# Frequency Converter vs SignalGen31

The clearest difference is update cadence: SignalGen31 at every 2 months against Frequency Converter's every 64 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Frequency Converter sells 3 in-app purchases, starting at $0.99 per 7 days and SignalGen31 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Frequency Converter ships an update every 64 months, SignalGen31 every 2 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Frequency Converter | SignalGen31 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/frequency-converter/id1539673060/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 64 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 19 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [Dogukan Beyzade](https://appshunter.io/developer/1845617808) |

## What reviewers say

### Frequency Converter

[App page](https://appshunter.io/ios/app/frequency-converter/id1539673060)

Easily convert frequencies between Hertz, Kilohertz, Megahertz, and Gigahertz. This tool is designed for builders, electricians, scientists, and anyone needing quick frequency conversions.

**Highlights:** Convert Hertz (Hz), Convert Kilohertz (kHz), Convert Megahertz (MHz), Convert Gigahertz (GHz), Fast conversions, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per 7 days |
| Premium Access | $1.99 | per month |
| Premium Access | $5.99 | per year |


### SignalGen31

[App page](https://appshunter.io/ios/app/signalgen31/id6755042821)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $4.99 | one-time |


## Frequently asked questions

### Is Frequency Converter free?

Frequency Converter is free to download, with in-app purchases available.

### Is SignalGen31 free?

SignalGen31 is free to download, with in-app purchases available.

### Do Frequency Converter or SignalGen31 have ads?

Neither Frequency Converter nor SignalGen31 shows ads.

### Which is updated more often, Frequency Converter or SignalGen31?

Frequency Converter ships an update every 64 months, and SignalGen31 every 2 months. Most recently, Frequency Converter was updated on October 24, 2026 and SignalGen31 on October 28, 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.*