# カラライズ・白黒写真カラー化(Colorize) vs 印鑑画像作成ツール byNSDev

The clearest difference is in-app purchases: 印鑑画像作成ツール byNSDev at none against カラライズ・白黒写真カラー化(Colorize)'s 1. 印鑑画像作成ツール byNSDev also leads on ads (none vs shown). カラライズ・白黒写真カラー化(Colorize)'s advantage is update cadence (every 5 days vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. カラライズ・白黒写真カラー化(Colorize) sells 1 one-off in-app purchase. 印鑑画像作成ツール byNSDev asks for nothing beyond the download.

カラライズ・白黒写真カラー化(Colorize) ships an update every 5 days, 印鑑画像作成ツール byNSDev fortnightly. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | カラライズ・白黒写真カラー化(Colorize) | 印鑑画像作成ツール byNSDev |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/colorize/id6449988339/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 141 MB | 6 MB |
| Requires iOS | **16.0** | 17 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Tomohiro Ohwada](https://appshunter.io/developer/991660409) | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) |

## What reviewers say

### カラライズ・白黒写真カラー化(Colorize)

[App page](https://appshunter.io/ios/app/colorize/id6449988339)

Transform black and white photos into color and enhance image quality. This app processes images offline, ensuring your data remains private. While processing may take some time, it eliminates the need for server uploads.

**Highlights:** Colorize black and white photos, Enhance image resolution, Offline processing, Private data handling, High-quality results

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 開発応援 | $1.99 | one-time |


### 印鑑画像作成ツール byNSDev

[App page](https://appshunter.io/ios/app/bynsdev/id6748853247)

Easily create custom seal images by inputting text. Adjust various aspects like shape, borders, and colors to generate unique designs. Supports system and custom fonts for personalized seals.

**Highlights:** Create round, oval, square, and rectangular seals, Adjustable border thickness, Mirror text option, Customizable text and background colors, Support for system and custom fonts (TTF, OTF), Adjustable character spacing

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

**In-app purchases:** none


## Frequently asked questions

### Is カラライズ・白黒写真カラー化(Colorize) free?

カラライズ・白黒写真カラー化(Colorize) is free to download, with in-app purchases available.

### Is 印鑑画像作成ツール byNSDev free?

印鑑画像作成ツール byNSDev is free to download, with no in-app purchases.

### Do カラライズ・白黒写真カラー化(Colorize) or 印鑑画像作成ツール byNSDev have ads?

カラライズ・白黒写真カラー化(Colorize) shows ads; 印鑑画像作成ツール byNSDev does not.

### Which is updated more often, カラライズ・白黒写真カラー化(Colorize) or 印鑑画像作成ツール byNSDev?

カラライズ・白黒写真カラー化(Colorize) ships an update every 5 days, and 印鑑画像作成ツール byNSDev fortnightly. Most recently, カラライズ・白黒写真カラー化(Colorize) was updated on October 13, 2026 and 印鑑画像作成ツール byNSDev on October 4, 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.*