Frequency Converter vs RF Engineer's Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Frequency Converter
Easily convert frequencies between Hertz, Kilohertz, Megahertz, and Gigahertz. This tool is designed for builders, electricians, scientists, and anyone needing quick frequency conversions.
- Convert Hertz (Hz)
- Convert Kilohertz (kHz)
- Convert Megahertz (MHz)
- Convert Gigahertz (GHz)
- Fast conversions
- User-friendly interface
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Frequency Converter is the fast frequency converter to convert for Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz). You can use it if you builder, electrician, scientific or another cool man. Convert frequencies quickly and as you want. --- The Terms of Use https://feelmanapp.com/terms-conditions-for-frequency-converter/
RF Engineer's Calc
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A simple RF Engineer's Calculator. Convert Watts to dBm, calculate dBm power changes, convert Return Loss to VSWR, etc...
Screenshots
Verdict
The clearest difference is in-app purchases: RF Engineer's Calc at none against Frequency Converter's 3. RF Engineer's Calc also leads on update cadence (every 10 months vs every 64 months). Frequency Converter's advantage is device support (3 vs 1) and iOS requirement (13.4 vs 16.1). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Frequency Converter sells 3 in-app purchases, starting at $0.99 per 7 days. RF Engineer's Calc asks for nothing beyond the download.
Frequency Converter ships an update every 64 months, RF Engineer's Calc every 10 months. The most recent releases landed on September 2, 2026 and September 5, 2026 respectively.
| Parameter | Frequency Converter | RF Engineer's Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 64 months | Every 10 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.4 — better | 16.1 |
| Further details — not scored | ||
| Size | 2 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Anna Filobok | GRAHAM JOHN SMITH |
In-app purchases
Frequency Converter
- Premium Access$0.997 Days
- Premium Access$1.991 Month
- Premium Access$5.991 Year
RF Engineer's Calc
No in-app purchases
