# HL vs ElectroCalc Pro

The clearest difference is in-app purchases: HL at none against ElectroCalc Pro's 1. HL also leads on iOS requirement (9.0 vs 15.0). ElectroCalc Pro's advantage is device support. On price there is nothing between them.

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

## The numbers

| Metric | HL | ElectroCalc Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Every 3 months |
| Size | 19 MB | 27 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [上海铭控传感技术有限公司](https://appshunter.io/developer/1687248200) | [DONGSOO LEE](https://appshunter.io/developer/1868670088) |

## What reviewers say

### HL

[App page](https://appshunter.io/ios/app/hl-151-cn/id6448973601)

**In-app purchases:** none


### ElectroCalc Pro

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

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (1)**

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


## Frequently asked questions

### Is HL free?

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

### Is ElectroCalc Pro free?

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

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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.*