# InterCalc vs Silverson Conversion Tools

The clearest difference is rating: InterCalc at 5.0 against Silverson Conversion Tools's 4.7. Silverson Conversion Tools's advantage is ratings volume (3 vs 1) and iOS requirement (8.0 vs 18.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

InterCalc holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

InterCalc ships an update every 11 months, Silverson Conversion Tools every 6 months. The most recent releases landed on October 1, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | InterCalc | Silverson Conversion Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/intercalc/id498391316/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/silverson-conversion-tools/id626189811/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 1 MB | 9 MB |
| Requires iOS | 18.6 | **8.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [River Rock Logic](https://appshunter.io/developer/340225113) | [Silverson Machines Limited](https://appshunter.io/developer/626189814) |

## What reviewers say

### InterCalc

[App page](https://appshunter.io/ios/app/intercalc/id498391316)

This app performs linear interpolation using a set of X-Y values to define a relationship. It can calculate values based on defined points, useful for tasks like converting pressure readings to fluid volumes in containers or performing simple unit conversions.

**Highlights:** Linear interpolation of X-Y values, Defines arbitrary functions from data points, Calculates fluid volume from pressure readings, Performs unit conversions (e.g., temperature, speed), Supports custom data sets

**Features:** macOS Compatibility

**In-app purchases:** none


### Silverson Conversion Tools

[App page](https://appshunter.io/ios/app/silverson-conversion-tools/id626189811)

This app provides engineers and operations personnel with tools to calculate the volume of vertical tanks of various shapes and top/bottom styles. It also includes multiple conversion tools for common measurements and a browser for product information.

**Highlights:** Vertical tank volume calculation, Multiple tank shapes and top/bottom styles, Unit conversion tools, Email/Share calculation results, Integrated product browser

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InterCalc free?

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

### Is Silverson Conversion Tools free?

Silverson Conversion Tools is free to download, with no in-app purchases.

### Which has better reviews, InterCalc or Silverson Conversion Tools?

InterCalc is rated higher. InterCalc averages 5.0 out of 5 from 1 ratings, while Silverson Conversion Tools averages 4.7 from 3 ratings.

### Do InterCalc or Silverson Conversion Tools have ads?

Neither InterCalc nor Silverson Conversion Tools shows ads.

### Which is updated more often, InterCalc or Silverson Conversion Tools?

InterCalc ships an update every 11 months, and Silverson Conversion Tools every 6 months. Most recently, InterCalc was updated on October 1, 2026 and Silverson Conversion Tools on June 5, 2026.

---

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