# R vs たどる君MultiViewer Mobile

The clearest difference is ads: R at none against たどる君MultiViewer Mobile's shown. たどる君MultiViewer Mobile's advantage is update cadence (every 9 days vs every 32 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

R ships an update every 32 months, たどる君MultiViewer Mobile every 9 days. The most recent releases landed on October 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | R | たどる君MultiViewer Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 32 months | **Every 9 days** |
| Size | 21 MB | 35 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [REIMEI COMPUTER CO.,LTD.](https://appshunter.io/developer/1497663416) | [I THINK, LTD.](https://appshunter.io/developer/1613266391) |

## What reviewers say

### R

[App page](https://appshunter.io/ios/app/r-scanner/id1570759172)

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

**In-app purchases:** none


### たどる君MultiViewer Mobile

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

**In-app purchases:** none


## Frequently asked questions

### Is R free?

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

### Is たどる君MultiViewer Mobile free?

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

### Do R or たどる君MultiViewer Mobile have ads?

たどる君MultiViewer Mobile shows ads; R does not.

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

R ships an update every 32 months, and たどる君MultiViewer Mobile every 9 days. Most recently, R was updated on October 1, 2026 and たどる君MultiViewer Mobile on November 3, 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.*