# 角度計犬 vs iGanttChart

The clearest difference is price: iGanttChart at Free against 角度計犬's $1.99. iGanttChart also leads on update cadence (every 2 weeks vs every 4 months) and device support (4 vs 2). 角度計犬's advantage is in-app purchases (none vs 2). On ads and iOS requirement there is nothing between them.

iGanttChart is free to download; 角度計犬 costs $1.99 up front. iGanttChart sells 2 in-app purchases, starting at $2.99 per month. 角度計犬 asks for nothing beyond the download.

角度計犬 ships an update every 4 months, iGanttChart every 2 weeks. The most recent releases landed on November 6, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | 角度計犬 | iGanttChart |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.0 (23 ratings)](https://appshunter.io/ios/app/iganttchart-gantt-chart-app/id1665357828/reviews)** |
| Number of ratings | — | **23** |
| Positive reviews | — | 65.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 6 MB | 51 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Tetsuya Morikawa](https://appshunter.io/developer/728393868) | [YUKI TANAIKE](https://appshunter.io/developer/478558546) |

## What reviewers say

### 角度計犬

[App page](https://appshunter.io/ios/app/id765014964)

**In-app purchases:** none


### iGanttChart

[App page](https://appshunter.io/ios/app/iganttchart-gantt-chart-app/id1665357828)

Create and manage project timelines with ease using this intuitive mobile application. Features include task progress tracking, color-coding, links, and assignee management. Seamlessly sync across devices and export your charts for further editing.

**Highlights:** Intuitive usability, Task progress management, Color-coded tasks, Link insertion, Assignee management, Multi-device sync, Export and share charts

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iGanttChart Pro Version Monthly | $2.99 | per month |
| iGanttChart Pro Version Annual | $27.00 | per year |


## Frequently asked questions

### Is 角度計犬 free?

角度計犬 costs $1.99, with no in-app purchases.

### Is iGanttChart free?

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

### Do 角度計犬 or iGanttChart have ads?

Neither 角度計犬 nor iGanttChart shows ads.

### Which is updated more often, 角度計犬 or iGanttChart?

角度計犬 ships an update every 4 months, and iGanttChart every 2 weeks. Most recently, 角度計犬 was updated on November 6, 2026 and iGanttChart on November 11, 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.*