E vs SL Air
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
E
This app creates a rich, animated stereo soundscape using four modulated delay voices. It can be used as a standalone audio application or as an AUv3 effect within other compatible music production apps.
- Four independently timed ensemble voices
- Adjustable rate from 0.1 to 5 Hz
- Equal-power dry/wet blending
- Width control for stereo imaging
- Standalone app and AUv3 effect
- Instrument and line input modes
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E-Chorus is a four-voice ensemble chorus for iPhone and iPad. Use it as a standalone audio app or insert the included AUv3 effect in a compatible host such as GarageBand. Four modulated delay voices use different base delay times and rate offsets to create a dense, smooth sound without relying on one obvious sweep. The result can move from focused widening to a spacious animated wash while keeping the source present. FEATURES - Four independently timed ensemble voices - Rate control from 0.1 to 5 Hz - Equal-power Depth dry/wet blending - Width control from focused mono to spacious stereo - Instrument and line input modes - Output level from -12 to +12 dB - Optional 2x and 4x oversampling - Mono and stereo processing - Standalone iOS/iPadOS app - AUv3 audio effect for compatible hosts TRY BEFORE UNLOCKING The app provides 10 minutes of full-featured active use, shared between the standalone app and AUv3 extension. Demo time advances only while audio is actively processing. A one-time, non-consumable In-App Purchase unlocks unlimited use in both formats. Restore Purchases is available in the standalone app. E-Chorus works well on synthesizers, electric piano, guitar, vocals, pads, and other sources that need width without losing their center.
SL Air
Enhance your audio with this AUv3 effect, designed to add brightness, presence, and stereo width. Achieve a polished top-end for vocals, drums, samples, and full mixes with intuitive controls and a motion display.
- Controlled brightness (Air & Lift)
- Smoother high-frequency detail (Silk)
- Stereo expansion (Wide)
- Polished finish (Glow)
- Audio-reactive motion display
- Factory and user presets
- AUv3 support
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SL Air is a streamlined AUv3 audio effect for adding brightness, presence, stereo width and a polished top end to vocals, drums, samples and mixes. • Air and Lift for controlled brightness • Silk for smoother high-frequency detail • Wide for stereo expansion • Glow for a polished finish • Audio-reactive motion display • Factory presets and local user presets • AUv3 support for compatible iPad music hosts Works as a standalone preview app and as an AUv3 effect in GarageBand, AUM, Cubasis, BeatMaker 3 and other compatible hosts.
Screenshots
Verdict
The clearest difference is price: E at Free against SL Air's $6.99. SL Air's advantage is rating (5.0 vs 2.0) and in-app purchases (none vs 1). On ratings volume, ads, device support and iOS requirement 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
E is free to download; SL Air costs $6.99 up front. E sells 1 one-off in-app purchase. SL Air asks for nothing beyond the download.
SL Air 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 | E | SL Air |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 2.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Shoma Kondo | VIACHESLAV ZHILTSOV |
Customer experience
E
SL Air
In-app purchases
E
- E-Chorus Full Version$4.99
SL Air
No in-app purchases









