SDR vs VFLEX App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SDR
Control compatible Icom transceivers remotely or locally from your iPad. Offers full operation, dual VFO, a logbook, and integrated digital modes like FT8/FT4, SSTV, and CW decoding.
- Remote transceiver operation
- Dual VFO and DualWatch
- Integrated logbook with ADIF support
- FT8/FT4, SSTV, and CW decoder tools
- DX-Cluster integration
- Call sign lookup and map display
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Software Defined Radio Client for Icom Transceivers and your iPad SDR-Control is a full featured iPad App to operate your Icom Transceiver at home or from around the world without additional Hard- or Software. Important: This App requires one of the following Icom Transceivers: IC-705, IC-7610, IC-9700, IC-7760 or the IC-R8600 Receiver or the new IC-7300 MK2 FACTS AND FEATURES: ■ Native iOS 26 app, backward compatible to iOS 17 ■ Compatible to any new Silicon M or older CPUs ■ Complete operation of your Icom Transceiver in all modes ■ Use the App local or to remote access of your Transceiver from any place without additional Hard- or Software ■ Dual VFO support (single Waterfall) ■ DualWatch support (Audio from both VFOs at the same time) ■ Logbook with auto logging, ADIF Im-/Export ■ UDP Log submission when using external logging software ■ Integrated full featured FT8 / FT4 Tool ■ Integrated SSTV receiver (NEW) ■ Integrated CW Decoder (NEW) ■ Integrated APRS Tool (NEW) ■ Integrated CW Keyer ■ DX-Cluster integration ■ Spots (from FT8, DX-Cluster) will be displayed in Waterfall ■ Band limits and Band-Modes will be displayed in Waterfall ■ Call sign lookup integrated ■ Displays Calls on Map with heading and distance information ■ MIDI Controller support ■ Keyboard shortcuts ■ And much more... WHAT YOU NEED: - An Icom IC-705, IC-7610, IC-9700, IC-7760 or IC-7300 MK2 Transceiver or IC-R8600 Receiver - The Transceiver needs to be connected to your Network (WiFi or LAN) - No USB cable needed or supported - An iPad that runs at least iOS 17 Find out more here: https://ham-radio-apps.com Read the Manual: http://go-to.me/sdrcontrol-ios-manual
VFLEX App
This application connects to a specific hardware product to allow users to configure various settings. It serves as a digital interface for a patented power supply system.
- Connect to VFLEX hardware
- Configure power supply parameters
- Patent-pending hardware integration
- User-friendly interface
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VFLEX is a companion to our patent pending hardware product. This app can be used to connect to a VFLEX and configure various parameters. Privacy policy: https://werewolf.us/pages/privacy Terms of service: https://werewolf.us/pages/terms
Screenshots
Verdict
The clearest difference is price: VFLEX App at Free against SDR's $49.99. VFLEX App also leads on rating (5.0 vs 4.2) and device support (3 vs 1). SDR's advantage is update cadence (every 2 weeks vs every 3 months) and ratings volume (67 vs 2). On ads and in-app purchases 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
VFLEX App is free to download; SDR costs $49.99 up front. Neither carries in-app purchases, so what you see is what you pay.
VFLEX App holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: SDR has 67 ratings behind it against 2, so its average is the more settled of the two.
SDR ships an update every 2 weeks, VFLEX App every 3 months. Both last shipped on October 14, 2026.
| Parameter | SDR | VFLEX App |
|---|---|---|
| Price | $49.99 | Free — better |
| Rating | 4.2 (67 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 67 — better | 2 |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 47 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcus Roskosch | Tundra Labs |
Customer experience
SDR
VFLEX App
In-app purchases
SDR
No in-app purchases
VFLEX App
No in-app purchases








