# Stereo Modulator vs SL Tune

The clearest difference is update cadence: SL Tune at every 9 days against Stereo Modulator's every 3 months. Stereo Modulator's advantage is price ($2.99 vs $7.99) and ratings volume (3 vs 1). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Stereo Modulator costs $2.99 and SL Tune $7.99 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 Stereo Modulator against 5.0 for SL Tune. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Stereo Modulator ships an update every 3 months, SL Tune every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Stereo Modulator | SL Tune |
| --- | --- | --- |
| Price | **$2.99** | $7.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/stereo-modulator/id1370816026/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sl-tune/id6797349071/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 2 MB | 37 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blue Mangoo Consulting Company Limited](https://appshunter.io/developer/1475107602) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### Stereo Modulator

[App page](https://appshunter.io/ios/app/stereo-modulator/id1370816026)

This audio effect plugin transforms mono sound into stereo, adding width and depth. It uses micro-delays to create a natural sense of space, with optional LFO modulation for a Leslie speaker-like effect without pitch shifting. Ideal for creating separation in mixes, especially for guitars and vocals.

**Highlights:** Mono to stereo conversion, Adjustable stereo width, Optional LFO modulation, Micro-delay de-correlators, Creates natural spatial depth, No pitch shifting or echo

**Features:** macOS Compatibility

**In-app purchases:** none


### SL Tune

[App page](https://appshunter.io/ios/app/sl-tune/id6797349071)

This app offers vocal pitch and tone effects for iPad, providing quick corrective or creative processing. It features fast pitch correction, modern vocal tone shaping, and mix control for flexible audio manipulation. It supports AUv3 for integration with compatible music hosts.

**Highlights:** Fast pitch correction, Modern vocal tone shaping, Mix control, Factory and user presets, AUv3 support

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

**In-app purchases:** none


## Frequently asked questions

### Is Stereo Modulator free?

Stereo Modulator costs $2.99, with no in-app purchases.

### Is SL Tune free?

SL Tune costs $7.99, with no in-app purchases.

### Which has better reviews, Stereo Modulator or SL Tune?

Stereo Modulator and SL Tune are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Stereo Modulator or SL Tune have ads?

Neither Stereo Modulator nor SL Tune shows ads.

### Which is updated more often, Stereo Modulator or SL Tune?

Stereo Modulator ships an update every 3 months, and SL Tune every 9 days. Most recently, Stereo Modulator was updated on October 24, 2026 and SL Tune on October 24, 2026.

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