# InterCalc vs thoschCalc

The clearest difference is price: InterCalc at Free against thoschCalc's $2.99. InterCalc also leads on in-app purchases (none vs 3). thoschCalc's advantage is update cadence (every 3 weeks vs every 11 months) and device support (4 vs 2). On ads there is nothing between them.

InterCalc is free to download; thoschCalc costs $2.99 up front. thoschCalc sells 3 in-app purchases, starting at $0.99 per year. InterCalc asks for nothing beyond the download.

InterCalc ships an update every 11 months, thoschCalc every 3 weeks. The most recent releases landed on June 25, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | InterCalc | thoschCalc |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/intercalc/id498391316/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 1 MB | 2 MB |
| Requires iOS | 18.6 | **12.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [River Rock Logic](https://appshunter.io/developer/340225113) | [Thorsten Schueler](https://appshunter.io/developer/933565982) |

## 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


### thoschCalc

[App page](https://appshunter.io/ios/app/thoschcalc-calculator/id1441230517)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| constants, functions & units | $0.99 | per year |
| Extended history | $0.99 | one-time |
| Browse history | $0.99 | one-time |


## Frequently asked questions

### Is InterCalc free?

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

### Is thoschCalc free?

thoschCalc costs $2.99, and also offers in-app purchases.

### Do InterCalc or thoschCalc have ads?

Neither InterCalc nor thoschCalc shows ads.

### Which is updated more often, InterCalc or thoschCalc?

InterCalc ships an update every 11 months, and thoschCalc every 3 weeks. Most recently, InterCalc was updated on June 25, 2026 and thoschCalc on September 8, 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.*