# InterCalc vs Coordinate Master

The clearest difference is price: InterCalc at Free against Coordinate Master's $3.99. InterCalc also leads on rating (5.0 vs 4.4). Coordinate Master's advantage is update cadence (fortnightly vs every 11 months) and ratings volume (5 vs 1). On ads, in-app purchases and device support there is nothing between them.

InterCalc is free to download; Coordinate Master costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

InterCalc holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Coordinate Master has 5 ratings behind it against 1, so its average is the more settled of the two.

InterCalc ships an update every 11 months, Coordinate Master fortnightly. The most recent releases landed on June 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | InterCalc | Coordinate Master |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/intercalc/id498391316/reviews)** | [4.4 (5 ratings)](https://appshunter.io/ios/app/coordinate-master/id1189917015/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Fortnightly** |
| Monetization | **Free** | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | 18.6 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [River Rock Logic](https://appshunter.io/developer/340225113) | [Anthony Dunk](https://appshunter.io/developer/704471943) |

## 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


### Coordinate Master

[App page](https://appshunter.io/ios/app/coordinate-master/id1189917015)

Convert coordinates between over 1700 global systems using PROJ4 library. Supports various formats including lat/lon, UTM, and national grids. Can use GPS or photo data for input.

**Highlights:** 1700+ coordinate systems, PROJ4 library integration, Supports lat/lon, UTM, national grids, Custom coordinate system support, GPS location input, Photo coordinate extraction

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

**In-app purchases:** none


## Frequently asked questions

### Is InterCalc free?

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

### Is Coordinate Master free?

Coordinate Master costs $3.99, with no in-app purchases.

### Which has better reviews, InterCalc or Coordinate Master?

InterCalc is rated higher. InterCalc averages 5.0 out of 5 from 1 ratings, while Coordinate Master averages 4.4 from 5 ratings.

### Do InterCalc or Coordinate Master have ads?

Neither InterCalc nor Coordinate Master shows ads.

### Which is updated more often, InterCalc or Coordinate Master?

InterCalc ships an update every 11 months, and Coordinate Master fortnightly. Most recently, InterCalc was updated on June 25, 2026 and Coordinate Master on September 18, 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.*