# HVAC Formulator vs Construction+

The clearest difference is review sentiment: Construction+ at 100% against HVAC Formulator's 9%. Construction+ also leads on rating (5.0 vs 2.0) and in-app purchases (none vs 1). HVAC Formulator's advantage is chart position (#197 vs unranked). On update cadence, ads, monetization model and device support there is nothing between them.

HVAC Formulator costs $4.99 and Construction+ $0.99 up front. HVAC Formulator sells 1 one-off in-app purchase. Construction+ asks for nothing beyond the download.

Construction+ holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 9% of HVAC Formulator's written reviews are positive against 100% of Construction+'s.

HVAC Formulator ships an update every 2 months, Construction+ every 3 months. The most recent releases landed on September 5, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | HVAC Formulator | Construction+ |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/hvac-formulator/id318898907/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/construction-plus/id413455174/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | 9.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | Paid |
| Best chart rank | **#197** | — |
| Size | 73 MB | 5 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Verosocial Studio](https://appshunter.io/developer/354566841) |

## What reviewers say

### HVAC Formulator

[App page](https://appshunter.io/ios/app/hvac-formulator/id318898907)

**Currently charting:** #197 Top Paid · Productivity (US App Store)

This app provides HVAC professionals with over 900 essential formulas and calculations for load calculations and system design. It supports both US and Metric units, offers instant switching, and includes 23 calculator categories and over 460 unit conversions. Designed for field use, it works offline and allows users to save and share results.

**Highlights:** Over 900 formulas and calculations, US & Metric unit support, 23 calculator categories, 460+ unit conversions, 8 temperature scales, Offline functionality, Save and share results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Pro | $3.99 | one-time |


### Construction+

[App page](https://appshunter.io/ios/app/construction-plus/id413455174)

This app provides contractors and sales professionals with essential calculators for estimating costs, material quantities, and prices for various construction projects like asphalt, concrete, drywall, and roofing. It also includes specialized calculators for fuel injectors and tire conversions.

**Highlights:** Asphalt, concrete, drywall, roofing calculators, Fuel injector calculators, Tire diameter converter, Email calculation sharing, Offline functionality, Automatic input saving

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Formulator free?

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

### Is Construction+ free?

Construction+ costs $0.99, with no in-app purchases.

### Which has better reviews, HVAC Formulator or Construction+?

Construction+ is rated higher. HVAC Formulator averages 2.0 out of 5 from 1 ratings, while Construction+ averages 5.0 from 4 ratings.

### Do HVAC Formulator or Construction+ have ads?

Neither HVAC Formulator nor Construction+ shows ads.

### Which is updated more often, HVAC Formulator or Construction+?

HVAC Formulator ships an update every 2 months, and Construction+ every 3 months. Most recently, HVAC Formulator was updated on September 5, 2026 and Construction+ on September 10, 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.*