Comparison

RST Scope vs Hoptr

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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 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

About

Hoptr

Features
Read full description

Hoptr is a straightforward messaging app that lets you connect and communicate with others seamlessly. Features: • Direct messaging - Send and receive messages instantly • Clean interface - Simple, distraction-free design • Fast & lightweight - Quick to load, easy to use Stay connected with the people who matter. Hoptr focuses on what's important—your conversations. Key Features: Real-time Conversions: Get live, minute-by-minute updates on BTC to JPY/USD/EUR exchange rates. Historical Data: Explore past performance of Bitcoin against major fiat currencies. User-Friendly Interface: Easy-to-navigate design, ensuring a smooth user experience. Secure and Private: No account needed, convert currencies without compromising your data. Global Accessibility: Perfect tool for international travelers and traders.

Screenshots

RST Scope3 screens
Hoptr1 screens

Verdict

The call

The clearest difference is ads: Hoptr at none against RST Scope's shown. RST Scope's advantage is update cadence (every 3 days vs monthly) and iOS requirement (15.6 vs 18.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RST Scope ships an update every 3 days, Hoptr monthly. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 6 level
RST Scope versus Hoptr: the parameters behind the verdict, then further details
ParameterRST ScopeHoptr
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days — betterMonthly
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size5 MB9 MB
Age rating4+4+
Developerkoji kamogawaYusuke Morishita

In-app purchases

None

RST Scope

No in-app purchases

None

Hoptr

No in-app purchases

Questions

Is RST Scope free?
RST Scope is free to download, with no in-app purchases.
Is Hoptr free?
Hoptr is free to download, with no in-app purchases.
Do RST Scope or Hoptr have ads?
RST Scope shows ads; Hoptr does not.
Which is updated more often, RST Scope or Hoptr?
RST Scope ships an update every 3 days, and Hoptr monthly. Most recently, RST Scope was updated on October 13, 2026 and Hoptr on October 25, 2026.

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