# Gantts vs Obi

The clearest difference is device support: Obi at 2 against Gantts's —. Gantts's advantage is iOS requirement (13.0 vs 17.0). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Gantts | Obi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Size | 59 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yoshiyuki Fukabori](https://appshunter.io/developer/1865813548) | [Daisaku Seto](https://appshunter.io/developer/1889853807) |

## What reviewers say

### Gantts

[App page](https://appshunter.io/ios/app/gantts/id6757694629)

**In-app purchases:** none


### Obi

[App page](https://appshunter.io/ios/app/obi-yomi/id6780187534)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gantts free?

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

### Is Obi free?

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*