# Fluid Pressure Drop vs Moody Chart Calculator

The clearest difference is price: Moody Chart Calculator at Free against Fluid Pressure Drop's $4.99. Moody Chart Calculator also leads on ratings volume (6 vs 1). Fluid Pressure Drop's advantage is in-app purchases (none vs 1) and update cadence (every 12 months vs every 57 months). On rating, ads, device support and iOS requirement there is nothing between them.

Moody Chart Calculator is free to download; Fluid Pressure Drop costs $4.99 up front. Moody Chart Calculator sells 1 in-app purchase, starting at $1.99 per month. Fluid Pressure Drop asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Fluid Pressure Drop against 5.0 for Moody Chart Calculator. That said, the two scores are not equally well evidenced: Moody Chart Calculator has 6 ratings behind it against 1, so its average is the more settled of the two.

Fluid Pressure Drop ships an update every 12 months, Moody Chart Calculator every 57 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Fluid Pressure Drop | Moody Chart Calculator |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/fluid-pressure-drop/id467174085/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/moody-chart-calculator/id1202447201/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 57 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 49 MB |
| Requires iOS | **14.3** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [Ali Batayneh](https://appshunter.io/developer/1876400685) |

## What reviewers say

### Fluid Pressure Drop

[App page](https://appshunter.io/ios/app/fluid-pressure-drop/id467174085)

Calculate fluid transmission energy loss for industrial applications. Choose from common fluids, pipe schedules, and materials to determine pressure loss. Supports custom fluids and includes calculations for valves and fittings.

**Highlights:** Pressure loss computation, Custom fluid creation, Valve and fitting loss calculation, Multiple fluid options, Various pipe schedules and materials, Unit of measurement selection

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

**In-app purchases:** none


### Moody Chart Calculator

[App page](https://appshunter.io/ios/app/moody-chart-calculator/id1202447201)

This utility app calculates a friction factor based on Reynolds Number and Relative Roughness. It provides a straightforward tool for engineering calculations.

**Highlights:** Friction factor calculation, Reynolds Number input, Relative Roughness input, Engineering utility

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |


## Frequently asked questions

### Is Fluid Pressure Drop free?

Fluid Pressure Drop costs $4.99, with no in-app purchases.

### Is Moody Chart Calculator free?

Moody Chart Calculator is free to download, with in-app purchases available.

### Which has better reviews, Fluid Pressure Drop or Moody Chart Calculator?

Fluid Pressure Drop and Moody Chart Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 6 ratings respectively.

### Do Fluid Pressure Drop or Moody Chart Calculator have ads?

Neither Fluid Pressure Drop nor Moody Chart Calculator shows ads.

### Which is updated more often, Fluid Pressure Drop or Moody Chart Calculator?

Fluid Pressure Drop ships an update every 12 months, and Moody Chart Calculator every 57 months. Most recently, Fluid Pressure Drop was updated on November 6, 2026 and Moody Chart Calculator on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*