# SKF Values vs Tank Partial Volume Calculator

The clearest difference is price: SKF Values at Free against Tank Partial Volume Calculator's $2.99. SKF Values also leads on update cadence (every 3 months vs every 56 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

SKF Values is free to download; Tank Partial Volume Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SKF Values ships an update every 3 months, Tank Partial Volume Calculator every 56 months. The most recent releases landed on September 17, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | SKF Values | Tank Partial Volume Calculator |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 56 months |
| Monetization | — | Paid |
| Size | 57 MB | 1 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SKF](https://appshunter.io/developer/472922971) | [Imran Pinjara](https://appshunter.io/developer/1484488781) |

## What reviewers say

### SKF Values

[App page](https://appshunter.io/ios/app/skf-values/id1149907235)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tank Partial Volume Calculator

[App page](https://appshunter.io/ios/app/tank-partial-volume-calculator/id1491608421)

Calculate the partial and full volume of horizontal and vertical tanks with various head types. This tool is designed for engineers to determine liquid volumes at any height, simplifying capacity calculations for storage tanks and pressure vessels.

**Highlights:** Horizontal and vertical tank volume calculation, Supports flat, torispherical, hemispherical, and ellipsoidal heads, Calculates full volume, Determines liquid volume at any height, Outputs in cubic meters, liters, and gallons, Input in millimeters or metric system

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

**In-app purchases:** none


## Frequently asked questions

### Is SKF Values free?

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

### Is Tank Partial Volume Calculator free?

Tank Partial Volume Calculator costs $2.99, with no in-app purchases.

### Do SKF Values or Tank Partial Volume Calculator have ads?

Neither SKF Values nor Tank Partial Volume Calculator shows ads.

### Which is updated more often, SKF Values or Tank Partial Volume Calculator?

SKF Values ships an update every 3 months, and Tank Partial Volume Calculator every 56 months. Most recently, SKF Values was updated on September 17, 2026 and Tank Partial Volume Calculator on August 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*