# Combi Valve Sizer vs SoM2M IoT

The clearest difference is update cadence: SoM2M IoT at every 4 months against Combi Valve Sizer's every 9 months. Combi Valve Sizer's advantage is iOS requirement (7.0 vs 15.4). 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.

Combi Valve Sizer ships an update every 9 months, SoM2M IoT every 4 months. The most recent releases landed on June 10, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Combi Valve Sizer | SoM2M IoT |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 50 MB | 71 MB |
| Requires iOS | **7.0** | 15.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siemens AG](https://appshunter.io/developer/394503271) | [Synox](https://appshunter.io/developer/1524954759) |

## What reviewers say

### Combi Valve Sizer

[App page](https://appshunter.io/ios/app/combi-valve-sizer/id504270106)

This app simplifies the selection of specific HVAC components. It guides users through choosing the correct valve and actuator, calculates flow rates, and assists with presetting and commissioning. Users can also tag components and download reports.

**Highlights:** Guided valve and actuator selection, Valve sizing and flow calculation, Valve presetting calculation, Tagging valve location and designation, Commissioning check with reports, Data sheet downloads, Report sharing

**In-app purchases:** none


### SoM2M IoT

[App page](https://appshunter.io/ios/app/som2m-iot/id1459994073)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Combi Valve Sizer free?

Combi Valve Sizer is free to download, with no in-app purchases.

### Is SoM2M IoT free?

SoM2M IoT is free to download, with no in-app purchases.

### Do Combi Valve Sizer or SoM2M IoT have ads?

Neither Combi Valve Sizer nor SoM2M IoT shows ads.

### Which is updated more often, Combi Valve Sizer or SoM2M IoT?

Combi Valve Sizer ships an update every 9 months, and SoM2M IoT every 4 months. Most recently, Combi Valve Sizer was updated on June 10, 2026 and SoM2M IoT on May 16, 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.*