# Hamina Onsite vs CarM3

The clearest difference is ads: Hamina Onsite at none against CarM3's shown. CarM3's advantage is iOS requirement (15.1 vs 18.0). On price, update cadence, 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.

Hamina Onsite ships an update fortnightly, CarM3 every 10 days. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Hamina Onsite | CarM3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (11 ratings)](https://appshunter.io/ios/app/hamina-onsite/id1662085386/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Subscription | — |
| Size | 85 MB | 64 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Hamina Wireless](https://appshunter.io/developer/1662085388) | [Alexandre Auler](https://appshunter.io/developer/1485334988) |

## What reviewers say

### Hamina Onsite

[App page](https://appshunter.io/ios/app/hamina-onsite/id1662085386)

This app allows users to measure Wi-Fi networks, create site surveys, and generate heatmaps showing coverage. It requires a subscription and compatible hardware to perform on-site data collection and synchronize results to the cloud for analysis and collaboration.

**Highlights:** Wi-Fi network measurement, Site survey creation, Heatmap generation, Point, continuous, and line survey modes, Field note addition, Cloud synchronization, Collaborative project sharing

**In-app purchases:** none


### CarM3

[App page](https://appshunter.io/ios/app/carm3/id6755984980)

**In-app purchases:** none


## Frequently asked questions

### Is Hamina Onsite free?

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

### Is CarM3 free?

CarM3 is free to download, with no in-app purchases.

### Do Hamina Onsite or CarM3 have ads?

CarM3 shows ads; Hamina Onsite does not.

### Which is updated more often, Hamina Onsite or CarM3?

Hamina Onsite ships an update fortnightly, and CarM3 every 10 days. Most recently, Hamina Onsite was updated on October 16, 2026 and CarM3 on October 5, 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.*