Psychrometric Chart vs Psychro Chart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Psychrometric Chart
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.
- 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
Read full descriptionHide full description
Interactive, graphical psychrometric chart app for HVAC engineers and designers. Allows you to create and manipulate charts and state points with the touch of your finger(s). Processes that can be modeled include: • An individual state point. • Air mixing. • Sensible heating. • Sensible cooling. • Cooling coils. • Other processes by connecting state points. Add new state points by double tapping anywhere on the chart. Hold and drag existing state points to move them on the graph, with properties values updating live to aid you in setting them to the right value. Works in both SI and IP units. Allows you to create and save multiple charts. Properties and energy change for connected points are calculated and displayed live. Share your charts by exporting a PDF file or sending to an AirPrint device. Works on both the iPhone and iPad, but best used on the larger screen of the iPad. ------ We would very much like your feedback! Suggestions, complements, complaints, bug reports etc.: http://www.pheinex.com/contact/ If you like this app, please do not forget to rate it in the App Store! ----- Notes: This application (App) is provided for use by qualified HVAC engineers and designers in the design of air handling systems and is not a substitute for appropriate design services. When in doubt, contact a design
Psychro Chart
This app simplifies complex air humidity calculations for humidification and heating needs. It allows for quick and accurate assessment of various scenarios using psychrometric or Mollier diagrams.
- Calculate air conditions
- Determine humidification/heating needs
- Perform psychrometric calculations
- Use Mollier diagrams
- Assess scenarios quickly
Read full descriptionHide full description
The Psychro-Chart from Condair is a free app for calculating air conditions and the corresponding humidification or heating required. The generally complex air humidity calculations can be performed extremely accurately and simply, which means that a range of scenarios can be assessed quickly and straightforwardly.The Calculation can be done in a psychrometric Diagram or a Mollier-Diagram.
Screenshots
Verdict
The clearest difference is price: Psychro Chart at Free against Psychrometric Chart's $59.99. Psychro Chart also leads on rating (4.8 vs 4.4) and iOS requirement (7.0 vs 15.0). Psychrometric Chart's advantage is review sentiment (33% vs 0%) and update cadence (every 3 months vs every 9 months). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Psychro Chart is free to download; Psychrometric Chart costs $59.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Psychro Chart holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Psychrometric Chart has 35 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 33% of Psychrometric Chart's written reviews are positive against 0% of Psychro Chart's, so the app with the better star average is not the one people write more warmly about.
Psychrometric Chart ships an update every 3 months, Psychro Chart every 9 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Psychrometric Chart | Psychro Chart |
|---|---|---|
| Price | $59.99 | Free — better |
| Rating | 4.4 (35 ratings) | 4.8 (6 ratings) — better |
| Positive reviews | 33.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 35 — better | 6 |
| Update frequency | Every 3 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 7.0 — better |
| Further details — not scored | ||
| Size | 32 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Pheinex, LLC | Condair GmbH |
Customer experience
Psychrometric Chart
Psychro Chart
In-app purchases
Psychrometric Chart
No in-app purchases
Psychro Chart
No in-app purchases
Questions
Is Psychrometric Chart free?
Is Psychro Chart free?
Which has better reviews, Psychrometric Chart or Psychro Chart?
Do Psychrometric Chart or Psychro Chart have ads?
Which is updated more often, Psychrometric Chart or Psychro Chart?
Other comparisons
