# rtl\_tcp SDR

> RTL-SDR Software Defined Radio

Canonical page: [https://chrome-stats.com/d/id1351164646](https://chrome-stats.com/d/id1351164646)

## Overview

- **ID:** `id1351164646`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** HotPaw Productions
- **Category:** Utilities
- **Rating:** 3.90 / 5 (32 ratings)
- **Version:** 1.5.6
- **Last updated:** 2026-01-21
- **First published:** 2018-05-02
- **Size:** 3.46 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/rtl-tcp-sdr/id1351164646)
- **Website:** [https://www.hotpaw.com/rhn/hotpaw/](https://www.hotpaw.com/rhn/hotpaw/)
- **Privacy policy:** [http://www.hotpaw.com/rhn/hotpaw/app\_privacy\_policy/](http://www.hotpaw.com/rhn/hotpaw/app_privacy_policy/)

## Description

An RTL-SDR Software Defined Radio receiver app for iOS devices.  Listen to AM, FM, SSB and CW radio signals.  View an RF spectrum and waterfall. Connect, via the rtl_tcp network protocol, to networked RTL-SDR USB peripherals.  

This app requires an external rtl_tcp server.  iOS devices do not currently support the direct connection of USB peripherals such as an RTL-SDR.  Thus, the use of this app requires network access to a server, such as a Raspberry Pi (or Mac), with an RTL-SDR unit plugged into its USB port, and running the rtl_tcp protocol at an TCP/IP network address accessible from your iOS device.  This allows a Raspberry Pi (or Mac) to act, essentially, as the USB port adapter for your iOS device.   The rtl_tcp SDR app can also connect to hfp_tcp for the Airspy HF+, rsp_tcp for SDRPlay devices, and lmm_tcp for the LimeSDR Mini; see GitHub for server source code.  This app can also connect to a Hermes Lite 2 QRP transceiver directly, if it has a known IP address, or through an hl2_tcp server.

No support is provided for installing any of the rtl_tcp or other tcp software needed to use this app (with a Raspberry Pi, or otherwise).  Please do not download this app unless you are already familiar with Software Defined Radio, have an RTL-SDR or equivalent USB SDR peripheral, and have already installed and tested rtl_tcp on your Raspberry Pi, Mac, or other server.  Note that this app requires a very high bandwidth network connection in order to receive streams of real-time RF samples from an RTL-SDR.   It is recommended that your rtl_tcp server be on a wired connection rather than on the same WiFi as your iOS device.

## Rankings

- #221,228 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1351164646)