# Arc Calculations vs Glass Tool

The clearest difference is price: Glass Tool at Free against Arc Calculations's $2.99. Glass Tool also leads on update cadence (weekly vs every 56 months) and iOS requirement (13.0 vs 16.1). On ads, in-app purchases and device support there is nothing between them.

Glass Tool is free to download; Arc Calculations costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Arc Calculations ships an update every 56 months, Glass Tool weekly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Arc Calculations | Glass Tool |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 56 months | **Weekly** |
| Size | 1 MB | 4 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [Cheng Lun Hung](https://appshunter.io/developer/1501635683) |

## What reviewers say

### Arc Calculations

[App page](https://appshunter.io/ios/app/arc-calculations/id1491438925)

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

**In-app purchases:** none


### Glass Tool

[App page](https://appshunter.io/ios/app/glass-tool/id1501635684)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Arc Calculations free?

Arc Calculations costs $2.99, with no in-app purchases.

### Is Glass Tool free?

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

### Do Arc Calculations or Glass Tool have ads?

Neither Arc Calculations nor Glass Tool shows ads.

### Which is updated more often, Arc Calculations or Glass Tool?

Arc Calculations ships an update every 56 months, and Glass Tool weekly. Most recently, Arc Calculations was updated on November 3, 2026 and Glass Tool on November 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.*