Ring Modulator vs SL Tape
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.
SL Tape
This audio effect plugin adds vintage cassette tape warmth, saturation, and subtle pitch variations to your music. Customize the sound with six intuitive controls and save your favorite settings. Its redesigned interface features animated reels and responsive lighting for an immersive creative experience.
- Tape saturation
- Tape hiss simulation
- Pitch modulation (Wow & Flutter)
- Tape wear control
- Mix blend for original/processed audio
- Factory presets and custom saving
- Animated cassette interface
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SL Tape 2.0 is an AUv3 cassette-style audio effect for music-making apps. Add saturation, tape hiss, pitch movement and wear to drums, vocals, samples and mixes. Six controls: - Drive: tape saturation - Noise: tape hiss - Wow: slow pitch movement - Flutter: faster pitch movement - Age: tape wear - Mix: blend original and processed audio Choose from 10 factory presets or save your own settings. Preset changes move the controls smoothly. The redesigned cassette interface includes animated reels, a layered mechanism and audio-responsive lighting. Use SL Tape as an AUv3 effect in a compatible host on iPhone or iPad. The standalone app does not automatically monitor the built-in microphone through the speaker.
Screenshots
Verdict
The clearest difference is rating: Ring Modulator at 5.0 against SL Tape's 2.0. Ring Modulator also leads on price ($1.99 vs $6.99). SL Tape's advantage is iOS requirement (15.0 vs 17.0). On ratings volume, ads, in-app purchases and monetization model 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 SL Tape $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ring Modulator holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | Ring Modulator | SL Tape |
|---|---|---|
| Price | $1.99 — better | $6.99 |
| Rating | 5.0 (1 ratings) — better | 2.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | — | Every 5 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Callback Audio, LLC | VIACHESLAV ZHILTSOV |
Customer experience
Ring Modulator
SL Tape
In-app purchases
Ring Modulator
No in-app purchases
SL Tape
No in-app purchases









