# Frequency Converter vs PureSeal Pro

The clearest difference is in-app purchases: PureSeal Pro at none against Frequency Converter's 3. PureSeal Pro also leads on update cadence (every 2 weeks vs every 64 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Frequency Converter sells 3 in-app purchases, starting at $0.99 per 7 days. PureSeal Pro asks for nothing beyond the download.

Frequency Converter ships an update every 64 months, PureSeal Pro every 2 weeks. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Frequency Converter | PureSeal Pro |
| --- | --- | --- |
| 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 | **No** |
| Ads | No | No |
| Update frequency | Every 64 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 42 MB |
| Requires iOS | 13.4 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [Chris Lawler](https://appshunter.io/developer/1663189604) |

## 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 |


### PureSeal Pro

[App page](https://appshunter.io/ios/app/pureseal-pro/id1663189602)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Frequency Converter free?

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

### Is PureSeal Pro free?

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

### Do Frequency Converter or PureSeal Pro have ads?

Neither Frequency Converter nor PureSeal Pro shows ads.

### Which is updated more often, Frequency Converter or PureSeal Pro?

Frequency Converter ships an update every 64 months, and PureSeal Pro every 2 weeks. Most recently, Frequency Converter was updated on October 8, 2026 and PureSeal Pro on October 13, 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.*