# Tank Volume Calculators vs Pipe Diameter Calculators

The clearest difference is price: Pipe Diameter Calculators at Free against Tank Volume Calculators's $3.99. Tank Volume Calculators's advantage is in-app purchases (none vs 1) and update cadence (every 4 months vs every 20 months). On ads and device support there is nothing between them.

Pipe Diameter Calculators is free to download; Tank Volume Calculators costs $3.99 up front. Pipe Diameter Calculators sells 1 one-off in-app purchase. Tank Volume Calculators asks for nothing beyond the download.

Tank Volume Calculators ships an update every 4 months, Pipe Diameter Calculators every 20 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Tank Volume Calculators | Pipe Diameter Calculators |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[1.8 (5 ratings)](https://appshunter.io/ios/app/tank-volume-calculators/id6477382115/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 20 months |
| Monetization | Paid | — |
| Size | 28 MB | 59 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) | [Ashvin Kevadiya](https://appshunter.io/developer/1756324971) |

## What reviewers say

### Tank Volume Calculators

[App page](https://appshunter.io/ios/app/tank-volume-calculators/id6477382115)

Easily calculate the filled and half-filled volumes of various tank types. This app offers a comprehensive volume converter for numerous units and supports 15 different tank shapes for accurate estimations.

**Highlights:** Calculate filled and half-filled tank volumes, Supports 15 different tank types, Comprehensive volume converter, Converts between multiple units, Intuitive user interface, Rapid capacity calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### Pipe Diameter Calculators

[App page](https://appshunter.io/ios/app/pipe-diameter-calculators/id6743020859)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Tank Volume Calculators free?

Tank Volume Calculators costs $3.99, with no in-app purchases.

### Is Pipe Diameter Calculators free?

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

### Do Tank Volume Calculators or Pipe Diameter Calculators have ads?

Neither Tank Volume Calculators nor Pipe Diameter Calculators shows ads.

### Which is updated more often, Tank Volume Calculators or Pipe Diameter Calculators?

Tank Volume Calculators ships an update every 4 months, and Pipe Diameter Calculators every 20 months. Most recently, Tank Volume Calculators was updated on October 24, 2026 and Pipe Diameter Calculators on October 29, 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.*