RST Scope vs p(x)Card
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
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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
p(x)Card
Securely store and manage your cryptocurrency and NFTs with this hardware wallet solution. It keeps your private key offline on a card, simplifying crypto payments and asset management. Supports multiple blockchain networks for on-the-go transactions.
- Self-custody hardware wallet
- Stores private key offline on a card
- Supports multiple blockchain networks
- Authorize crypto payments
- Manage cryptocurrencies and NFTs
- NFC transaction signing
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Are you looking for the piece of paper where you wrote the private key? Now you have an easier option to store your crypto. Introducing p(x)Card. Built upon Function X and Infineon technologies SECORA™ Blockchain security solution, p(x)Card is an easy-to-use self-custody hardware wallet supporting multiple blockchain networks. The card is the private key itself. p(x)Card keeps your private key contained in your card and stays offline like your cold storage wallet. No more complicated settings. Users can use p(x)Card to authorize crypto payment or store NFTs via p(x)Card app or XPOS point-of-sale platform developed by Pundi X Labs. Cryptocurrencies and NFTs, all in one card! This app enables the p(x)Card users to sign transactions using NFC technology. The hardware wallet card is equipped with Infineon’s field-proven security chip featuring Integrity Guard security technology, supporting Global Platform Secure Channel Protocol 03 (SCP03) for secure authentication and encrypted communication. You can manage both your cryptocurrencies & NFTs using p(x)Card App: *Check the assets purchased via XPOS and stored in your card wallet *Transfer your assets from/to your another blockchain wallet. *You can also find all stores available to pay/purchase with your p(x)Card nearby. Everything is on the go. List of supported blockchain networks - Binance Smart Chain - Ethereum - f(x)Core - Polygon - Tron
Screenshots
Verdict
The clearest difference is rating: RST Scope at 5.0 against p(x)Card's 3.7. RST Scope also leads on update cadence (every 3 days vs monthly). p(x)Card's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
RST Scope holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
RST Scope ships an update every 3 days, p(x)Card monthly. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.
| Parameter | RST Scope | p(x)Card |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.7 (3 ratings) |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 3 days — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 104 MB |
| Age rating | 4+ | 4+ |
| Developer | koji kamogawa | FUNCTION X FOUNDATION |
Customer experience
RST Scope
p(x)Card
In-app purchases
RST Scope
No in-app purchases
p(x)Card
No in-app purchases
