# SOS Remote vs Skeletal System Flashcards

The clearest difference is price: SOS Remote at Free against Skeletal System Flashcards's $2.99. SOS Remote also leads on update cadence (every 8 months vs every 16 months). Skeletal System Flashcards's advantage is iOS requirement (11.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

SOS Remote is free to download; Skeletal System Flashcards costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SOS Remote ships an update every 8 months, Skeletal System Flashcards every 16 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SOS Remote | Skeletal System Flashcards |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| 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 | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 16 months |
| Monetization | Free | — |
| Size | 4 MB | 19 MB |
| Requires iOS | 18.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [NOAA Science On a Sphere](https://appshunter.io/developer/476665633) | [Hasan Cakir](https://appshunter.io/developer/814343093) |

## 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


### Skeletal System Flashcards

[App page](https://appshunter.io/ios/app/skeletal-system-flashcards/id1473822986)

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

**In-app purchases:** none


## Frequently asked questions

### Is SOS Remote free?

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

### Is Skeletal System Flashcards free?

Skeletal System Flashcards costs $2.99, with no in-app purchases.

### Do SOS Remote or Skeletal System Flashcards have ads?

Neither SOS Remote nor Skeletal System Flashcards shows ads.

### Which is updated more often, SOS Remote or Skeletal System Flashcards?

SOS Remote ships an update every 8 months, and Skeletal System Flashcards every 16 months. Most recently, SOS Remote was updated on November 1, 2026 and Skeletal System Flashcards 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.*