Comparison

RST Scope vs QTH Grid Square Locator

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

QTH Grid Square Locator

Calculate your Maidenhead grid locator accurately using your device's GPS. This tool is designed for amateur radio operators, offering real-time calculations and offline functionality for contests and DX communication.

Highlights
  • Real-time GPS location calculation
  • Maidenhead grid system support
  • Offline functionality
  • Interactive map view
  • Optimized for amateur radio
Features
Read full description

QTH Locator is a practical tool designed for amateur radio operators, allowing them to easily calculate their location using the Maidenhead grid system. This app is specially designed for radio enthusiasts who need precise and reliable results for location calculations. Whether you are participating in a radio contest or engaging in DX communication, QTH Locator provides accurate GPS-based results and works even in offline mode. Main Features: - Real-Time GPS Location Calculation: The app utilizes your device's GPS to accurately determine your Maidenhead grid locator in real time. - Efficient and Accurate: Instantly calculates your grid locator to enhance communication with other radio operators. - Offline Functionality: Calculate your QTH locator even without an internet connection, ideal for remote locations. - Optimized for Amateur Radio Activities: Perfect for radio contests, field operations, and DX communications. - Interactive Map View: Visualize your grid locator directly on an integrated map for an enhanced user experience. About Amateur Radio Amateur radio, also known as ham radio, is a popular hobby where licensed users communicate across various radio frequencies. The QTH locator system plays a vital role in this field, helping operators accurately calculate their position, making it easier to connect with others worldwide, especially during contests and DX activities. Whether you're an experienced operator or a beginner, calculating your QTH location is crucial for effective communication. Download QTH Locator today and enhance your amateur radio experience with accurate and efficient location calculation tools.

Screenshots

RST Scope3 screens
QTH Grid Square Locator3 screens

Verdict

The call

The clearest difference is ads: QTH Grid Square Locator at none against RST Scope's shown. QTH Grid Square Locator also leads on update cadence (daily vs every 3 days) and monetization model (free vs ad-supported). RST Scope's advantage is 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, QTH Grid Square Locator daily. The most recent releases landed on August 22, 2026 and June 5, 2026 respectively.

Scorecard4 real differences · 6 level
RST Scope versus QTH Grid Square Locator: the parameters behind the verdict, then further details
ParameterRST ScopeQTH Grid Square Locator
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 3 daysDaily — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size5 MB3 MB
Age rating4+4+
Developerkoji kamogawaUgur Altinsoy

Customer experience

RST Scope

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

QTH Grid Square Locator

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

RST Scope

No in-app purchases

None

QTH Grid Square Locator

No in-app purchases

Questions

Is RST Scope free?
RST Scope is free to download, with no in-app purchases.
Is QTH Grid Square Locator free?
QTH Grid Square Locator is free to download, with no in-app purchases.
Do RST Scope or QTH Grid Square Locator have ads?
RST Scope shows ads; QTH Grid Square Locator does not.
Which is updated more often, RST Scope or QTH Grid Square Locator?
RST Scope ships an update every 3 days, and QTH Grid Square Locator daily. Most recently, RST Scope was updated on August 22, 2026 and QTH Grid Square Locator on June 5, 2026.

Other comparisons