Sinusoid vs Radio Unit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sinusoid
Create music with a retro 8-bit inspired sound machine. Features 4 channels for tones and drums, with extensive sound sculpting options like filters, modulation, and effects. Export your creations and integrate with other music apps.
- 4 sound channels (3 tones, 1 drum/noise)
- Extensive audio parameters (envelope, vibrato, glide, filter)
- Ring modulation and FM synthesis
- Arpeggiator, delay, and bit crusher effects
- MIDI input and output support
- Audiobus, IAA, and AUv3 integration
- AIFF export and in-app music player
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Sinusoid is a tracker/sequencer sound machine inspired by retro 8 bit game consoles. It has 4 sound channels where 3 play tones and 1 plays drums and noise. It has audio parameters like pan, amplitude envelope, vibrato, pitch glide, a resonant filter and second oscillator for ring modulation and fm. Further sculpt the sound with an arpeggiator, delay and bit crusher. Export songs to AIFF and listen to them in the in app music player or share them with other apps. MIDI can be used to control parameters, play and input notes. MIDI out makes it possible to play other synths with sinusoid using Core MIDI, Bluetooth, IAA MIDI or AUv3 MIDI. Connect to other sound apps using Audiobus, Inter App Audio or AUv3. +++ 3 tone channels: sinusoid, square, triangle, saw, pulse (75%, 50%, 25% or 12.5%) +++ 1 drum/noise channel +++ Stereo pan +++ Amplitude envelope (attack, length and release) +++ 2nd oscillator for fm and ring modulation +++ Vibrato +++ Pitch glide +++ Resonant filter +++ Arpeggio/stutter +++ Tape delay +++ Bit/samplerate crush +++ Per note ability to override all channel audio parameters +++ Copy/paste between devices on the same network +++ Save and share projects using “open with” and files app drag’n drop +++ Export to songs to AIFF +++ Core MIDI, Bluetooth, IAA MIDI, AUv3 MIDI +++ Audiobus, IAA and AUv3
Radio Unit
Stream over 35,000 internet radio stations with this app. Enhance your audio experience by using it as an AUv3 plugin with other compatible music apps. Discover new music and save your favorites.
- Access 35,000+ radio stations
- Enhance audio with AUv3 plugins
- Intuitive interface
- Song discovery and saving
- Favorites sync across devices
- MIDI control for AUv3 plugin
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Discover a world of music with Radio Unit, a sleek and powerful Internet radio player with a built-in Audio Unit (AUv3) plugin. Elevate your listening experience by enhancing streaming audio in real time using your favorite third-party audio processing plugins (not included) within AUv3-compatible hosts like Drambo or GarageBand. Features: • Intuitive Interface: Enjoy a clean, user-friendly design for effortless navigation. • Song Discovery: Tap to add the currently playing song to your favorites, then open it in the Apple Music app or search for it on Google. • Massive Station Library: Access over 35,000 radio stations—search by name, browse by genre or location, and sort by popularity. • Favorites Sync: Save stations and songs to your favorites list, seamlessly synced across your devices. • AUv3 Integration: Use Radio Unit as a standalone app or as an AUv3 plugin in hosts like Drambo, GarageBand, and more, with support for multiple plugin instances. • MIDI Mapping: Control buttons can be triggered by MIDI Note events (C3 to F3). (AUv3 only) • Battery Efficient: Stream music without draining your device. The app requires internet connection.
Screenshots
Verdict
The clearest difference is rating: Sinusoid at 4.9 against Radio Unit's 4.6. Sinusoid also leads on price ($4.99 vs $6.99) and iOS requirement (9.0 vs 15.6). Radio Unit's advantage is review sentiment (81% vs 69%) and ratings volume (59 vs 13). On update cadence, 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
Sinusoid costs $4.99 and Radio Unit $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Sinusoid holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 13 and 59 respectively. Written reviews complicate that: 69% of Sinusoid's written reviews are positive against 81% of Radio Unit's, so the app with the better star average is not the one people write more warmly about.
Sinusoid ships an update every 3 months, Radio Unit every 2 months. The most recent releases landed on September 25, 2026 and September 28, 2026 respectively.
| Parameter | Sinusoid | Radio Unit |
|---|---|---|
| Price | $4.99 — better | $6.99 |
| Rating | 4.9 (13 ratings) — better | 4.6 (59 ratings) |
| Positive reviews | 68.8% of reviews | 81.5% of reviews — better |
| Number of ratings | 13 | 59 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Erik Sigth | BeepStreet |
Customer experience
Sinusoid
Radio Unit
Bugs and requests
Sinusoid
Not enough reviews yet to summarise bugs or requests.
Radio Unit
Reported bugs
17 issues- Cannot remove recognized songs
- Cannot remove favorite saved songs (Mac)
- Last update ruined experience with loading times and connection issues
- Sadé channel frequently disconnects
- Some stations don’t connect at all
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- Cannot see song title/artist
- Seamless integration with GarageBand and Logic Pro doesn't work
- Cannot change station with MIDI, LFOs etc. after update
- Cubasis 3 can’t find app
- BBC streams no longer play
- Cannot edit user slots after adding of link
- Links not working
- Cannot add user slots ('see the developer to unlock slots')
- Adding stations near impossible
- Failed URL slot flashes red and is inaccessible
- Cannot paste other URLs
- Cannot record and sample the feed into DAW
Requested features
13 requests- Option to remove or filter hostile nations
- Add more stations (Golha radio, IRIB radio)
- Ability to organize, tag, and edit stream specifications
- Ability to use with CarPlay
- Pitch slider within the app to slow down radio in real time
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- More user presets/slots
- iCloud sync for recently played stations and discovered pieces
- Ability to change station with MIDI, LFOs etc. (post-update issue)
- More exposed parameters for tweaking
- Greater resources for slots (folders/sections)
- Import/export presets list
- Assign MIDI CC to volume knob and channel switch buttons
- Support for streams in OGG container format
In-app purchases
Sinusoid
No in-app purchases
Radio Unit
No in-app purchases









