# Psychrometric Chart vs Easy Build for iPhone

The clearest difference is review sentiment: Easy Build for iPhone at 100% against Psychrometric Chart's 33%. Easy Build for iPhone also leads on price ($12.99 vs $59.99) and rating (5.0 vs 4.4). Psychrometric Chart's advantage is in-app purchases (none vs 2) and update cadence (every 3 months vs every 20 months). On ads and monetization model there is nothing between them.

Psychrometric Chart costs $59.99 and Easy Build for iPhone $12.99 up front. Easy Build for iPhone sells 2 in-app purchases, starting at $12.99 per month. Psychrometric Chart asks for nothing beyond the download.

Easy Build for iPhone holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Psychrometric Chart has 35 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of Psychrometric Chart's written reviews are positive against 100% of Easy Build for iPhone's.

Psychrometric Chart ships an update every 3 months, Easy Build for iPhone every 20 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Psychrometric Chart | Easy Build for iPhone |
| --- | --- | --- |
| Price | $59.99 | **$12.99** |
| Rating | [4.4 (35 ratings)](https://appshunter.io/ios/app/psychrometric-chart/id1026273214/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/easy-build-for-iphone/id1166472027/reviews)** |
| Number of ratings | **35** | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 20 months |
| Monetization | Paid | Paid |
| Size | 32 MB | 5 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pheinex, LLC](https://appshunter.io/developer/996932317) | [Easy Build Application Pty Ltd](https://appshunter.io/developer/830167511) |

## What reviewers say

### Psychrometric Chart

[App page](https://appshunter.io/ios/app/psychrometric-chart/id1026273214)

An interactive tool for HVAC engineers to create and manipulate psychrometric charts. Model various air processes, add and adjust state points with live property updates, and save multiple charts. Export your designs as PDFs or via AirPrint.

**Highlights:** Interactive psychrometric charts, Model air mixing and heating/cooling, Live state point adjustment, SI and IP unit support, Save and manage multiple charts, Export charts as PDF, AirPrint compatibility

**Features:** Vision Pro support

**In-app purchases:** none


### Easy Build for iPhone

[App page](https://appshunter.io/ios/app/easy-build-for-iphone/id1166472027)

This app helps construction professionals and DIYers accurately measure and calculate dimensions on plans. It allows users to upload drawings, mark up measurements, and export annotated plans for collaboration. Save time and money with efficient take-offs for quotes.

**Highlights:** Upload and measure PDF drawings, Calculate missing measurements, Measure perimeters and areas, Mark up plans with text and drawings, Export annotated plans, Supports metric and imperial units

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EasyBuild Monthly | $12.99 | per month |
| EasyBuild Annual | $39.99 | per year |


## Frequently asked questions

### Is Psychrometric Chart free?

Psychrometric Chart costs $59.99, with no in-app purchases.

### Is Easy Build for iPhone free?

Easy Build for iPhone costs $12.99, and also offers in-app purchases.

### Which has better reviews, Psychrometric Chart or Easy Build for iPhone?

Easy Build for iPhone is rated higher. Psychrometric Chart averages 4.4 out of 5 from 35 ratings, while Easy Build for iPhone averages 5.0 from 1 ratings.

### Do Psychrometric Chart or Easy Build for iPhone have ads?

Neither Psychrometric Chart nor Easy Build for iPhone shows ads.

### Which is updated more often, Psychrometric Chart or Easy Build for iPhone?

Psychrometric Chart ships an update every 3 months, and Easy Build for iPhone every 20 months. Most recently, Psychrometric Chart was updated on November 1, 2026 and Easy Build for iPhone on November 6, 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.*