# Pool Plus vs Tank Volume Calculator App

The clearest difference is review sentiment: Pool Plus at 100% against Tank Volume Calculator App's 0%. Pool Plus also leads on rating (5.0 vs 1.0) and in-app purchases (none vs 2). Tank Volume Calculator App's advantage is price (Free vs $0.99) and update cadence (every 3 weeks vs every 6 weeks). On ratings volume, device support and iOS requirement there is nothing between them.

Tank Volume Calculator App is free to download; Pool Plus costs $0.99 up front. Tank Volume Calculator App sells 2 in-app purchases, starting at $1.99 per month. Pool Plus asks for nothing beyond the download.

Pool Plus holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 100% of Pool Plus's written reviews are positive against 0% of Tank Volume Calculator App's.

Pool Plus ships an update every 6 weeks, Tank Volume Calculator App every 3 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Pool Plus | Tank Volume Calculator App |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pool-plus/id1488707868/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/tank-volume-calculator-app/id6475638941/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 36 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Corey Sessions](https://appshunter.io/developer/1351154100) | [Valaji Global](https://appshunter.io/developer/1694947440) |

## What reviewers say

### Pool Plus

[App page](https://appshunter.io/ios/app/pool-plus/id1488707868)

Easily calculate the water volume of your swimming pool in gallons. This tool provides a quick and straightforward method for estimating pool capacity.

**Highlights:** Estimate pool water volume, Calculate in gallons, Quick and easy to use, Designed for swimming pools

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

**In-app purchases:** none


### Tank Volume Calculator App

[App page](https://appshunter.io/ios/app/tank-volume-calculator-app/id6475638941)

This app precisely calculates the volume of numerous tank shapes, including cylindrical, rectangular, and conical. It supports custom densities and offers output in various units like liters, cubic meters, and gallons. Designed for professionals and enthusiasts, it simplifies complex calculations with a user-friendly interface.

**Highlights:** Diverse tank types (vertical, horizontal, elliptical, etc.), Customizable density input, Multiple output units (liters, m³, gallons, kg), Flexible input unit options (mm, m, ft, in), User-friendly interface, Precision calculation algorithms

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads - Monthly | $1.99 | per month |
| Remove Ads - Yearly | $19.99 | per year |


## Frequently asked questions

### Is Pool Plus free?

Pool Plus costs $0.99, with no in-app purchases.

### Is Tank Volume Calculator App free?

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

### Which has better reviews, Pool Plus or Tank Volume Calculator App?

Pool Plus is rated higher. Pool Plus averages 5.0 out of 5 from 2 ratings, while Tank Volume Calculator App averages 1.0 from 1 ratings.

### Do Pool Plus or Tank Volume Calculator App have ads?

Tank Volume Calculator App shows ads; Pool Plus does not.

### Which is updated more often, Pool Plus or Tank Volume Calculator App?

Pool Plus ships an update every 6 weeks, and Tank Volume Calculator App every 3 weeks. Most recently, Pool Plus was updated on November 3, 2026 and Tank Volume Calculator App on November 4, 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.*