# SDR vs VFLEX App

The clearest difference is price: VFLEX App at Free against SDR's $44.99. VFLEX App also leads on rating (5.0 vs 4.5) and device support (3 vs 1). SDR's advantage is update cadence (every 2 weeks vs every 3 months) and ratings volume (64 vs 2). On ads and in-app purchases there is nothing between them.

VFLEX App is free to download; SDR costs $44.99 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 4.5. That said, the two scores are not equally well evidenced: SDR has 64 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. The most recent releases landed on October 11, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SDR | VFLEX App |
| --- | --- | --- |
| Price | $44.99 | **Free** |
| Rating | [4.5 (64 ratings)](https://appshunter.io/ios/app/sdr-control-mobile/id1673327509/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/vflex-app/id6753985671/reviews)** |
| Number of ratings | **64** | 2 |
| Positive reviews | 84.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 47 MB | 47 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marcus Roskosch](https://appshunter.io/developer/334053438) | [Tundra Labs](https://appshunter.io/developer/1846127411) |

## What reviewers say

### SDR

[App page](https://appshunter.io/ios/app/sdr-control-mobile/id1673327509)

Control your Icom transceiver remotely or locally from your iPhone. Operate in all modes, log QSOs, and utilize integrated digital modes like FT8/FT4 and SSTV. No extra hardware is needed for global access.

**Highlights:** Remote transceiver operation, All mode control, Auto logging logbook, Integrated FT8/FT4 tool, Integrated SSTV receiver, Integrated CW decoder and keyer, DX-Cluster integration

**In-app purchases:** none

**What reviewers like**

- 🚀 Works perfectly with ICOM radios
- 👍 Intuitive and easy to use
- 🌟 Feature-rich and comprehensive
- 💯 Stable and reliable performance
- 📱 Great for remote operation

**What reviewers complain about**

- 🐛 FT8 decoding issues (lower signal levels)
- 🐛 Dialogs do not scale with larger text setting
- 🐛 UI elements can be cramped on iPhone
- 🐛 Some buttons are small and hard to press
- 🐛 Frequency display overlaps buttons

**Reported bugs**

- Dialogs do not scale with larger text setting
- Frequency display overlaps buttons
- FT8 decoding issues (lower signal levels than WSJTX)
- App crashes and leaves radio in transmit
- Logbook export not functional after update

**Requested features**

- Develop for IC-7800
- CarPlay support
- Apple Watch add-on
- Windows version
- JS8call support


### VFLEX App

[App page](https://appshunter.io/ios/app/vflex-app/id6753985671)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SDR free?

SDR costs $44.99, 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 4.5 out of 5 from 64 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 11, 2026 and VFLEX App on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*