# GanttVision vs JWW見れる君

The clearest difference is in-app purchases: GanttVision at none against JWW見れる君's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. JWW見れる君 sells 2 in-app purchases, starting at $2.99 per month. GanttVision asks for nothing beyond the download.

GanttVision ships an update every 5 days, JWW見れる君 every 4 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | GanttVision | JWW見れる君 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Size | 165 MB | 6 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kenichi Asai](https://appshunter.io/developer/1533979715) | [Akira Yamatani](https://appshunter.io/developer/6792604209) |

## What reviewers say

### GanttVision

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

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

**In-app purchases:** none


### JWW見れる君

[App page](https://appshunter.io/ios/app/jww/id6792604207)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JWW見れる君 Pro（月額） | $2.99 | per month |
| Pro（買い切り） | $29.99 | one-time |


## Frequently asked questions

### Is GanttVision free?

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

### Is JWW見れる君 free?

JWW見れる君 is free to download, with in-app purchases available.

### Do GanttVision or JWW見れる君 have ads?

Neither GanttVision nor JWW見れる君 shows ads.

### Which is updated more often, GanttVision or JWW見れる君?

GanttVision ships an update every 5 days, and JWW見れる君 every 4 days. Most recently, GanttVision was updated on October 31, 2026 and JWW見れる君 on November 6, 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.*