# Sandbox Draw vs Bluetooth Microphone app

The clearest difference is in-app purchases: Sandbox Draw at none against Bluetooth Microphone app's 2. Sandbox Draw also leads on update cadence (daily vs weekly) and iOS requirement (15.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Bluetooth Microphone app sells 2 in-app purchases, starting at $4.99 per 7 days. Sandbox Draw asks for nothing beyond the download.

Sandbox Draw ships an update daily, Bluetooth Microphone app weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Sandbox Draw | Bluetooth Microphone app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sandbox-draw/id6764403978/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | Free | — |
| Size | 1 MB | 31 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dox2A Labs LLC](https://appshunter.io/developer/1460642591) | [Redvanta Software Ltd](https://appshunter.io/developer/6794076039) |

## What reviewers say

### Sandbox Draw

[App page](https://appshunter.io/ios/app/sandbox-draw/id6764403978)

Experience a unique drawing app that simulates soft, sunlit sand. Create grooves with pressure-sensitive input and feel haptic feedback. Discover hidden colorful patterns beneath the surface and easily share your creations.

**Highlights:** Pressure-sensitive sand drawing, Real-time haptic feedback, Hidden color patterns, One-tap refresh, One-tap sharing, No ads or data collection

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

**In-app purchases:** none


### Bluetooth Microphone app

[App page](https://appshunter.io/ios/app/bluetooth-microphone-app-umc/id6810118524)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| U-MIC Pro | $4.99 | per 7 days |
| U-MIC Pro | $23.99 | per year |


## Frequently asked questions

### Is Sandbox Draw free?

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

### Is Bluetooth Microphone app free?

Bluetooth Microphone app is free to download, with in-app purchases available.

### Do Sandbox Draw or Bluetooth Microphone app have ads?

Neither Sandbox Draw nor Bluetooth Microphone app shows ads.

### Which is updated more often, Sandbox Draw or Bluetooth Microphone app?

Sandbox Draw ships an update daily, and Bluetooth Microphone app weekly. Most recently, Sandbox Draw was updated on October 31, 2026 and Bluetooth Microphone app on October 31, 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.*