# SOS Remote vs My Copy Book 我的練習簿

The clearest difference is in-app purchases: SOS Remote at none against My Copy Book 我的練習簿's 2. SOS Remote also leads on update cadence (every 8 months vs every 25 months) and device support (3 vs 1). My Copy Book 我的練習簿's advantage is iOS requirement (7.0 vs 18.6). On price and ads there is nothing between them.

Both are free to download. My Copy Book 我的練習簿 sells 2 one-off in-app purchases. SOS Remote asks for nothing beyond the download.

SOS Remote ships an update every 8 months, My Copy Book 我的練習簿 every 25 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SOS Remote | My Copy Book 我的練習簿 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sos-remote/id476665630/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 25 months |
| Monetization | Free | — |
| Size | 4 MB | 21 MB |
| Requires iOS | 18.6 | **7.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [NOAA Science On a Sphere](https://appshunter.io/developer/476665633) | [Man Ki David yau](https://appshunter.io/developer/1057480519) |

## What reviewers say

### SOS Remote

[App page](https://appshunter.io/ios/app/sos-remote/id476665630)

Control a Science On a Sphere® system with your mobile device. Adjust sphere orientation, manage datasets, and enhance presentations with interactive features. Ideal for educational settings.

**Highlights:** Adjust sphere orientation, Control dataset playback, Load presentation playlists, Search and browse data catalog, View dataset descriptions, Create presentation playlists, Draw on and zoom datasets, Dynamically adjust dataset layers

**In-app purchases:** none


### My Copy Book 我的練習簿

[App page](https://appshunter.io/ios/app/my-copy-book/id477732223)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| English Package 英語包 | $1.99 | one-time |
| Traditional Chinese Package 繁體中文包 | $3.99 | one-time |


## Frequently asked questions

### Is SOS Remote free?

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

### Is My Copy Book 我的練習簿 free?

My Copy Book 我的練習簿 is free to download, with in-app purchases available.

### Do SOS Remote or My Copy Book 我的練習簿 have ads?

Neither SOS Remote nor My Copy Book 我的練習簿 shows ads.

### Which is updated more often, SOS Remote or My Copy Book 我的練習簿?

SOS Remote ships an update every 8 months, and My Copy Book 我的練習簿 every 25 months. Most recently, SOS Remote was updated on November 1, 2026 and My Copy Book 我的練習簿 on November 6, 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.*