RST Scope vs BetterCallGuard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Read full descriptionHide full description
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
BetterCallGuard
Block unwanted promotional and spam calls efficiently. This app uses smart algorithms to block calls in bulk by number segments without tracking your private data, ensuring your privacy and peace of mind.
- Block promotional/spam calls
- Bulk blocking by number segments
- Whitelist specific numbers
- iCloud synchronization
- User data and privacy security
Read full descriptionHide full description
Tired of unwanted promotional calls? Concerned about other call-blocking apps invading your privacy? “BetterCallGuard” puts an end to endless telemarketing interruptions. With its powerful smart algorithms, it can block promotional calls in bulk without tracking or using any of your private data. Restore peace to your phone and bring calm back to your life. Key Features: • Block promotional/spam calls individually or in bulk by entire number segments. • Whitelist to allow specific numbers to bypass blocking. • iCloud synchronization across multiple devices. • Ensures user data and privacy security, with no storage, tagging, or tracking of any sensitive data—use with confidence.
Screenshots
Verdict
The clearest difference is price: RST Scope at Free against BetterCallGuard's $0.99. RST Scope also leads on update cadence (every 3 days vs every 6 weeks). BetterCallGuard's advantage is ads (none vs shown). On rating, ratings volume, in-app purchases 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
RST Scope is free to download; BetterCallGuard costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for RST Scope against 5.0 for BetterCallGuard. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
RST Scope ships an update every 3 days, BetterCallGuard every 6 weeks. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.
| Parameter | RST Scope | BetterCallGuard |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 days — better | Every 6 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 14 — better |
| Further details — not scored | ||
| Size | 5 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | koji kamogawa | Qingdao Chuyan Technology Co., Ltd |
Customer experience
RST Scope
BetterCallGuard
In-app purchases
RST Scope
No in-app purchases
BetterCallGuard
No in-app purchases
