# Orifice Flow vs Tank_Level

The clearest difference is price: Tank_Level at Free against Orifice Flow's $3.99. Tank_Level also leads on iOS requirement (12.0 vs 14.3). On update cadence, ads, in-app purchases and device support there is nothing between them.

Tank_Level is free to download; Orifice Flow costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Orifice Flow ships an update every 12 months, Tank_Level every 10 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Orifice Flow | Tank_Level |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 10 months** |
| Monetization | Paid | — |
| Size | 1 MB | 34 MB |
| Requires iOS | 14.3 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [GAMAL ABDELNASER GABR GABR](https://appshunter.io/developer/1646549757) |

## 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_Level

[App page](https://appshunter.io/ios/app/tank-level/id6751470980)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Orifice Flow free?

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

### Is Tank_Level free?

Tank_Level is free to download, with no in-app purchases.

### Do Orifice Flow or Tank_Level have ads?

Neither Orifice Flow nor Tank_Level shows ads.

### Which is updated more often, Orifice Flow or Tank_Level?

Orifice Flow ships an update every 12 months, and Tank_Level every 10 months. Most recently, Orifice Flow was updated on October 30, 2026 and Tank_Level on October 28, 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.*