# do!book vs GanttVision

The clearest difference is update cadence: GanttVision at every 5 days against do!book's every 2 months. do!book's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

do!book ships an update every 2 months, GanttVision every 5 days. The most recent releases landed on October 26, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | do!book | GanttVision |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Size | 5 MB | 165 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Digital Office  Japan  Inc.](https://appshunter.io/developer/348581782) | [Kenichi Asai](https://appshunter.io/developer/1533979715) |

## What reviewers say

### do!book

[App page](https://appshunter.io/ios/app/dobook/id1459068800)

**Features:** macOS Compatibility

**In-app purchases:** none


### GanttVision

[App page](https://appshunter.io/ios/app/ganttvisionai/id6759361773)

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

**In-app purchases:** none


## Frequently asked questions

### Is do!book free?

do!book is free to download, with no in-app purchases.

### Is GanttVision free?

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

### Do do!book or GanttVision have ads?

Neither do!book nor GanttVision shows ads.

### Which is updated more often, do!book or GanttVision?

do!book ships an update every 2 months, and GanttVision every 5 days. Most recently, do!book was updated on October 26, 2026 and GanttVision on October 12, 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.*