# Color Board vs Mobile SOS

The clearest difference is in-app purchases: Mobile SOS at none against Color Board's 1. Mobile SOS also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.6). Color Board's advantage is update cadence (every 2 months vs every 44 months). On price and device support there is nothing between them.

Both are free to download. Color Board sells 1 one-off in-app purchase. Mobile SOS asks for nothing beyond the download.

Color Board ships an update every 2 months, Mobile SOS every 44 months. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Color Board | Mobile SOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (7 ratings)](https://appshunter.io/ios/app/color-board/id385456846/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 44 months |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 36 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [文睿 李](https://appshunter.io/developer/372593992) | [SOS, Inc.](https://appshunter.io/developer/1658400757) |

## What reviewers say

### Color Board

[App page](https://appshunter.io/ios/app/color-board/id385456846)

This utility app allows users to create vibrant color boards and display large, customizable text on their iPhone and iPad. It's ideal for presentations, events, or making bold statements with adjustable colors, backgrounds, and text effects.

**Highlights:** Create pure color boards, Display big, customizable text, Choose background and text colors, Twinkle mode for flashing effects, Adjustable font size and speed

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Mobile SOS

[App page](https://appshunter.io/ios/app/mobile-sos/id1658400755)

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

**In-app purchases:** none


## Frequently asked questions

### Is Color Board free?

Color Board is free to download, with in-app purchases available.

### Is Mobile SOS free?

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

### Do Color Board or Mobile SOS have ads?

Color Board shows ads; Mobile SOS does not.

### Which is updated more often, Color Board or Mobile SOS?

Color Board ships an update every 2 months, and Mobile SOS every 44 months. Most recently, Color Board was updated on November 1, 2026 and Mobile SOS on October 25, 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.*