# InterCalc vs In Folio

The clearest difference is price: InterCalc at Free against In Folio's $1.49. InterCalc also leads on rating (5.0 vs 1.0). In Folio's advantage is update cadence (every 2 weeks vs every 11 months) and iOS requirement (13.0 vs 18.6). On ratings volume, ads, in-app purchases and device support there is nothing between them.

InterCalc is free to download; In Folio costs $1.49 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 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

InterCalc ships an update every 11 months, In Folio every 2 weeks. The most recent releases landed on June 25, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | InterCalc | In Folio |
| --- | --- | --- |
| Price | **Free** | $1.49 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/intercalc/id498391316/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/in-folio/id1483396178/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Size | 1 MB | 15 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) | [Alphanums](https://appshunter.io/developer/1461715998) |

## 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


### In Folio

[App page](https://appshunter.io/ios/app/in-folio/id1483396178)

This app helps you create professional-looking booklets from PDF files. It automates the process of arranging, folding, and stapling pages for a polished publication. Supports various folding formats like folio, quarto, and octavo.

**Highlights:** Create booklets from PDFs, Supports folio, quarto, six, octavo folds, Automated photocomposition, Adjustable paper and print formats, Preserves original document resolution, Available in 6 languages

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InterCalc free?

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

### Is In Folio free?

In Folio costs $1.49, with no in-app purchases.

### Which has better reviews, InterCalc or In Folio?

InterCalc is rated higher. InterCalc averages 5.0 out of 5 from 1 ratings, while In Folio averages 1.0 from 2 ratings.

### Do InterCalc or In Folio have ads?

Neither InterCalc nor In Folio shows ads.

### Which is updated more often, InterCalc or In Folio?

InterCalc ships an update every 11 months, and In Folio every 2 weeks. Most recently, InterCalc was updated on June 25, 2026 and In Folio on September 15, 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.*