Touch Fluids vs Psychrometry Chart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Touch Fluids
An educational tool for fluid mechanics courses, featuring basic equations and animations. It covers topics from fluid statics to flow in pipes, suitable for high school and university students. Teachers can use it to present concepts in class.
- Basic fluid mechanics equations
- Illustrative animations
- Fluid statics
- Fluid in motion
- Continuity and energy equations
- Flow in pipes
- Vector operations
Read full descriptionHide full description
Touch Fluids is an educative iPhone application in support to an high-school or university course of fluid mechanics. It contains not only a memorandum of the basic equations, but it also contains several animations illustrating the various concepts of fluid mechanics. This application runs also on iPad and iPod Touch. 50 screens of physics! For teachers !! Connect your iPad with a video projector and show the animations to your students in classroom. List of covered subjects: Fluid Statics - Fluid Properties, - Pressure, - Fluid Forces. Fluid in mouvement - Approaches, - Kinematics, - Type of flow - Transport Equation. Continuity Equation - Continuity Equation, - Incompressible and Stationnary flow, - Differential Form, Energy Equation - Fluid Energie, - General Energy Equation. Linear Momentum - Momentum Equation, - Differential Form. Flow in Pipes - Lost Head, - Minor Lost Head. Appendices - Vector Operations - Vector Identities.
Psychrometry Chart
This app calculates and displays thermodynamic properties of moist air mixtures. It supports both SI and imperial units, allowing users to find values like dry-bulb temperature, relative humidity, and enthalpy by interacting with a chart. It also computes thermal comfort parameters.
- Moist air property calculation
- SI and imperial unit support
- Interactive chart with reticle
- Displays dry-bulb temp, humidity, enthalpy
- Calculates PMV/PPD thermal comfort
Read full descriptionHide full description
The application is a psychrometric chart. It accurately calculates and displays relevant thermodynamic air & water vapour mixture properties. Supports both SI and imperial unit systems By sliding the reticle within the graph the properties values for each corresponding graph point are instantly updated and displayed in the respective fields. In particular the following properties are shown: Dry-bulb temperature, Relative humidity, Wet bulb temperature, Specific enthalpy & Dew point. Additionally ISO-7730 PMV/PPD thermal comfort parameters are calculated.
Screenshots
Verdict
The clearest difference is review sentiment: Touch Fluids at 60% against Psychrometry Chart's 0%. Touch Fluids also leads on price ($0.99 vs $1.99). Psychrometry Chart's advantage is update cadence (every 2 weeks vs every 13 months) and iOS requirement (15.6 vs 17.2). On ads, in-app purchases, monetization model 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
Touch Fluids costs $0.99 and Psychrometry Chart $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Touch Fluids ships an update every 13 months, Psychrometry Chart every 2 weeks. The most recent releases landed on October 13, 2026 and October 20, 2026 respectively.
| Parameter | Touch Fluids | Psychrometry Chart |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 60.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 13 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.2 | 15.6 — better |
| Further details — not scored | ||
| Size | 15 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Xavier Daxhelet | Konstantinos Ladiellis |
Customer experience
Touch Fluids
Psychrometry Chart
In-app purchases
Touch Fluids
No in-app purchases
Psychrometry Chart
No in-app purchases
Questions
Is Touch Fluids free?
Is Psychrometry Chart free?
Do Touch Fluids or Psychrometry Chart have ads?
Which is updated more often, Touch Fluids or Psychrometry Chart?
Other comparisons
