# Pipe Flow Liquid Pipe Diameter vs Tank Volume Calculator

The clearest difference is rating: Pipe Flow Liquid Pipe Diameter at 4.6 against Tank Volume Calculator's 3.7. Pipe Flow Liquid Pipe Diameter also leads on update cadence (fortnightly vs every 10 months) and iOS requirement (11.0 vs 15.0). Tank Volume Calculator's advantage is in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Pipe Flow Liquid Pipe Diameter sells 1 one-off in-app purchase. Tank Volume Calculator asks for nothing beyond the download.

Pipe Flow Liquid Pipe Diameter holds the better App Store score, 4.6 against 3.7. Both are backed by a comparable volume of ratings — 5 and 3 respectively.

Pipe Flow Liquid Pipe Diameter ships an update fortnightly, Tank Volume Calculator every 10 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Pipe Flow Liquid Pipe Diameter | Tank Volume Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/pipe-flow-liquid-pipe-diameter/id1582795461/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/tank-volume-calculator/id6727014725/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 10 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 67 MB | 25 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pipe Flow Software](https://appshunter.io/developer/1193064957) | [Bestami Oktay Akpinar](https://appshunter.io/developer/1771205471) |

## What reviewers say

### Pipe Flow Liquid Pipe Diameter

[App page](https://appshunter.io/ios/app/pipe-flow-liquid-pipe-diameter/id1582795461)

This app calculates the minimum internal pipe diameter required for a specific flow rate and maximum pressure loss. It offers comprehensive results, customizable databases for materials and fluids, and generates professional reports.

**Highlights:** Pipe diameter calculation, Friction loss calculation, Customizable material and fluid databases, Imperial and Metric unit support, Professional Excel and PDF reports, Results verification against published data

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipe Flow Pipe Diameter | $4.99 | one-time |


### Tank Volume Calculator

[App page](https://appshunter.io/ios/app/tank-volume-calculator/id6727014725)

Easily calculate the volume and liquid levels for a wide variety of tank shapes. Supports multiple units and offers offline functionality for convenient use in industries or for personal projects.

**Highlights:** Calculate volume for vertical, horizontal, conical, elliptical, rectangular, and aquarium tanks, Supports metric and imperial units (mm, cm, inches, feet, liters, gallons), Built-in volume converter, Save and track calculations, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pipe Flow Liquid Pipe Diameter free?

Pipe Flow Liquid Pipe Diameter is free to download, with in-app purchases available.

### Is Tank Volume Calculator free?

Tank Volume Calculator is free to download, with no in-app purchases.

### Which has better reviews, Pipe Flow Liquid Pipe Diameter or Tank Volume Calculator?

Pipe Flow Liquid Pipe Diameter is rated higher. Pipe Flow Liquid Pipe Diameter averages 4.6 out of 5 from 5 ratings, while Tank Volume Calculator averages 3.7 from 3 ratings.

### Do Pipe Flow Liquid Pipe Diameter or Tank Volume Calculator have ads?

Neither Pipe Flow Liquid Pipe Diameter nor Tank Volume Calculator shows ads.

### Which is updated more often, Pipe Flow Liquid Pipe Diameter or Tank Volume Calculator?

Pipe Flow Liquid Pipe Diameter ships an update fortnightly, and Tank Volume Calculator every 10 months. Most recently, Pipe Flow Liquid Pipe Diameter was updated on October 24, 2026 and Tank Volume Calculator on October 24, 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.*