# Light + Building Istanbul vs SolarEX

The clearest difference is ads: SolarEX at none against Light + Building Istanbul's shown. SolarEX also leads on update cadence (every 2 weeks vs every 11 months) and iOS requirement (13.0 vs 16.6). 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.

Light + Building Istanbul ships an update every 11 months, SolarEX every 2 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | Light + Building Istanbul | SolarEX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Size | 85 MB | 39 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [MESSE FRANKFURT ISTANBUL ULUSLARARASI FUARCILIK LIMITED SIRKETI](https://appshunter.io/developer/1733464172) | [Voli Fuar Hizmetleri A.Ş.](https://appshunter.io/developer/1773418568) |

## What reviewers say

### Light + Building Istanbul

[App page](https://appshunter.io/ios/app/light-plus-building-istanbul/id6737268034)

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

**In-app purchases:** none


### SolarEX

[App page](https://appshunter.io/ios/app/solarex/id6740814673)

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

**In-app purchases:** none


## Frequently asked questions

### Is Light + Building Istanbul free?

Light + Building Istanbul is free to download, with no in-app purchases.

### Is SolarEX free?

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

### Do Light + Building Istanbul or SolarEX have ads?

Light + Building Istanbul shows ads; SolarEX does not.

### Which is updated more often, Light + Building Istanbul or SolarEX?

Light + Building Istanbul ships an update every 11 months, and SolarEX every 2 weeks. Most recently, Light + Building Istanbul was updated on October 30, 2026 and SolarEX on October 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.*