# Window Glass Design vs WindGrab

The clearest difference is in-app purchases: WindGrab at none against Window Glass Design's 1. WindGrab also leads on update cadence (every 2 days vs every 5 months) and iOS requirement (12.4 vs 15.5). On price, ads and device support there is nothing between them.

Both are free to download. Window Glass Design sells 1 in-app purchase, starting at $149.99 per year. WindGrab asks for nothing beyond the download.

Window Glass Design ships an update every 5 months, WindGrab every 2 days. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Window Glass Design | WindGrab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/window-glass-design/id1312067026/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | Subscription | — |
| Size | 5 MB | 76 MB |
| Requires iOS | 15.5 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Standards Design Group, Inc.](https://appshunter.io/developer/949960891) | [Vigtech](https://appshunter.io/developer/1451027901) |

## What reviewers say

### Window Glass Design

[App page](https://appshunter.io/ios/app/window-glass-design/id1312067026)

This app assists in designing window glass by performing calculations based on ASTM E 1300 standards. It allows customization of support, glazing angles, lites, heat treatment, thickness, lamination, and loads. Results include load resistances and deflection, with options to export as PDF.

**Highlights:** ASTM E 1300 calculations, Customizable support and glazing angles, Multi-lite design with customizable properties, SI or US unit load entry, Load resistance and deflection results, PDF export of results

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mobile Subscription | $149.99 | per year |


### WindGrab

[App page](https://appshunter.io/ios/app/windgrab/id6443871297)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Window Glass Design free?

Window Glass Design is free to download, with in-app purchases available.

### Is WindGrab free?

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

### Do Window Glass Design or WindGrab have ads?

Neither Window Glass Design nor WindGrab shows ads.

### Which is updated more often, Window Glass Design or WindGrab?

Window Glass Design ships an update every 5 months, and WindGrab every 2 days. Most recently, Window Glass Design was updated on October 20, 2026 and WindGrab on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*