# Bass 3500 Amplifier vs SL Echo

The clearest difference is price: SL Echo at $6.99 against Bass 3500 Amplifier's $19.99. Bass 3500 Amplifier's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Bass 3500 Amplifier costs $19.99 and SL Echo $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Bass 3500 Amplifier | SL Echo |
| --- | --- | --- |
| Price | $19.99 | **$6.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sl-echo/id6797348934/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Paid |
| Size | 58 MB | 18 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nembrini Audio](https://appshunter.io/developer/1493296895) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### Bass 3500 Amplifier

[App page](https://appshunter.io/ios/app/bass-3500-amplifier/id6790799229)

**Features:** Vision Pro support

**In-app purchases:** none


### SL Echo

[App page](https://appshunter.io/ios/app/sl-echo/id6797348934)

This audio effect app provides animated delay and space for musical decisions on iPad. Easily adjust time, feedback, and tone for various repeat styles, while maintaining a clear dry signal with stereo width and ducking. It supports AUv3 integration with popular music hosts.

**Highlights:** Animated delay and space effects, Adjustable time and feedback, Tone shaping controls, Stereo width and ducking, AUv3 support, Standalone preview mode, Factory and user presets

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bass 3500 Amplifier free?

Bass 3500 Amplifier costs $19.99, with no in-app purchases.

### Is SL Echo free?

SL Echo costs $6.99, with no in-app purchases.

### Do Bass 3500 Amplifier or SL Echo have ads?

Neither Bass 3500 Amplifier nor SL Echo shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*