# SmartSDR™ vs Paylo.app

The clearest difference is price: Paylo.app at Free against SmartSDR™'s $79.99. Paylo.app also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (15.5 vs 17.6). SmartSDR™'s advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

Paylo.app is free to download; SmartSDR™ costs $79.99 up front. Paylo.app sells 1 one-off in-app purchase. SmartSDR™ asks for nothing beyond the download.

SmartSDR™ ships an update every 2 weeks, Paylo.app every 5 days. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SmartSDR™ | Paylo.app |
| --- | --- | --- |
| Price | $79.99 | **Free** |
| Rating | **[4.2 (132 ratings)](https://appshunter.io/ios/app/smartsdr-flexradio-systems/id1089157289/reviews)** | — |
| Number of ratings | **132** | — |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 57 MB | 80 MB |
| Requires iOS | 17.6 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marcus Roskosch](https://appshunter.io/developer/334053438) | [ahmet ates](https://appshunter.io/developer/1855421041) |

## What reviewers say

### SmartSDR™

[App page](https://appshunter.io/ios/app/smartsdr-flexradio-systems/id1089157289)

Control your FlexRadio SDR device from your iPad or iPhone. Access nearly all features of the desktop client, including digital modes, signal analysis, and remote operation via SmartLink. Requires compatible FlexRadio hardware.

**Highlights:** FT8 and FT4 support, SSTV TX and RX, APRS TX and RX, CW Decoder and keyer, Weather Fax decoder, Slice and Panadapter management, SmartLink remote access

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### Paylo.app

[App page](https://appshunter.io/ios/app/payloapp/id6755669630)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads. | $0.99 | one-time |


## Frequently asked questions

### Is SmartSDR™ free?

SmartSDR™ costs $79.99, with no in-app purchases.

### Is Paylo.app free?

Paylo.app is free to download, with in-app purchases available.

### Do SmartSDR™ or Paylo.app have ads?

Neither SmartSDR™ nor Paylo.app shows ads.

### Which is updated more often, SmartSDR™ or Paylo.app?

SmartSDR™ ships an update every 2 weeks, and Paylo.app every 5 days. Most recently, SmartSDR™ was updated on November 6, 2026 and Paylo.app on October 30, 2026.

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