Comparison

DEFA vs Welding Heat Input Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DEFA

Control DEFA vehicle and home heating, security, and alarm systems remotely. Monitor temperatures, battery voltage, and receive alerts for theft or speed limit breaches. Manage multiple heating zones and integrate with car alarms.

Highlights
  • Remote engine and interior heater control
  • Monitor battery voltage and temperature
  • GPS tracking and theft alerts
  • Burglar alarm notifications
  • Control up to 6 heating zones
  • Weather forecast display
Read full description

With this app you will be able to remote control the following DEFA systems: - DEFA Link Hub with WarmUp and/or GPS Link - DEFA Bluetooth® Hub with WarmUp - DEFA Base Unit PRO - DEFA Base Unit DIY DEFA Link Hub gives you remote control possibilities of your DEFA WarmUp, Security, and Finder system in your vehicle, from anywhere in the world. You can also connect the Link Hub to your DVS90 car alarm system to get burglar alarm notifications. DEFA Bluetooth® Hub gives you local control of your DEFA WarmUp system in your vehicle. Only devices supporting Bluetooth® LE and using iOS 8.0 and newer can communicate with the Bluetooth® Hub. DEFA Base Unit PRO and Base Unit DIY gives you remote control possibilities of your DEFA Home heating and alarm system in your cabin or house, from anywhere in the world. WarmUp features: Turn engine and interior heater ON and OFF directly or by a timer. The system will automatically start pre-heating depending on outside temperature or according to fixed pre-heating times. You can also monitor whether the 230V mains cable is connected or not. With Link Hub you can monitor the battery voltage of the vehicle and get an alert when the battery voltage is low. You can also monitor inside and outside temperatures. With Bluetooth® Hub you can monitor the outside temperature and the battery voltage of the vehicle. GPS Link features: Be alerted if your vehicle is stolen (started and/or moved) or if your pre-configured speed limit is exceeded. You can also look up your vehicle on a map at any time. Base Unit PRO and DIY features: Control heating for up to 6 separate zones. You can set each zone to manual ON/OFF, thermostat or regulator modes independently. Turn burglar alarm ON/OFF. Remote control your Nobø thermostats directly. In addition, the weather forecast is displayed for your location. The system will monitor power outages, monitor up to 6 different temperatures, and a range of additional features. You can also connect wireless burglary detectors. All features are available through this app. Alerts are sent to your phone and/or email. Note! DEFA Link Hub and Base Unit products require a subscription. DEFA Bluetooth Hub does not require a subscription. All products require an installation of hardware. For more information see www.defa.com or ask your DEFA dealer.

About

Welding Heat Input Calculator

Features
Read full description

Welding Heat Input Calculator is a focused engineering utility for welding procedure qualification and production control. Enter arc voltage, current, travel speed, and thermal efficiency to calculate arc power (kW), arc energy (kJ/mm), and net heat input in both kJ/mm and kJ/in. The app is built for practical WPS/PQR verification with decimal-pad data entry, fast keyboard dismissal, and metric/imperial switching.

Screenshots

DEFA4 screens
Welding Heat Input Calculator3 screens

Verdict

The call

The clearest difference is price: DEFA at Free against Welding Heat Input Calculator's $9.99. DEFA also leads on iOS requirement (12.0 vs 26.2). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

DEFA is free to download; Welding Heat Input Calculator costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DEFA ships an update every 5 months, Welding Heat Input Calculator every 6 months. The most recent releases landed on June 11, 2026 and September 24, 2026 respectively.

Scorecard2 real differences · 8 level
DEFA versus Welding Heat Input Calculator: the parameters behind the verdict, then further details
ParameterDEFAWelding Heat Input Calculator
PriceFree — better$9.99
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better26.2
Further details — not scored
Size53 MB1 MB
Age rating4+4+
DeveloperDEFA ASShanghai Sheyuan Network Technology Co., Ltd.

In-app purchases

None

DEFA

No in-app purchases

None

Welding Heat Input Calculator

No in-app purchases

Questions

Is DEFA free?
DEFA is free to download, with no in-app purchases.
Is Welding Heat Input Calculator free?
Welding Heat Input Calculator costs $9.99, with no in-app purchases.
Do DEFA or Welding Heat Input Calculator have ads?
Neither DEFA nor Welding Heat Input Calculator shows ads.
Which is updated more often, DEFA or Welding Heat Input Calculator?
DEFA ships an update every 5 months, and Welding Heat Input Calculator every 6 months. Most recently, DEFA was updated on June 11, 2026 and Welding Heat Input Calculator on September 24, 2026.

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