# HVAC Pipe Sizer vs JETI Studio Mobile

The clearest difference is price: JETI Studio Mobile at Free against HVAC Pipe Sizer's $6.99. JETI Studio Mobile also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 9 months). On ads and device support there is nothing between them.

JETI Studio Mobile is free to download; HVAC Pipe Sizer costs $6.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase. JETI Studio Mobile asks for nothing beyond the download.

HVAC Pipe Sizer ships an update every 9 months, JETI Studio Mobile every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | JETI Studio Mobile |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 1 MB | 45 MB |
| Requires iOS | 17.0 | **15.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [JETI model s.r.o.](https://appshunter.io/developer/1694213732) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-steam/id336112747)

Quickly size steam pipe systems by inputting piping and steam properties. Includes a steam table calculator and HVAC equipment locator. Supports English and metric units.

**Highlights:** Steam pipe sizing, Steam table calculator, HVAC Equipment Locator, English/metric unit selection, Pipe fitting database, Slider controls for input

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


### JETI Studio Mobile

[App page](https://appshunter.io/ios/app/jeti-studio-mobile/id6450649167)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer free?

HVAC Pipe Sizer costs $6.99, and also offers in-app purchases.

### Is JETI Studio Mobile free?

JETI Studio Mobile is free to download, with no in-app purchases.

### Do HVAC Pipe Sizer or JETI Studio Mobile have ads?

Neither HVAC Pipe Sizer nor JETI Studio Mobile shows ads.

### Which is updated more often, HVAC Pipe Sizer or JETI Studio Mobile?

HVAC Pipe Sizer ships an update every 9 months, and JETI Studio Mobile every 2 months. Most recently, HVAC Pipe Sizer was updated on November 1, 2026 and JETI Studio Mobile on November 3, 2026.

---

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