Ring Modulator vs AE975
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ring Modulator
This app creates unique metallic and bell-like timbres by multiplying two audio signals. It offers three modes for versatile sound design, from internal oscillators to sidechaining external audio.
- Ring modulation effect
- Dual input capability
- Three distinct modes (OSC+OSC, INPUT+OSC, INPUT+SIDECHAIN)
- Mono and stereo input support
- Adjustable carrier and modulator frequencies
- Mix and output gain controls
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Ring modulation multiplies two signals together sample by sample. The result contains the sum and difference of their frequencies, the sidebands, while the original carrier and modulator tones are suppressed. This produces the metallic, bell-like, and clangorous inharmonic timbres associated with classic ring modulators, from robot voices to detuned percussion. Signal path: the carrier is multiplied by the modulator to form the wet signal, Mix blends that against the dry carrier, and Output applies a final makeup gain. Ring Modulator is usable in three modes and can take either mono or stereo inputs. The host app must support mixing to bus inputs or sidechaining in order to use Ring Modulator with dual input. Outputs mono signal. OSC + OSC Both carrier and modulator are internal sine oscillators, set by Car Freq and Mod Freq. Produces classic two-tone ring modulation with no input required, good for bell tones and metallic drones. INPUT + OSC The carrier is your track's audio and the modulator is the internal sine at Mod Freq. This is the standard ring-mod effect: it turns voices and instruments metallic or robotic and adds inharmonic sidebands. This is the default mode. INPUT + SIDECHAIN The carrier is the main input and the modulator is a second, independent input routed into the plugin's sidechain bus. Use it to ring-modulate one track by another, for example a vocal shaped by a drum loop or synth pad. This requires a host that supports sidechain routing; if nothing is routed to the sidechain, the input passes through dry. Car Freq and Mod Freq do not apply in this mode.
AE975
Enhance audio tracks with presence, articulation, and density using a parallel processing path. This AUv3 audio effect offers subtle polish and detailed control for mixing and mastering.
- Parallel processing with sidechain
- Sound-shaping controls (Focus, Enhance, Texture, Saturation, Density)
- AUv3 compatibility for DAWs
- Standalone companion host app
- 92 categorized factory presets
- iCloud preset sync
- MIDI Learn for controller mapping
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Give tracks presence without flattening the source. Add air, articulation, and density through a tuned parallel path. AE975 is an AUv3 audio effect for subtle polish, forward detail, and playable control. AE975 keeps the dry signal as the foundation, listens to a Focus-controlled sidechain, generates source-derived harmonic texture, and blends the result back in parallel. The goal is mix-ready lift without treating brightness like a simple EQ boost. Sound-shaping controls: - Focus sets the responsive region from 600 Hz to 6 kHz, with 3 kHz at center. - Enhance controls the parallel return depth. - Texture changes harmonic color and complexity. - Saturation adds intensity inside the enhancement generator, not as a full-band clipper. - Density moves from clean transient sparkle to smoother sustained glow. - Mix, Output, and Bypass make level-matched comparison simple. Built for DAW workflows: - Use AE975 as an audio effect in compatible AUv3 hosts. - Open the standalone companion host app to audition the processor with generated test audio, or compatible hardware I/O. - Browse 92 categorized factory presets for mastering, mixing, buses, vocals, guitars, bass, drums, synths, strings, brass, woodwinds, and sound design. - Save user presets locally and mirror them with iCloud preset sync. - Map hardware controllers with MIDI Learn, direct CC assignment, reset-to-default controls, and feedback broadcast support. Use it when a vocal needs to read forward, drums need more snap, guitars need pick detail, synths need shine, strings need rosin, buses need polish, or a master needs a controlled final lift.
Screenshots
Verdict
The clearest difference is price: Ring Modulator at $1.99 against AE975's $19.99. AE975's advantage is device support (4 vs 2). On rating, ratings volume, ads and in-app purchases 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
Ring Modulator costs $1.99 and AE975 $19.99 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 — 5.0 for Ring Modulator against 5.0 for AE975. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | Ring Modulator | AE975 |
|---|---|---|
| Price | $1.99 — better | $19.99 |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Callback Audio, LLC | Christian Thompson |
Customer experience
Ring Modulator
AE975
In-app purchases
Ring Modulator
No in-app purchases
AE975
No in-app purchases









