# HMI Draw, native HMI/SCADA development environment vs Calctronics

The clearest difference is rating: Calctronics at 4.0 against HMI Draw, native HMI/SCADA development environment's 3.0. Calctronics also leads on monetization model (free vs free with in-app purchases). HMI Draw, native HMI/SCADA development environment's advantage is review sentiment (53% vs 14%) and ads (none vs shown). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. HMI Draw, native HMI/SCADA development environment sells 3 one-off in-app purchases and Calctronics sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Calctronics holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 7 and 5 respectively. Written reviews complicate that: 53% of HMI Draw, native HMI/SCADA development environment's written reviews are positive against 14% of Calctronics's, so the app with the better star average is not the one people write more warmly about.

HMI Draw, native HMI/SCADA development environment ships an update every 6 weeks, Calctronics every 2 months. The most recent releases landed on June 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | HMI Draw, native HMI/SCADA development environment | Calctronics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (7 ratings)](https://appshunter.io/ios/app/hmi-draw-native-hmiscada-development-environment/id604708439/reviews) | **[4.0 (5 ratings)](https://appshunter.io/ios/app/calctronics-circuit-calc/id1583972990/reviews)** |
| Number of ratings | **7** | 5 |
| Positive reviews | **53.3% of reviews** | 14.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 18 MB | 35 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SweetWilliam, S.L.](https://appshunter.io/developer/324515283) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### HMI Draw, native HMI/SCADA development environment

[App page](https://appshunter.io/ios/app/hmi-draw-native-hmiscada-development-environment/id604708439)

Create custom industrial monitoring and control interfaces on iOS devices. Design dynamic dashboards with various elements and connect them to PLC systems. Develop and test projects for free, with activation fees for deployment.

**Highlights:** Customizable page layouts, Real-time monitoring and control, Support for major PLC brands, On-screen project editing, Export/import project and asset files, Cloud storage and deployment options, Native PLC communication protocols

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Activation for One Use | $149.99 | one-time |
| Activation for Five Uses | $449.99 | one-time |
| Activation for Ten Uses | $799.99 | one-time |


### Calctronics

[App page](https://appshunter.io/ios/app/calctronics-circuit-calc/id1583972990)

This app provides a comprehensive suite of calculators and design tools for electronic engineering. It assists with circuit design, filter analysis, and component calculations for resistors, capacitors, and inductors. Ideal for both professionals and students, it simplifies complex electronic projects.

**Highlights:** Comprehensive calculator collection, Filter design with graph plotting, Resistor, transistor, capacitor design tools, Amplifier and inductor design, Circuit analysis and design, Offline functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to the Pro version | $2.99 | one-time |


## Frequently asked questions

### Is HMI Draw, native HMI/SCADA development environment free?

HMI Draw, native HMI/SCADA development environment is free to download, with in-app purchases available.

### Is Calctronics free?

Calctronics is free to download, with in-app purchases available.

### Which has better reviews, HMI Draw, native HMI/SCADA development environment or Calctronics?

Calctronics is rated higher. HMI Draw, native HMI/SCADA development environment averages 3.0 out of 5 from 7 ratings, while Calctronics averages 4.0 from 5 ratings.

### Do HMI Draw, native HMI/SCADA development environment or Calctronics have ads?

Calctronics shows ads; HMI Draw, native HMI/SCADA development environment does not.

### Which is updated more often, HMI Draw, native HMI/SCADA development environment or Calctronics?

HMI Draw, native HMI/SCADA development environment ships an update every 6 weeks, and Calctronics every 2 months. Most recently, HMI Draw, native HMI/SCADA development environment was updated on June 11, 2026 and Calctronics on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*