# Ltlaser Level vs Engineering Calculator HVAC

The clearest difference is iOS requirement: Ltlaser Level at 11.0 against Engineering Calculator HVAC's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ltlaser Level ships an update every 3 months, Engineering Calculator HVAC every 6 months. The most recent releases landed on September 11, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Ltlaser Level | Engineering Calculator HVAC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Size | 15 MB | 19 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [再坤 夏](https://appshunter.io/developer/1751214643) | [aleksandr bronnikov](https://appshunter.io/developer/1885003900) |

## What reviewers say

### Ltlaser Level

[App page](https://appshunter.io/ios/app/ltlaser-level/id6744520877)

**In-app purchases:** none


### Engineering Calculator HVAC

[App page](https://appshunter.io/ios/app/engineering-calculator-hvac/id6760564633)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ltlaser Level free?

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

### Is Engineering Calculator HVAC free?

Engineering Calculator HVAC is free to download, with no in-app purchases.

### Do Ltlaser Level or Engineering Calculator HVAC have ads?

Neither Ltlaser Level nor Engineering Calculator HVAC shows ads.

### Which is updated more often, Ltlaser Level or Engineering Calculator HVAC?

Ltlaser Level ships an update every 3 months, and Engineering Calculator HVAC every 6 months. Most recently, Ltlaser Level was updated on September 11, 2026 and Engineering Calculator HVAC on September 21, 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.*