# たどる君MultiViewer Mobile vs Formation App

The clearest difference is in-app purchases: たどる君MultiViewer Mobile at none against Formation App's 1. Formation App's advantage is ads (none vs shown) and update cadence (every 2 days vs every 9 days). On price and iOS requirement there is nothing between them.

Both are free to download. Formation App sells 1 one-off in-app purchase. たどる君MultiViewer Mobile asks for nothing beyond the download.

たどる君MultiViewer Mobile ships an update every 9 days, Formation App every 2 days. The most recent releases landed on September 18, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | たどる君MultiViewer Mobile | Formation App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 2 days** |
| Size | 35 MB | 28 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [I THINK, LTD.](https://appshunter.io/developer/1613266391) | [Ryo Nakazono](https://appshunter.io/developer/6773152513) |

## What reviewers say

### たどる君MultiViewer Mobile

[App page](https://appshunter.io/ios/app/multiviewer-mobile/id1613266389)

**In-app purchases:** none


### Formation App

[App page](https://appshunter.io/ios/app/formation-app/id6773152511)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |


## Frequently asked questions

### Is たどる君MultiViewer Mobile free?

たどる君MultiViewer Mobile is free to download, with no in-app purchases.

### Is Formation App free?

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

### Do たどる君MultiViewer Mobile or Formation App have ads?

たどる君MultiViewer Mobile shows ads; Formation App does not.

### Which is updated more often, たどる君MultiViewer Mobile or Formation App?

たどる君MultiViewer Mobile ships an update every 9 days, and Formation App every 2 days. Most recently, たどる君MultiViewer Mobile was updated on September 18, 2026 and Formation App on September 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.*