# HVAC Pipe Sizer vs HOBOconnect

The clearest difference is review sentiment: HVAC Pipe Sizer at 100% against HOBOconnect's 8%. HVAC Pipe Sizer also leads on rating (5.0 vs 2.2). HOBOconnect's advantage is price (Free vs $4.99) and update cadence (every 6 weeks vs every 8 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

HOBOconnect is free to download; HVAC Pipe Sizer costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC Pipe Sizer holds the better App Store score, 5.0 against 2.2. That said, the two scores are not equally well evidenced: HOBOconnect has 29 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of HVAC Pipe Sizer's written reviews are positive against 8% of HOBOconnect's.

HVAC Pipe Sizer ships an update every 8 months, HOBOconnect every 6 weeks. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | HOBOconnect |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-high/id341828523/reviews)** | [2.2 (29 ratings)](https://appshunter.io/ios/app/hoboconnect/id1517656696/reviews) |
| Number of ratings | 3 | **29** |
| Positive reviews | **100.0% of reviews** | 8.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 17 MB | 94 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Onset Computer Corporation](https://appshunter.io/developer/890594162) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-high/id341828523)

This utility app helps engineers quickly size high-pressure gas piping systems. Input flow, pressure, and pipe properties to calculate diameters, velocity, and equivalent length. Supports English and metric units with built-in tables for various pipe materials.

**Highlights:** High-pressure gas pipe sizing, Input flow, pressure, and pipe parameters, Calculate exact/nominal diameters, Determine velocity and equivalent length, Supports English and metric units, Includes pipe fitting tables, Universal app for iPhone and iPad

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

**In-app purchases:** none


### HOBOconnect

[App page](https://appshunter.io/ios/app/hoboconnect/id1517656696)

Wirelessly configure, start, and download data from HOBO MX data loggers via Bluetooth. View, analyze, and export recorded data in various formats for further use in other applications.

**Highlights:** Wireless Bluetooth communication with HOBO MX loggers, Configure logger settings (name, password, rate, alarms), Monitor logger status (memory, battery), Download and view recorded data, Data analysis in graphical and list formats, Export data as CSV, TXT, XLSX, and HOBO files

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer free?

HVAC Pipe Sizer costs $4.99, with no in-app purchases.

### Is HOBOconnect free?

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

### Which has better reviews, HVAC Pipe Sizer or HOBOconnect?

HVAC Pipe Sizer is rated higher. HVAC Pipe Sizer averages 5.0 out of 5 from 3 ratings, while HOBOconnect averages 2.2 from 29 ratings.

### Do HVAC Pipe Sizer or HOBOconnect have ads?

Neither HVAC Pipe Sizer nor HOBOconnect shows ads.

### Which is updated more often, HVAC Pipe Sizer or HOBOconnect?

HVAC Pipe Sizer ships an update every 8 months, and HOBOconnect every 6 weeks. Most recently, HVAC Pipe Sizer was updated on October 15, 2026 and HOBOconnect on October 12, 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.*