RST Scope vs OnDuty App
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
OnDuty App
This AI-powered field companion assists paramedics and EMTs with clinical decision support and shift management. It offers a streamlined alternative to traditional binders and PDFs, designed for high-stress emergency situations.
- AI-powered clinical decision support
- Shift schedule management
- Streamlined workflow
- Pocket-sized tool
- Designed by veteran paramedic
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Your Partner on Every Call. The tones just dropped. You don't have time to dig through a torn 300-page binder or thumb through a clunky PDF while your patient needs you. OnDuty puts everything you need in your pocket — built by a working paramedic who's lived the job, not a tech company guessing at it. Built for the rig, not the boardroom: AI Clinical Assistant — Ask a question in plain language, get protocol-grounded answers in seconds, not scrolling. Jurisdiction-Specific Protocols — Your agency's actual protocols, verified and organized by category — not generic guidelines that don't match your scope. Real-Time Hospital Finder — Nearest receiving facilities with real capabilities — trauma, STEMI, stroke — so transport decisions are fast and confident. AI PCR Narrative Generator — Turn your call notes into a clean, complete narrative in a fraction of the time. Instant Dosage Calculator — Weight-based meds, done in seconds when seconds matter. Shift & Pay Tracker — Manage your grueling schedule and know exactly what you're earning. CME & Certification Tracker — Stop losing your card to a missed deadline. One app. Built by someone who's actually run the calls. Subscription Details: OnDuty is available with a 14-day free trial. After the trial, full access requires an auto-renewing subscription — $3.99/month or $29.99/year. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/theondutyapp.com/the-onduty-app/privacy-policy?authuser=0
Screenshots
Verdict
The clearest difference is in-app purchases: RST Scope at none against OnDuty App's 2. OnDuty App's advantage is ads (none vs shown). On price, rating, ratings volume and update cadence 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. OnDuty App sells 2 in-app purchases, starting at $2.99 per month. RST Scope asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for RST Scope against 5.0 for OnDuty App. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.
| Parameter | RST Scope | OnDuty App |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 days | Every 3 days |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 20 MB |
| Age rating | 4+ | 17+ |
| Developer | koji kamogawa | Dan Jones |
Customer experience
RST Scope
OnDuty App
In-app purchases
RST Scope
No in-app purchases
OnDuty App
- Monthly subscription14 Days trial$2.991 Month
- Yearly Subscription$29.991 Year









