# DevGlass vs LightCalc.io

The clearest difference is price: LightCalc.io at Free against DevGlass's $7.99. DevGlass's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

LightCalc.io is free to download; DevGlass costs $7.99 up front. LightCalc.io sells 1 in-app purchase, starting at $34.99 per year. DevGlass asks for nothing beyond the download.

DevGlass ships an update monthly, LightCalc.io fortnightly. Both last shipped on October 28, 2026.

## The numbers

| Metric | DevGlass | LightCalc.io |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Size | 9 MB | 57 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [存滨 崔](https://appshunter.io/developer/1809703940) | [Matthias Streicher-Feldhofer](https://appshunter.io/developer/1896729345) |

## What reviewers say

### DevGlass

[App page](https://appshunter.io/ios/app/devglass/id6762206948)

**Features:** macOS Compatibility

**In-app purchases:** none


### LightCalc.io

[App page](https://appshunter.io/ios/app/lightcalcio/id6770274311)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LightCalc Plus | $34.99 | per year |


## Frequently asked questions

### Is DevGlass free?

DevGlass costs $7.99, with no in-app purchases.

### Is LightCalc.io free?

LightCalc.io is free to download, with in-app purchases available.

### Do DevGlass or LightCalc.io have ads?

LightCalc.io shows ads; DevGlass does not.

### Which is updated more often, DevGlass or LightCalc.io?

DevGlass ships an update monthly, and LightCalc.io fortnightly. Most recently, DevGlass was updated on October 28, 2026 and LightCalc.io on October 28, 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.*