# dBm Convert vs Building Wire Reliability Calc

The clearest difference is price: Building Wire Reliability Calc at Free against dBm Convert's $1.99. Building Wire Reliability Calc also leads on update cadence (every 3 weeks vs every 9 months) and iOS requirement (15.0 vs 18.2). On ads, in-app purchases and device support there is nothing between them.

Building Wire Reliability Calc is free to download; dBm Convert costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

dBm Convert ships an update every 9 months, Building Wire Reliability Calc every 3 weeks. The most recent releases landed on September 25, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | dBm Convert | Building Wire Reliability Calc |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Size | 1 MB | 6 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Open Technologies](https://appshunter.io/developer/1687898269) | [Southwire Company](https://appshunter.io/developer/440338423) |

## What reviewers say

### dBm Convert

[App page](https://appshunter.io/ios/app/dbm-convert/id6742805614)

**In-app purchases:** none


### Building Wire Reliability Calc

[App page](https://appshunter.io/ios/app/building-wire-reliability-calc/id6747445082)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is dBm Convert free?

dBm Convert costs $1.99, with no in-app purchases.

### Is Building Wire Reliability Calc free?

Building Wire Reliability Calc is free to download, with no in-app purchases.

### Do dBm Convert or Building Wire Reliability Calc have ads?

Neither dBm Convert nor Building Wire Reliability Calc shows ads.

### Which is updated more often, dBm Convert or Building Wire Reliability Calc?

dBm Convert ships an update every 9 months, and Building Wire Reliability Calc every 3 weeks. Most recently, dBm Convert was updated on September 25, 2026 and Building Wire Reliability Calc on October 11, 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.*