Radio Unit vs Relic Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Relic Flow
Generate unique Lo-Fi rhythms, noise patterns, and drum loops using advanced synthesis algorithms. Explore billions of sound samples with intuitive controls and real-time audio recording. Perfect for musicians and sound designers seeking endless creative possibilities.
- Lo-Fi rhythm and drum loop generation
- Billions of unique sound samples
- Real-time audio recording to WAV
- Multiple input methods (on-screen, PC keyboard, MIDI)
- Export to WAV, SunVox, and text clipboard
- iOS Audio Unit Extension (AUv3) support
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Relic Flow is a generator of Lo-Fi rhythms, noise patterns and drum loops based on unique synthesis algorithms from NightRadio. More than 4 billion samples from the depths of the Mathematical Universe! Features: * search for new sounds with three buttons: next random set, edit code, previous set; each set of 12 sounds corresponds to a code of 8 characters; * three types of keyboards for live performing: on-screen buttons, PC keyboard, MIDI input; * several processing parameters + control via MIDI; * real-time audio recording to WAV (32-bit); * export to: WAV (one file or a set), SunVox (samples + effects in one file), text clipboard; * the LCK button freezes individual samples - they will not change during the search for new sets; * iOS Audio Unit Extension (AUv3). Double clicking on a parameter opens a window for setting the exact value. If you enable the Hold option, the notes will play endlessly, without reacting to key release (noteOff) events; turning the note on again works like turning it off; there are two ways to enable this option: 1) using the Hold parameter in the "MIDI Mapping" window; 2) by pressing the HOLD button, which appears in place of LCK while playing the musical keyboard: press HOLD, release the desired notes - then the released notes will continue to play.
Screenshots
Verdict
The clearest difference is update cadence: Radio Unit at every 2 months against Relic Flow's every 17 months. Relic Flow's advantage is price ($1.99 vs $6.99) and rating (4.8 vs 4.6). 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
Radio Unit costs $6.99 and Relic Flow $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Relic Flow holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 59 and 26 respectively. Written reviews point the same way: 81% of Radio Unit's written reviews are positive against 93% of Relic Flow's.
Radio Unit ships an update every 2 months, Relic Flow every 17 months. The most recent releases landed on September 13, 2026 and September 17, 2026 respectively.
| Parameter | Radio Unit | Relic Flow |
|---|---|---|
| Price | $6.99 | $1.99 — better |
| Rating | 4.6 (59 ratings) | 4.8 (26 ratings) — better |
| Positive reviews | 81.5% of reviews | 93.3% of reviews — better |
| Number of ratings | 59 — better | 26 |
| Update frequency | Every 2 months — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | BeepStreet | Alexander Zolotov |
Customer experience
Radio Unit
Relic Flow
In-app purchases
Radio Unit
No in-app purchases
Relic Flow
No in-app purchases









