# ESSCO EV vs Duct Sizer Calc HVAC

The clearest difference is price: ESSCO EV at Free against Duct Sizer Calc HVAC's $0.99. ESSCO EV also leads on in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

ESSCO EV is free to download; Duct Sizer Calc HVAC costs $0.99 up front. Duct Sizer Calc HVAC sells 1 one-off in-app purchase. ESSCO EV asks for nothing beyond the download.

## The numbers

| Metric | ESSCO EV | Duct Sizer Calc HVAC |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 11 MB | 34 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [ESSCO CORPORATION COMPANY LIMITED](https://appshunter.io/developer/1697333760) | [Rizvan Adzhoian](https://appshunter.io/developer/1891746079) |

## What reviewers say

### ESSCO EV

[App page](https://appshunter.io/ios/app/essco-ev/id6475751787)

**Features:** macOS Compatibility

**In-app purchases:** none


### Duct Sizer Calc HVAC

[App page](https://appshunter.io/ios/app/duct-sizer-calc-hvac/id6764646921)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |


## Frequently asked questions

### Is ESSCO EV free?

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

### Is Duct Sizer Calc HVAC free?

Duct Sizer Calc HVAC costs $0.99, and also offers in-app purchases.

### Do ESSCO EV or Duct Sizer Calc HVAC have ads?

Neither ESSCO EV nor Duct Sizer Calc HVAC shows ads.

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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.*