CoronaSDR vs Flipper Map
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CoronaSDR
This application allows users to connect to and control RTL-SDR servers on their local network. It provides live spectrum and waterfall displays, various demodulation modes, and DSP controls for audio filtering and signal tuning. Users can save favorite stations and adjust RF settings.
- Live spectrum and waterfall display
- Multiple demodulation modes (AM, NFM, WFM, USB, LSB, CW)
- DSP controls (squelch, AGC, filters)
- Station favorites with import/export
- RF controls (PPM, tuner options)
- Diagnostics and performance pipeline
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CoronaSDR is an iOS app for listening to rtl_tcp SDR servers over your local network. Key features: - Live spectrum and waterfall rendering - Demodulation modes: AM, NFM, WFM, USB, LSB, CW - DSP controls: squelch, AGC, audio filters, de-emphasis - Station favorites with import/export - RF controls such as PPM and tuner options (hardware/server dependent) - Diagnostics and a performance-focused pipeline No account is required. Set your rtl_tcp host and port, connect, and tune. Built by Silviu YO6SAY for the radio community.
Flipper Map
This app displays your saved Sub-GHz signal files from a compatible device on an interactive map. You can then trigger these signals, like garage doors or gates, with a single tap directly from your phone, watch, or car.
- Display Sub-GHz signals on an interactive map
- Trigger signals with one tap
- Manage signals (rename, delete, move)
- Live Activities for lock screen notifications
- Apple Watch and CarPlay integration
- Siri and Shortcuts automation
- Detect and group duplicate/similar signals
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Flipper Map connects to your Flipper Zero over Bluetooth and displays your Sub-GHz signal files on an interactive map. See exactly where your saved signals are located and trigger them when you're nearby. Control garage doors, parking barriers, gates, and more with just one tap. FEATURES Attach GPS locations to your signal files and view them as pins on the map. The app shows how far away you are and helps you quickly find the right signal. When you get close to a saved signal, a Send button appears automatically. Tap once to transmit, or hold to keep sending. Manage your files easily – rename, delete, move signals by dragging pins on the map. No accounts needed. No cloud uploads. Your data stays on your device. LIVE ACTIVITIES Live Activities on your Lock Screen show the nearest signal and update as you move. Send signals without opening the app. APPLE WATCH With the Apple Watch app, you can browse your signals and send them directly from your wrist. CARPLAY Apple CarPlay to quickly access and send nearby signals directly from your car — perfect for opening gates or barriers without touching your phone. SIRI & AUTOMATIONS Use Siri to trigger sending of nearby signals. If you're an advanced user, check out Flipper Map actions in Shortcuts app. Automate things to your specific needs. DUPLICATES AND SIMILAR SIGNALS Detect duplicate signals and easily manage them. Group similar signals that have slightly different keys but matching patterns (e.g. Princeton button variants, Keeloq hopping codes, etc). NOTES • Requires a Flipper Zero or compatible device such as Kiisu. • GPS coordinates can be assigned directly in Flipper Map by placing a pin on the map, or automatically when using an external GPS module connected to your Flipper Zero via GPIO (Check your firmware features). DISCLAIMER: Flipper Map is not affiliated with, endorsed by, or sponsored by Flipper Devices Inc.; Flipper, Flipper Zero, and the Flipper logo are trademarks of Flipper Devices Inc. and are used for identification purposes only. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: CoronaSDR at none against Flipper Map's 3. Flipper Map's advantage is update cadence (every 9 days vs every 3 weeks). On price, rating, review sentiment and ratings volume 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. Flipper Map sells 3 in-app purchases, starting at $0.99 per month. CoronaSDR asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for CoronaSDR against 5.0 for Flipper Map. Both are backed by a comparable volume of ratings — 5 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
CoronaSDR ships an update every 3 weeks, Flipper Map every 9 days. Both last shipped on October 6, 2026.
| Parameter | CoronaSDR | Flipper Map |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) | 5.0 (6 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 5 | 6 — better |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 5 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Alien Systems S.R.L. | Levan Velijanashvili |
Customer experience
CoronaSDR
Flipper Map
In-app purchases
CoronaSDR
No in-app purchases
Flipper Map
- Pro Monthly7 Days trial$0.991 Month
- Pro Yearly14 Days trial$9.991 Year
- Lifetime Pro$34.99









