WebSDR vs Moon Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WebSDR
This Audio Unit plugin allows musicians to incorporate live radio broadcasts into their music. It accesses Software Defined Radio streams from servers worldwide, offering unique audio textures for performances and mixes.
- Plays Software Defined Radio streams
- Integrates live radio audio into music
- Accesses global radio servers
- Supports various radio modes (LSB, USB, CW, AM, FM)
- Provides unique audio textures for mixes
Read full descriptionHide full description
WebSDR is an Audio Unit Plugin that plays audio from Software Defined Radio (SDR) streams. It allows you to incorporate the sound of live radio into a live music performance. WHAT IS SOFTWARE DEFINED RADIO? A software defined radio is a device with an antenna that connects to a computer and allows it to receive live radio broadcasts. It features a wide variety of protocols; in addition to standard AM and FM modes found in most consumer radios it typically includes modes for LSB, USB, CW and other settings used to listen in on the CB radios used by taxi drives, marine weather stations, air traffic control towers, amateur radio enthusiasts and many other types of radio broadcasts. The signals you can access using this app are not your own local radio stations; rather they are the radio stations in the vicinity of a collection of free servers, many of them operated by universities. These servers are positioned in many different countries around the world so using this plugin you can listen in on a variety of radio signals in a wide variety of languages and cultures. WHAT DO PEOPLE USE THIS PLUGIN FOR? The crackly sound of an old-style AM broadcast or a conversation between taxi drivers on a CB radio is a musical flavour that can not be replicated with other plugins. If you are looking for some really unique and interesting material to include in your performances or mixes, this plugin will supply. LIMITATIONS This plugin requires Javascript in order to play sound. Unfortunately that means that the UI must be open the entire time you are using it. When the UI is closed Javascript stops running, similar to the way a website stops playing audio when you close a tab in your browser. NOTE: THIS IS AN AUDIO UNIT PLUGIN. IT RUNS INSIDE A HOST APP SUCH AS GarageBand.
Moon Echo
This free music app simulates echoes using the moon as a radio wave reflector. It creates unique, lively, and lo-fi effects modulated by celestial movements, offering a playful tool for both musicians and space enthusiasts.
- Moon-based echo simulation
- Lo-fi musical effect
- Celestial modulation
- Space education tool
- AUv3 and Standalone support
Read full descriptionHide full description
In our seventh collaboration with Berlin-based musician Hainbach we listen to the stars: Moon Echo is a free to download delay based on a communications technique that uses our closest cosmic neighbor, the moon, as a reflector for radio waves. This results in some rather crunchy and lively echoes, modulated by the movement of Earth and moon. The moon's surface is an imperfect mirror and creates artifacts, unlike any other echo technique. Moon Echo is both a musical lo-fi effect and a playful tool for teaching about space. Available as AUv3 and Standalone.
Screenshots
Verdict
The clearest difference is review sentiment: Moon Echo at 100% against WebSDR's 21%. Moon Echo also leads on price (Free vs $5.99) and rating (4.8 vs 2.4). On ratings volume, 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
Moon Echo is free to download; WebSDR costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Moon Echo holds the better App Store score, 4.8 against 2.4. Both are backed by a comparable volume of ratings — 27 and 20 respectively. Written reviews point the same way: 21% of WebSDR's written reviews are positive against 100% of Moon Echo's.
| Parameter | WebSDR | Moon Echo |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 2.4 (27 ratings) | 4.8 (20 ratings) — better |
| Positive reviews | 20.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 27 — better | 20 |
| Update frequency | Every 11 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Mangoo Consulting Company Limited | AudioThing Ltd. |
Customer experience
WebSDR
Moon Echo
In-app purchases
WebSDR
No in-app purchases
Moon Echo
No in-app purchases









