# Orifice Flow vs Tank Volume Calculator +

The clearest difference is price: Tank Volume Calculator + at Free against Orifice Flow's $3.99. Orifice Flow's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

Tank Volume Calculator + is free to download; Orifice Flow costs $3.99 up front. Tank Volume Calculator + sells 2 in-app purchases, starting at $2.99 per month. Orifice Flow asks for nothing beyond the download.

## The numbers

| Metric | Orifice Flow | Tank Volume Calculator + |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | — |
| Monetization | Paid | — |
| Size | 1 MB | 10 MB |
| Requires iOS | 14.3 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [Vaghani Keyur](https://appshunter.io/developer/1164464860) |

## 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


### Tank Volume Calculator +

[App page](https://appshunter.io/ios/app/tank-volume-calculator-plus/id6773309195)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $9.99 | per year |


## Frequently asked questions

### Is Orifice Flow free?

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

### Is Tank Volume Calculator + free?

Tank Volume Calculator + is free to download, with in-app purchases available.

### Do Orifice Flow or Tank Volume Calculator + have ads?

Neither Orifice Flow nor Tank Volume Calculator + shows ads.

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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.*