# Tank Volume & Capacity vs unloading meter

The clearest difference is in-app purchases: unloading meter at none against Tank Volume & Capacity's 3. unloading meter also leads on update cadence (every 2 months vs every 50 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Tank Volume & Capacity sells 3 in-app purchases, starting at $4.99 per 7 days. unloading meter asks for nothing beyond the download.

Tank Volume & Capacity ships an update every 50 months, unloading meter every 2 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Tank Volume & Capacity | unloading meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.3 (6 ratings)](https://appshunter.io/ios/app/tank-volume-and-capacity/id1358245539/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 59 MB | 42 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gorasiya Vishal Nanjibhai](https://appshunter.io/developer/1287086933) | [Zhejiang Koeo Petroleum Machinery Co.,Ltd](https://appshunter.io/developer/1527963988) |

## What reviewers say

### Tank Volume & Capacity

[App page](https://appshunter.io/ios/app/tank-volume-and-capacity/id1358245539)

Estimate the total and filled volumes of various tank shapes, including rectangular, cylindrical, and those with conical or spherical bottoms. Calculates liquid volume and weight based on filling level, providing an estimate for oil and water tanks.

**Highlights:** Estimate total and filled tank volumes, Calculates liquid volume and weight, Supports rectangular tanks, Supports horizontal cylindrical tanks, Supports vertical cylindrical tanks, Supports tanks with conical or spherical bottoms

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Yearly | $29.99 | per year |
| Lifetime | $49.99 | one-time |


### unloading meter

[App page](https://appshunter.io/ios/app/unloading-meter/id1575907612)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tank Volume & Capacity free?

Tank Volume & Capacity is free to download, with in-app purchases available.

### Is unloading meter free?

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

### Do Tank Volume & Capacity or unloading meter have ads?

Neither Tank Volume & Capacity nor unloading meter shows ads.

### Which is updated more often, Tank Volume & Capacity or unloading meter?

Tank Volume & Capacity ships an update every 50 months, and unloading meter every 2 months. Most recently, Tank Volume & Capacity was updated on November 2, 2026 and unloading meter on October 27, 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.*