# RID Scanner vs Foundation Squaring Calculator

The clearest difference is price: RID Scanner at Free against Foundation Squaring Calculator's $4.99. Foundation Squaring Calculator's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.2). On update cadence, ads and in-app purchases there is nothing between them.

RID Scanner is free to download; Foundation Squaring Calculator costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RID Scanner ships an update every 9 days, Foundation Squaring Calculator weekly. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | RID Scanner | Foundation Squaring Calculator |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/rid-scanner/id6742121259/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Size | 2 MB | 37 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Changsha Raspberry Information Technology Limited Co., Ltd.](https://appshunter.io/developer/1476491377) | [Alexander Riggs](https://appshunter.io/developer/6791232535) |

## What reviewers say

### RID Scanner

[App page](https://appshunter.io/ios/app/rid-scanner/id6742121259)

**Features:** macOS Compatibility

**In-app purchases:** none


### Foundation Squaring Calculator

[App page](https://appshunter.io/ios/app/foundation-squaring-calculator/id6795545710)

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

**In-app purchases:** none


## Frequently asked questions

### Is RID Scanner free?

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

### Is Foundation Squaring Calculator free?

Foundation Squaring Calculator costs $4.99, with no in-app purchases.

### Do RID Scanner or Foundation Squaring Calculator have ads?

Neither RID Scanner nor Foundation Squaring Calculator shows ads.

### Which is updated more often, RID Scanner or Foundation Squaring Calculator?

RID Scanner ships an update every 9 days, and Foundation Squaring Calculator weekly. Most recently, RID Scanner was updated on October 24, 2026 and Foundation Squaring Calculator on October 9, 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.*