HFpager vs RST Scope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HFpager
This utility app enables the exchange of short text messages through audio and radio channels using IFSK modulation. It offers basic reception and transmission functions for free, with a subscription unlocking all features and removing ads.
- IFSK modulation for audio messaging
- Send and receive short text messages
- Utilizes audio and radio channels
- Basic functions free
- Subscription removes restrictions and ads
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The program is designed to generate and receive an audio signal using IFSK (Incremental Frequency Shift Keying) modulation. Used to exchange short text messages via any audio and / or radio channel. For a detailed description, see the project website https://nvis.club/hfproxys/hfpager/hf-pager Basic functions work without a subscription: reception / transmission. With a subscription, all restrictions are removed and there is no advertising. Privacy Policy and User Agreement: https://ildd.ru/bi/hfpager/hfpager_politica/
RST Scope
This utility app provides spectrum scope and waterfall displays for amateur radio operators. It enhances radios lacking these features by analyzing microphone input, allowing for clear distinction of Morse code and detailed audio frequency visualization.
- Spectrum scope and waterfall display
- Morse code distinction via FFT
- Adjustable waterfall speed
- Adjustable audio input level
- Switchable display band (wide/narrow)
- Display pause function
- Recording and playback of input sound
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This is an app for amateur radio operators with a narrow band of audio frequency, spectrum scope & waterfall display. You can get a rich display by microphone inputting the speaker output of a radio that does not have a spectrum scope or waterfall function. The FFT allows you to distinguish between the dot and dash of Morse code. [function] 1. Ability to change the speed of the waterfall 2. Ability to adjust the level of audio input 3. Function to switch the display band between wide and narrow 4. Display pause function (pause / cancel by touching the screen) 5. Function to switch the cross hatch ON / OFF by longTap 6. Frequency resolution is fixed at 40Hz. 7. Function to switch the USB/LSB by Left/Right Swipe 8.Recording/Playback function of Input Sound RST Scope(Free) https://www.youtube.com/watch?v=1s9RvOFp52g
Screenshots
Verdict
The clearest difference is rating: RST Scope at 5.0 against HFpager's 3.0. RST Scope also leads on in-app purchases (none vs 1) and update cadence (every 3 days vs every 3 months). HFpager's advantage is iOS requirement (12.4 vs 15.6). On price, ratings volume, ads and device support 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. HFpager sells 1 in-app purchase, starting at $9.99 per year. RST Scope asks for nothing beyond the download.
RST Scope holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
HFpager ships an update every 3 months, RST Scope every 3 days. The most recent releases landed on June 4, 2026 and August 22, 2026 respectively.
| Parameter | HFpager | RST Scope |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.4 — better | 15.6 |
| Further details — not scored | ||
| Size | 26 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitry Likhtarov | koji kamogawa |
Customer experience
HFpager
RST Scope
In-app purchases
HFpager
- Подписка 12 месяцев7 Days trial$9.991 Year
RST Scope
No in-app purchases
