Comparison

SDR vs VFLEX App

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

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

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.

Highlights
  • Connect to VFLEX hardware
  • Configure power supply parameters
  • Patent-pending hardware integration
  • User-friendly interface
Features
Read full description

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

VFLEX App3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

SDR ships an update every 2 weeks, VFLEX App every 3 months. Both last shipped on October 14, 2026.

Scorecard7 real differences · 3 level
SDR versus VFLEX App: the parameters behind the verdict, then further details
ParameterSDRVFLEX App
Price$49.99Free — better
Rating4.2 (67 ratings)5.0 (2 ratings) — better
Positive reviews80.0% of reviews—
Number of ratings67 — better2
Update frequencyEvery 2 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size47 MB47 MB
Age rating4+4+
DeveloperMarcus RoskoschTundra Labs

Customer experience

SDR

All ratings67 ratings
Positive79.1%
Neutral3.0%
Negative17.9%
Written reviews70 reviews
Positive80.0%
Neutral4.3%
Negative15.7%

VFLEX App

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SDR

No in-app purchases

None

VFLEX App

No in-app purchases

Questions

Is SDR free?
SDR costs $49.99, with no in-app purchases.
Is VFLEX App free?
VFLEX App is free to download, with no in-app purchases.
Which has better reviews, SDR or VFLEX App?
VFLEX App is rated higher. SDR averages 4.2 out of 5 from 67 ratings, while VFLEX App averages 5.0 from 2 ratings.
Do SDR or VFLEX App have ads?
Neither SDR nor VFLEX App shows ads.
Which is updated more often, SDR or VFLEX App?
SDR ships an update every 2 weeks, and VFLEX App every 3 months. Most recently, SDR was updated on October 14, 2026 and VFLEX App on October 14, 2026.

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