3 digital bridge-cam gauge and bring measurement data directly into the inspection workflow.

A free G3 profile is required to access SmartArc, saved inspection records and connected-gauge features.

BUILT FOR THE FIELD. READY FOR WHAT COMES NEXT.

G3 is the foundation of a growing quality-control documentation platform. Planned development includes expanded job histories, welder profiles, credential-specific documentation and deeper integration with SmartArc inspection hardware.

The core heat-input calculator will remain free.

WHAT INSPECTORS ARE SAYING

“Best heat input calculator ever. After using a number of heat input calculators in the field, I stumbled across G3. What a blessing in the field—usable offline, able to add welders for future projects, and the ability to speak to the developers to make suggestions. It’s the all-in-one tool needed for the inspection realm.”

— 5-star App Store review, Canada

## G3 - Heat Input Calculator Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d7/81/c6/d781c6c2-ef18-999c-beb4-3fd52983a17d/03-units.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ff/5f/6f/ff5f6f46-d353-c6ff-f597-2d504ef061f8/02-timer.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f5/6b/ae/f56bae28-b581-1dc4-5b04-ea8051b0b594/01-heat-input.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b5/a1/8f/b5a18f26-91d6-026b-47cc-a635b50af0a6/06-offline.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/7a/90/28/7a90286f-3a1d-8f08-b3d7-afc623691b59/04-entries.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/f6/2e/b9/f62eb9d7-121f-4b55-9150-1356bed9cb50/05-pdf-report.png/1242x2688.png)

## G3 - Heat Input Calculator Rating Breakdown in Canada
- 5 stars: 3 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## G3 - Heat Input Calculator Reviews in Canada

### ***** "Pirate"
Josh

As a full-time pirate, having an app that works offline is a must. Now I’m pulling up to the marina inspecting every weld imaginable like Transport Canada gave me a clipboard and too much authority. Clean app, easy to use, and seaworthy enough for Penticton.
-- JJthelakepirate, 2026-06-02

### ***** "BEST HEAT INPUT CALCULATOR EVER"
After using a number of heat input calculators in the field, I stumbled across G3. What a blessing in the field, usable offline, able to add welders for future projects, the ability to speak to the developers to make suggestions!! It’s the “all in one” tool needed for the inspection realm.
-- Trouble9191919191, 2025-12-03

[View all G3 - Heat Input Calculator reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)




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## G3 - Heat Input Calculator Available In
- [Canada](https://apptail.io/app/g3-heat-input-calculator-Vxvv/canada)
- [United Kingdom](https://apptail.io/app/g3-heat-input-calculator-Vxvv/united-kingdom)
- [New Zealand](https://apptail.io/app/g3-heat-input-calculator-Vxvv/new-zealand)
- [Saudi Arabia](https://apptail.io/app/g3-heat-input-calculator-Vxvv/saudi-arabia)
- [Taiwan](https://apptail.io/app/g3-heat-input-calculator-Vxvv/taiwan)
- [United States](https://apptail.io/app/g3-heat-input-calculator-Vxvv/united-states)

---

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