# RR4 Scheduler vs Sonos｜S1 & S2 Controller

The clearest difference is in-app purchases: RR4 Scheduler at none against Sonos｜S1 & S2 Controller's 5. RR4 Scheduler also leads on iOS requirement (12.0 vs 18.6). Sonos｜S1 & S2 Controller's advantage is update cadence (every 6 weeks vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Sonos｜S1 & S2 Controller sells 5 in-app purchases, starting at $5.99 per 7 days. RR4 Scheduler asks for nothing beyond the download.

RR4 Scheduler ships an update every 4 months, Sonos｜S1 & S2 Controller every 6 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | RR4 Scheduler | Sonos｜S1 & S2 Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (73 ratings)](https://appshunter.io/ios/app/sonoss1-and-s2-controller/id6760191648/reviews)** |
| Number of ratings | — | **73** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 26 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christian Petropolis](https://appshunter.io/developer/1528452853) | [SmartSound Systems Ltd](https://appshunter.io/developer/1883078225) |

## What reviewers say

### RR4 Scheduler

[App page](https://appshunter.io/ios/app/rr4-scheduler/id1664033101)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sonos｜S1 & S2 Controller

[App page](https://appshunter.io/ios/app/sonoss1-and-s2-controller/id6760191648)

Control your audio system from your phone. Connect speakers and headphones, stream music from various sources, and manage playback seamlessly. Discover songs and enjoy an optimized interface for a master sound experience.

**Highlights:** Connect speakers and headphones, Stream music from files and services, Identify songs, Control playback and volume, Browse audio content, Optimized interface

**Features:** Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| S1・S2 \| Control Speakers | $5.99 | per 7 days |
| S1・S2 \| Home Sound Systems | $5.99 | per 7 days |
| S1・S2 Controller for Sonos | $7.99 | per 7 days |
| Sonos S1 & S2 Controller | $19.99 | per month |
| Sonos Speaker Controller | $39.99 | per year |


## Frequently asked questions

### Is RR4 Scheduler free?

RR4 Scheduler is free to download, with no in-app purchases.

### Is Sonos｜S1 & S2 Controller free?

Sonos｜S1 & S2 Controller is free to download, with in-app purchases available.

### Do RR4 Scheduler or Sonos｜S1 & S2 Controller have ads?

Neither RR4 Scheduler nor Sonos｜S1 & S2 Controller shows ads.

### Which is updated more often, RR4 Scheduler or Sonos｜S1 & S2 Controller?

RR4 Scheduler ships an update every 4 months, and Sonos｜S1 & S2 Controller every 6 weeks. Most recently, RR4 Scheduler was updated on October 27, 2026 and Sonos｜S1 & S2 Controller on October 28, 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.*