# 洞察Todo vs Inker

The clearest difference is in-app purchases: 洞察Todo at none against Inker's 4. 洞察Todo also leads on iOS requirement (17.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Inker sells 4 in-app purchases, starting at $0.99 per 7 days. 洞察Todo asks for nothing beyond the download.

## The numbers

| Metric | 洞察Todo | Inker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/inker-for-calligraphy-lovers/id6758495623/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 6 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [永宏 李](https://appshunter.io/developer/1870878980) | [Guangdong Jiatai Thermal Technology Co.,Ltd](https://appshunter.io/developer/1873182984) |

## What reviewers say

### 洞察Todo

[App page](https://appshunter.io/ios/app/todo/id6758132380)

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

**In-app purchases:** none


### Inker

[App page](https://appshunter.io/ios/app/inker-for-calligraphy-lovers/id6758495623)

Refine your English handwriting and calligraphy skills with guided practice and customizable templates. Create unique greeting cards and even generate your own personalized handwritten font for various applications.

**Highlights:** Scenario-based practice sheets, Premium greeting card templates, Import/export TTF/OTF fonts, Learn calligraphy history and theory, Immersive writing experience with Apple Pencil, Generate personal TTF handwritten font

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Quarterly | $5.99 | per 3 months |
| Yearly | $12.99 | per year |
| Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is 洞察Todo free?

洞察Todo is free to download, with no in-app purchases.

### Is Inker free?

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

### Do 洞察Todo or Inker have ads?

Neither 洞察Todo nor Inker shows ads.

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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.*