Comparison

SDR Receiver vs AuthYou!

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

Head to head
About

SDR Receiver

This app demodulates and plays AM and FM radio signals received by compatible SDR hardware. It allows users to listen to various broadcasts, manage station lists, and adjust audio settings. Requires a separate radio and host computer for operation.

Highlights
  • Demodulate AM and FM signals
  • Manage station lists (import/export)
  • Adjustable squelch and LNA gain
  • Adjustable audio filters
  • Signal strength indicator
  • AirPlay audio streaming
  • Lock Screen controls
Features
Read full description

Demodulate and play AM and FM signals received by an RTL-SDR, Airspy HF+ or SDRplay radio. Requires a radio and a host computer which are not provided with SDR Receiver and must be separately installed and configured. Streams data from an rtl_tcp, hfp_tcp or rsp_tcp server application which are free and open source applications. The appropriate server application must be installed on the host computer and configured for the attached radio. SDR Receiver is a Software Defined Radio (SDR) that processes, demodulates and plays AM, narrowband FM and wideband FM signals. Listen to communications from aircraft (AM), amateur repeaters and VHF handhelds, police and fire, NOAA weather reports (narrowband FM) and commercial broadcasts (wideband FM). • Easily entered and managed lists of stations simplify station selection. • Export and import lists of stations in CSV or TSV format. • Adjustable squelch that works for both AM and FM signals. • Adjustable LNA gain (for RTL-SDR and SDRplay radios). • Adjustable audio high pass and low pass filters. • Audio AGC for AM, optimized for aircraft communications. • Selectable IQ Offset eliminates DC errors. • DC Blocker option reduces spurious errors. • Signal strength indicator that shows power level in the signal passband. • Multiple sampling rates to accommodate different network bandwidths. • Selectable 8-bit or 16-bit sample size streaming from Airspy HF+ and SDRplay radios. • Option to play audio over AirPlay to a HomePod, HomePod mini or any AirPlay compatible device. • Stream synchronized audio to multiple AirPlay 2 compatible devices. • Lock Screen shows controls and streaming station information. • Custom URLs enable another application on the same device to set the station and start streaming. • Supports VoiceOver. SDR Receiver processes signals that are streamed over the network from a host computer (Mac, PC or Raspberry Pi) that is attached by USB bus to an RTL-SDR, Airspy HF+ or SDRplay radio. An rtl_tcp server or equivalent application running on the host computer receives baseband IQ data from the radio and streams the sampled signals over the network to the iPhone or iPad running SDR Receiver. Requires an RTL-SDR, Airspy HF+ or SDRplay radio and a host computer which are not provided with the application. Support for 192 ksps and 384 ksps Airspy HF+ sampling rates requires Airspy HF+ firmware version R3.0.7 or later, and hfp_tcp version v.1.2.117 or later.

About

AuthYou!

Features
Read full description

A dedicated app for authentication only. Passwordless since activation, super easy. Web access through QR code scanning. Web SSO through federated services. Second factor integrated according to TOTP RFC 4226. Password manager as extra feature, both account and password encrypted. Phone Number validation as third channel Detailed info at https://www.authyou.systems/docs/info.php

Screenshots

SDR Receiver4 screens
AuthYou!4 screens

Verdict

The call

The clearest difference is price: AuthYou! at Free against SDR Receiver's $9.99. AuthYou! also leads on update cadence (every 4 weeks vs every 4 months) and iOS requirement (11.0 vs 17.0). On ads, in-app purchases and device support 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

AuthYou! is free to download; SDR Receiver costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SDR Receiver ships an update every 4 months, AuthYou! every 4 weeks. The most recent releases landed on October 14, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 7 level
SDR Receiver versus AuthYou!: the parameters behind the verdict, then further details
ParameterSDR ReceiverAuthYou!
Price$9.99Free — better
Rating4.1 (15 ratings) — better—
Positive reviews73.1% of reviews—
Number of ratings15 — better—
Update frequencyEvery 4 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.011.0 — better
Further details — not scored
Size2 MB34 MB
Age rating4+4+
DeveloperTransition Technology Ventures, LLCGiovanni Candotti

In-app purchases

None

SDR Receiver

No in-app purchases

None

AuthYou!

No in-app purchases

Questions

Is SDR Receiver free?
SDR Receiver costs $9.99, with no in-app purchases.
Is AuthYou! free?
AuthYou! is free to download, with no in-app purchases.
Do SDR Receiver or AuthYou! have ads?
Neither SDR Receiver nor AuthYou! shows ads.
Which is updated more often, SDR Receiver or AuthYou!?
SDR Receiver ships an update every 4 months, and AuthYou! every 4 weeks. Most recently, SDR Receiver was updated on October 14, 2026 and AuthYou! on September 28, 2026.

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