# Engineering Calculator HVAC vs PDF Splitter PageLift

The clearest difference is update cadence: PDF Splitter PageLift at every 2 months against Engineering Calculator HVAC's every 6 months. Engineering Calculator HVAC's advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Engineering Calculator HVAC ships an update every 6 months, PDF Splitter PageLift every 2 months. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Engineering Calculator HVAC | PDF Splitter PageLift |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 19 MB | 7 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [aleksandr bronnikov](https://appshunter.io/developer/1885003900) | [Jordan Holland](https://appshunter.io/developer/1041851744) |

## What reviewers say

### Engineering Calculator HVAC

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

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

**In-app purchases:** none


### PDF Splitter PageLift

[App page](https://appshunter.io/ios/app/pdf-splitter-pagelift/id6789034012)

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

**In-app purchases:** none


## Frequently asked questions

### Is Engineering Calculator HVAC free?

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

### Is PDF Splitter PageLift free?

PDF Splitter PageLift is free to download, with no in-app purchases.

### Do Engineering Calculator HVAC or PDF Splitter PageLift have ads?

Neither Engineering Calculator HVAC nor PDF Splitter PageLift shows ads.

### Which is updated more often, Engineering Calculator HVAC or PDF Splitter PageLift?

Engineering Calculator HVAC ships an update every 6 months, and PDF Splitter PageLift every 2 months. Most recently, Engineering Calculator HVAC was updated on November 9, 2026 and PDF Splitter PageLift on November 10, 2026.

---

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