# Contact Pro IoT vs Alfa Tech

The clearest difference is update cadence: Alfa Tech at monthly against Contact Pro IoT's every 18 months. Contact Pro IoT's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases 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, Alfa Tech monthly. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Contact Pro IoT | Alfa Tech |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Monthly** |
| Size | 33 MB | 65 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sysman srl](https://appshunter.io/developer/946937588) | [Sinapsi](https://appshunter.io/developer/1062396779) |

## What reviewers say

### Contact Pro IoT

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Alfa Tech

[App page](https://appshunter.io/ios/app/alfa-tech/id6447767258)

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

**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 Alfa Tech free?

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

### Do Contact Pro IoT or Alfa Tech have ads?

Neither Contact Pro IoT nor Alfa Tech shows ads.

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

Contact Pro IoT ships an update every 18 months, and Alfa Tech monthly. Most recently, Contact Pro IoT was updated on October 12, 2026 and Alfa Tech on October 24, 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.*