TRF vs E
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TRF
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The app is designed for use with TRF-DSP.This app gives you tools needed to fine tune virtually every aspect of your car audio system. Whether you are a professional installer or an obsessive audiophile This app allows you to fully experience the professionalism and power of the TRF-DSP. Features: ·15 bands Input EQ + 31 bands output EQ parametric equalization per channel ·Phase correction ·Crossover type,frequency,and slope adjustments· ·Independent input and output level controls ·Time alignment ·Input summing and linking ·6 customizable presets ·Bluetooth 5.3 compatible
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.
Screenshots
Verdict
The clearest difference is in-app purchases: TRF at none against E's 1. TRF also leads on iOS requirement (9.0 vs 16.0). On price, ads 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
Both are free to download. E sells 1 one-off in-app purchase. TRF asks for nothing beyond the download.
| Parameter | TRF | E |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 19 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | 伟 陈 | Shoma Kondo |
In-app purchases
TRF
No in-app purchases
E
- E-Chorus Full Version$4.99









