# Pilkington Spectrum vs InstallationPro

The clearest difference is ads: InstallationPro at none against Pilkington Spectrum's shown. InstallationPro also leads on update cadence (monthly vs every 3 months). Pilkington Spectrum's advantage is iOS requirement (9.3 vs 13.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pilkington Spectrum ships an update every 3 months, InstallationPro monthly. The most recent releases landed on June 2, 2026 and July 30, 2026 respectively.

## The numbers

| Metric | Pilkington Spectrum | InstallationPro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 87 MB | 128 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pilkington Group Ltd](https://appshunter.io/developer/1184941969) | [Digital Building Solutions GmbH](https://appshunter.io/developer/1456095004) |

## What reviewers say

### Pilkington Spectrum

[App page](https://appshunter.io/ios/app/pilkington-spectrum/id1184941970)

This application calculates key properties of insulating glass units, including light, solar, and sound insulation values. It provides detailed information on various glazing configurations and product ranges. Access technical contacts for further assistance.

**Highlights:** Calculate light and solar properties, Determine centre pane U-value, Assess sound insulation values, Analyze UV transmittance and color rendering, Evaluate impact resistance and fire resistance, Access comprehensive product database, Find technical contact information

**Features:** macOS Compatibility

**In-app purchases:** none


### InstallationPro

[App page](https://appshunter.io/ios/app/installationpro/id1456095005)

**In-app purchases:** none


## Frequently asked questions

### Is Pilkington Spectrum free?

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

### Is InstallationPro free?

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

### Do Pilkington Spectrum or InstallationPro have ads?

Pilkington Spectrum shows ads; InstallationPro does not.

### Which is updated more often, Pilkington Spectrum or InstallationPro?

Pilkington Spectrum ships an update every 3 months, and InstallationPro monthly. Most recently, Pilkington Spectrum was updated on June 2, 2026 and InstallationPro on July 30, 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.*