# Contact Pro IoT vs PleiSolar

The clearest difference is update cadence: PleiSolar at every 8 months against Contact Pro IoT's every 18 months. On price, ads, 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.

Contact Pro IoT ships an update every 18 months, PleiSolar every 8 months. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Contact Pro IoT | PleiSolar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 8 months** |
| Size | 33 MB | 46 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sysman srl](https://appshunter.io/developer/946937588) | [Brahma Spa](https://appshunter.io/developer/1211596852) |

## What reviewers say

### Contact Pro IoT

[App page](https://appshunter.io/ios/app/contact-pro-iot/id1488893920)

**Features:** macOS Compatibility

**In-app purchases:** none


### PleiSolar

[App page](https://appshunter.io/ios/app/pleisolar/id6444880416)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Contact Pro IoT free?

Contact Pro IoT is free to download, with no in-app purchases.

### Is PleiSolar free?

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

### Do Contact Pro IoT or PleiSolar have ads?

Neither Contact Pro IoT nor PleiSolar shows ads.

### Which is updated more often, Contact Pro IoT or PleiSolar?

Contact Pro IoT ships an update every 18 months, and PleiSolar every 8 months. Most recently, Contact Pro IoT was updated on October 25, 2026 and PleiSolar on October 27, 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.*