# Orifice Flow vs Heat Exchanger Area

The clearest difference is update cadence: Orifice Flow at every 12 months against Heat Exchanger Area's every 28 months. Orifice Flow also leads on iOS requirement (14.3 vs 16.1). Heat Exchanger Area's advantage is price ($1.99 vs $3.99). On ads, in-app purchases and device support there is nothing between them.

Orifice Flow costs $3.99 and Heat Exchanger Area $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Orifice Flow ships an update every 12 months, Heat Exchanger Area every 28 months. The most recent releases landed on November 1, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Orifice Flow | Heat Exchanger Area |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/orifice-flow/id479581349/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 28 months |
| Monetization | Paid | — |
| Size | 1 MB | 1 MB |
| Requires iOS | **14.3** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [Imran Pinjara](https://appshunter.io/developer/1484488781) |

## What reviewers say

### Orifice Flow

[App page](https://appshunter.io/ios/app/orifice-flow/id479581349)

Calculate fluid flow rates in pipes and conduits using orifice plates. Supports common industrial fluids and custom fluid properties, with adjustable units and orifice types. Ideal for engineers and designers.

**Highlights:** Fluid flow rate computation, Supports 15 common industrial fluids, Custom fluid property input and saving, Multiple orifice plate types, Adjustable units (SI/USCS), Detailed computation model documentation

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

**In-app purchases:** none


### Heat Exchanger Area

[App page](https://appshunter.io/ios/app/heat-exchanger-area/id1490690839)

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

**In-app purchases:** none


## Frequently asked questions

### Is Orifice Flow free?

Orifice Flow costs $3.99, with no in-app purchases.

### Is Heat Exchanger Area free?

Heat Exchanger Area costs $1.99, with no in-app purchases.

### Do Orifice Flow or Heat Exchanger Area have ads?

Neither Orifice Flow nor Heat Exchanger Area shows ads.

### Which is updated more often, Orifice Flow or Heat Exchanger Area?

Orifice Flow ships an update every 12 months, and Heat Exchanger Area every 28 months. Most recently, Orifice Flow was updated on November 1, 2026 and Heat Exchanger Area on October 1, 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.*