# InterCalc vs Percent Error Calculator

The clearest difference is update cadence: Percent Error Calculator at weekly against InterCalc's every 11 months. Percent Error Calculator also leads on iOS requirement (13.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

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

InterCalc ships an update every 11 months, Percent Error Calculator weekly. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | InterCalc | Percent Error Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/intercalc/id498391316/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | Free | — |
| Size | 1 MB | 40 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [River Rock Logic](https://appshunter.io/developer/340225113) | [Stage Coding](https://appshunter.io/developer/1637068135) |

## 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


### Percent Error Calculator

[App page](https://appshunter.io/ios/app/percent-error-calculator/id1619680411)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InterCalc free?

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

### Is Percent Error Calculator free?

Percent Error Calculator is free to download, with no in-app purchases.

### Do InterCalc or Percent Error Calculator have ads?

Neither InterCalc nor Percent Error Calculator shows ads.

### Which is updated more often, InterCalc or Percent Error Calculator?

InterCalc ships an update every 11 months, and Percent Error Calculator weekly. Most recently, InterCalc was updated on October 17, 2026 and Percent Error Calculator on October 3, 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.*