# HVAC Pipe Sizer vs Eden Select (S)

The clearest difference is price: Eden Select (S) at Free against HVAC Pipe Sizer's $4.99. Eden Select (S) also leads on in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 8 months). On review sentiment, ads and device support there is nothing between them.

Eden Select (S) is free to download; HVAC Pipe Sizer costs $4.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase. Eden Select (S) asks for nothing beyond the download.

HVAC Pipe Sizer ships an update every 8 months, Eden Select (S) every 6 weeks. The most recent releases landed on September 26, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | Eden Select (S) |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eden-select-s/id627365007/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 71.4% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 45 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Far East Group Ltd](https://appshunter.io/developer/627365050) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-liquid/id325069065)

Calculate pipe sizes for liquid systems, including hot and chilled water. Input flow rate, head loss, diameter, or velocity to determine other properties. Supports various liquids, pipe materials, and fittings, with English or metric units.

**Highlights:** Liquid pipe sizing, Hydronic system calculations, Input flow, head loss, diameter, or velocity, Calculate fluid flow and head loss, Supports various liquids and pipe materials, English and metric unit options, Email results

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

**In-app purchases (1)**

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


### Eden Select (S)

[App page](https://appshunter.io/ios/app/eden-select-s/id627365007)

This professional HVAC engineering tool helps users perform heat load calculations, select cold rooms, and choose appropriate equipment for refrigeration projects. It provides various references and calculations for freezing times and operational loads, generating printable PDF summaries.

**Highlights:** Heat load calculation (cold room, product, infiltration), Food heat load references, Freezing time calculation, Total operation load calculation, Unit cooler/Evaporator selection, Compressor selection, Condenser selection, Printable PDF summary

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer free?

HVAC Pipe Sizer costs $4.99, and also offers in-app purchases.

### Is Eden Select (S) free?

Eden Select (S) is free to download, with no in-app purchases.

### Do HVAC Pipe Sizer or Eden Select (S) have ads?

Neither HVAC Pipe Sizer nor Eden Select (S) shows ads.

### Which is updated more often, HVAC Pipe Sizer or Eden Select (S)?

HVAC Pipe Sizer ships an update every 8 months, and Eden Select (S) every 6 weeks. Most recently, HVAC Pipe Sizer was updated on September 26, 2026 and Eden Select (S) on June 11, 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.*