# ElectroCalc Pro vs HCC2D Decoder

The clearest difference is in-app purchases: HCC2D Decoder at none against ElectroCalc Pro's 1. HCC2D Decoder also leads on ads (none vs shown) and update cadence (fortnightly vs every 2 months). ElectroCalc Pro's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price there is nothing between them.

Both are free to download. ElectroCalc Pro sells 1 one-off in-app purchase. HCC2D Decoder asks for nothing beyond the download.

ElectroCalc Pro ships an update every 2 months, HCC2D Decoder fortnightly. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | ElectroCalc Pro | HCC2D Decoder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 28 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DONGSOO LEE](https://appshunter.io/developer/1868670088) | [Marco Querini](https://appshunter.io/developer/1893348109) |

## What reviewers say

### ElectroCalc Pro

[App page](https://appshunter.io/ios/app/electrocalc-pro/id6758211193)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### HCC2D Decoder

[App page](https://appshunter.io/ios/app/hcc2d-decoder/id6762202762)

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

**In-app purchases:** none


## Frequently asked questions

### Is ElectroCalc Pro free?

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

### Is HCC2D Decoder free?

HCC2D Decoder is free to download, with no in-app purchases.

### Do ElectroCalc Pro or HCC2D Decoder have ads?

ElectroCalc Pro shows ads; HCC2D Decoder does not.

### Which is updated more often, ElectroCalc Pro or HCC2D Decoder?

ElectroCalc Pro ships an update every 2 months, and HCC2D Decoder fortnightly. Most recently, ElectroCalc Pro was updated on September 23, 2026 and HCC2D Decoder on September 17, 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.*