rtl_tcp SDR vs HAM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
rtl_tcp SDR
This app acts as a software-defined radio receiver for iOS devices, allowing you to listen to various radio signals and view RF spectrum data. It connects to external SDR peripherals via a network protocol, requiring a separate server setup.
- Listen to AM, FM, SSB, CW signals
- View RF spectrum and waterfall
- Connect to networked RTL-SDR peripherals
- Supports Airspy HF+, SDRPlay, LimeSDR Mini
- Direct connection to Hermes Lite 2
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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.
HAM
This utility app offers a comprehensive suite of tools for amateur radio operators, including band conditions, DX-Cluster monitoring, and a logbook. It features direct radio integration for tuning and automatic logging, along with various calculations and resource information.
- DX-Cluster and PSK-Reporter activity monitoring
- Bandplan, Glossar, and AWG resource information
- Built-in radio integration for direct tuning
- Fully featured logbook with QSO editing
- LOTW and QRZ.com log submission
- Calculations for Ohm's law, VSWR, and antennas
- CW Encoder and Decoder
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The ultimate utility App for every HAM-Radio Operator HAM-Toolbox provides a variety of useful Tools to help you operating your HAM-Radio. The Tools are ranging from activity monitoring Tools like DX-Cluster and PSK-Reporter, to Tools helping you with resource information like Bandplan, Glossar, AWG and many more Tools. HAM-Toolbox also has a built-in radio integration, so that you can directly tune to spots from the DX-Cluster and other tools. During logging, the appropriate fields for the frequency and mode will be automatically filled. With a one-time purchase you gain access to all of the following Tools on your iPhone, iPad and Mac. · TOOLS: + Band Conditions + POTA + DX-Cluster + PSK-Reporter + Reverse Beacon Network + Call-Lookup + Locator + Beacons (especially NCDXF) + Repeater + DTMF Generator + CW Encoder and Decoder + Frequency List + QSL Card Designer (design, preview, print and export your own QSL cards) · LOGBOOK: HAM-Toolbox comes with a fully featured Logbook. + Inspect and edit your existing QSOs + Easy-to-use logging interface + Maintenance (Data completion from QRZ.com, Duplicates finder, Mass change) + LOTW and QRZ.com log submission + Integrated Call-Lookup with possibility to update QSO + Worked/Needed statistics for CQ-Zones, ITU-Zones and DXCCs + Map with worked grid locators representation + iCloud-Sync with multiple devices (compatible with SDR-Control and SmartSDR) · Radio-Integration: + Frequency and Mode + Logbook integration + Direct tuning from various Tools like DXCluster, POTA, Frequency List + Supports all major Brands and Radios via Network or USB + YAESU: FT-710, FT-991, FT-DX10, FT-DX100 + Icom: IC-705, IC-7300mk2, IC-7300, IC-7610, IC-7760, IC-9700, IC-R8600, + Kenwood: TS-890, TS-990 + Elecraft: K4 + HamLib · CALCULATIONS: + Ohm's law + VSWR + Dipole-Antenna + Groundplane-Antenna + HB9CV-Antenna + Helix-Antenna + dB Conversion + Wavelength · RESOURCES: + Bandplan + Glossar + Morse + AWG + CTCSS-Codes + Formulas + Q-Codes + Abbreviations + Constants Find out more here: https://ham-toolbox.com Read the Manual: https://go-to.me/hamtoolbox-manual
Screenshots
Verdict
rtl_tcp SDR and HAM both sit at 3.9 stars, but that hides the real split: 69% of HAM's written reviews are positive against 40% of rtl_tcp SDR's. HAM also leads on update cadence (monthly vs every 4 months). rtl_tcp SDR's advantage is chart position (#191 vs unranked) and price ($12.99 vs $14.99). On rating, ads, in-app purchases and monetization model 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
rtl_tcp SDR costs $12.99 and HAM $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 3.9 for rtl_tcp SDR against 4.0 for HAM. Both are backed by a comparable volume of ratings — 32 and 7 respectively. Written reviews are what separate them: 40% of rtl_tcp SDR's written reviews are positive against 69% of HAM's.
rtl_tcp SDR ships an update every 4 months, HAM monthly. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.
| Parameter | rtl_tcp SDR | HAM |
|---|---|---|
| Price | $12.99 — better | $14.99 |
| Rating | 3.9 (32 ratings) | 4.0 (7 ratings) — better |
| Positive reviews | 40.0% of reviews | 69.2% of reviews — better |
| Number of ratings | 32 — better | 7 |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #191 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 3 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | HotPaw Productions | Marcus Roskosch |
Customer experience
rtl_tcp SDR
HAM
In-app purchases
rtl_tcp SDR
No in-app purchases
HAM
No in-app purchases









