# S1-S2 App - Speaker Controller — Connect speaker and play music

> Cast phone audio and music to smart speakers. (iPhone/iPad app by Tran Ngoc Du.)

- Source: https://appshunter.io/ios/app/s1-s2-app-speaker-controller/id1585083090 (this page in markdown: same URL + `.md`)
- Developer: [Tran Ngoc Du](https://appshunter.io/developer/1534531128)
- Category: Music, Utilities, Music
- Price: Free with in-app purchases
- Rating: 2.53/5 from 321 App Store ratings · 16 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 20 MB
- Languages: English
- Released: 2021-09-09
- Data updated: 2026-09-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/s1-s2-app-speaker-controller/id1585083090/reviews.md

## What is S1?

Music from your phone or any apps, websites can be easily casted to your smart speaker.
Features:
- Connect with different speakers
- Play and cast music from iPhone
- Browse and stream music podcasts on your device with the iTunes API

Information about the auto-renewal of subscription:
- Payment will be charged to iTunes Account at confirmation of purchase
- Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
- Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. The cost depends on the selected plan
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
- Any unused portion of the free trial will be forfeited when the user purchases a subscription

Terms and conditions:
https://sites.google.com/view/tnd-app/privacy-policy
https://sites.google.com/view/tnd-app/term-of-service

## Key features

- Connect to various speakers
- Cast music from iPhone
- Stream music and podcasts
- Browse iTunes API content
- Control playback

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| S1 & S2 Controller Monthly | $12.99 | per month |
| S1 & S2 Controller Weekly | $3.99 | per 7 days |


## What do users think of S1?

Overall sentiment: negative

**Cons**

- 💸 Forced subscription model
- 🚫 App requires payment to function
- 🔗 Connection issues
- 👎 Not user-friendly
- 🔄 Constant app changes
- 💰 Unexpected fees for existing hardware
- ❌ No free functional version
- 🤷 Difficulty connecting devices

**Commonly reported bugs**

- Unable to connect devices
- Only one speaker works after upgrade
- App not compatible with older devices
- iPhone and Move cannot find each other

**Most requested features**

- Leave the app alone, stop forcing updates
- Make the app simple for all users, not just young tech people

## Recent user reviews (10 of 16)

All indexed reviews: https://appshunter.io/ios/app/s1-s2-app-speaker-controller/id1585083090/reviews.md

### 1/5 — Don’t waste your time

*2024-02-14, version 1.0*

Can’t even explore the app without paying $5 a week!

### 1/5 — Ridiculous

*2023-11-19, version 1.0*

It is ridiculous to expect people to pay a monthly or weekly service to get speakers to connect and work. Extremely disappointed.

### 1/5 — Bad

*2023-08-19, version 1.0*

They try to force you into signing up for a subscription

### 1/5 — No connection

*2023-07-31, version 1.0*

Unable to connect my devices to this app

### 1/5 — Subscription?

*2023-07-27, version 1.0*

Lame.

### 1/5 — If you want people to keep Sonos

*2023-06-10, version 1.0*

Stop changing the app and making people update, just leave it alone.

### 1/5 — $$$$$

*2023-01-02, version 1.0*

Since when did we have to pay premium $$$ for a speaker or speakers and then pay a monthly fee to boot.  Taking my “S2 only” devices back.  I will stick w S1, thanks.

### 1/5 — No service

*2022-12-30, version 1.0*

As soon as you try to use this app it automatically offers you a premium subscription. If you try to use what you just downloaded nothing happens, so there is only a paid service, no real working app.

### 1/5 — Horrible App NOT USER FRIENDLY

*2022-12-21, version 1.0*

Why is everything so difficult with Sonos???

### 2/5 — Free use

*2022-11-11, version 1.0*

Will not let you select limited use.

## Frequently asked questions about S1

### What does the S1-S2 App do?

This app allows you to cast music and audio from your phone, including content from other apps and websites, to your smart speaker. It facilitates easy connection and playback control for a seamless listening experience.

### How do I connect my speaker?

The app supports connecting with different types of speakers. You can initiate the connection process through the app's interface to pair your device with your chosen smart speaker.

### Is this app free to use?

The app is free to download and use, with options for in-app purchases. Subscription details, including costs and auto-renewal, are available within the app's settings and terms of service.

### What kind of content can I stream?

You can stream music from your iPhone, as well as browse and stream music and podcasts directly from your device using the iTunes API. Audio from any app or website on your phone can also be cast.

### Can I manage my subscription?

Yes, subscriptions can be managed by the user. Auto-renewal can be turned off by navigating to your Account Settings after making a purchase. Any unused portion of a free trial will be forfeited upon purchasing a subscription.

## Version history (last 1 release)

### 1.0 — 2021-09-10

No release notes.

## More apps by Tran Ngoc Du

- [Cloud App Drive - File Storage](https://appshunter.io/ios/app/cloud-app-drive-file-storage/id1534531126)
- [S1+S2 Controller:Wi-Fi Speaker](https://appshunter.io/ios/app/s1-plus-s2-controllerwi-fi-speaker/id1585320829)

All apps by Tran Ngoc Du: https://appshunter.io/developer/1534531128

## Related topics

[connect2 speakers](https://appshunter.io/ios/topics/connect2-speakers) · [sonos one sl](https://appshunter.io/ios/topics/sonos-one-sl)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*