# Color Board vs 昭和レトロ電卓

The clearest difference is in-app purchases: 昭和レトロ電卓 at none against Color Board's 1. 昭和レトロ電卓 also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.6). Color Board's advantage is update cadence (every 2 months vs every 5 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. 昭和レトロ電卓 asks for nothing beyond the download.

Color Board ships an update every 2 months, 昭和レトロ電卓 every 5 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Color Board | 昭和レトロ電卓 |
| --- | --- | --- |
| 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 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 28 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [文睿 李](https://appshunter.io/developer/372593992) | [Masaki Takahashi](https://appshunter.io/developer/1860849926) |

## 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 |


### 昭和レトロ電卓

[App page](https://appshunter.io/ios/app/vfd/id6756614175)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Color Board free?

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

### Is 昭和レトロ電卓 free?

昭和レトロ電卓 is free to download, with no in-app purchases.

### Do Color Board or 昭和レトロ電卓 have ads?

Color Board shows ads; 昭和レトロ電卓 does not.

### Which is updated more often, Color Board or 昭和レトロ電卓?

Color Board ships an update every 2 months, and 昭和レトロ電卓 every 5 months. Most recently, Color Board was updated on October 24, 2026 and 昭和レトロ電卓 on October 20, 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.*