# M.ETRO vs Saucillator

The clearest difference is update cadence: M.ETRO at every 3 days against Saucillator's every 8 days. M.ETRO also leads on iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

M.ETRO ships an update every 3 days, Saucillator every 8 days. The most recent releases landed on August 15, 2026 and August 25, 2026 respectively.

## The numbers

| Metric | M.ETRO | Saucillator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (33 ratings)](https://appshunter.io/ios/app/saucillator/id6752227604/reviews)** |
| Number of ratings | — | **33** |
| Positive reviews | — | 92.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 8 days |
| Monetization | — | Free |
| Size | 17 MB | 93 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paolo Giorgi](https://appshunter.io/developer/1481916003) | [Green Noise LLC](https://appshunter.io/developer/1838342577) |

## What reviewers say

### M.ETRO

[App page](https://appshunter.io/ios/app/metro/id1543955749)

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

**In-app purchases:** none


### Saucillator

[App page](https://appshunter.io/ios/app/saucillator/id6752227604)

Create and play custom synthesizers and instruments on your mobile device. Manipulate oscillators and effects with touch, record live loops, and design unique sounds with a variety of timbres and customizable effects. Supports AUv3 for use in other music production apps.

**Highlights:** Custom synthesizer creation, Touchscreen oscillator manipulation, Live looping and recording, AUv3 instrument support, Multi-track looper and beat generator, Parametric EQ and filters, MIDI controller support

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

**In-app purchases:** none


## Frequently asked questions

### Is M.ETRO free?

M.ETRO is free to download, with no in-app purchases.

### Is Saucillator free?

Saucillator is free to download, with no in-app purchases.

### Do M.ETRO or Saucillator have ads?

Neither M.ETRO nor Saucillator shows ads.

### Which is updated more often, M.ETRO or Saucillator?

M.ETRO ships an update every 3 days, and Saucillator every 8 days. Most recently, M.ETRO was updated on August 15, 2026 and Saucillator on August 25, 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.*