# レーダー地図 vs Tanka Note

The clearest difference is in-app purchases: レーダー地図 at none against Tanka Note's 1. レーダー地図 also leads on ads (none vs shown). Tanka Note's advantage is update cadence (every 6 weeks vs every 30 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Tanka Note sells 1 one-off in-app purchase. レーダー地図 asks for nothing beyond the download.

レーダー地図 ships an update every 30 months, Tanka Note every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | レーダー地図 | Tanka Note |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 30 months | **Every 6 weeks** |
| Size | 6 MB | 8 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yoshiyuki Koyanagi](https://appshunter.io/developer/1540530354) | [Mihoko Araki](https://appshunter.io/developer/1476136915) |

## What reviewers say

### レーダー地図

[App page](https://appshunter.io/ios/app/id1552097407)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tanka Note

[App page](https://appshunter.io/ios/app/tanka-note/id1618629883)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |


## Frequently asked questions

### Is レーダー地図 free?

レーダー地図 is free to download, with no in-app purchases.

### Is Tanka Note free?

Tanka Note is free to download, with in-app purchases available.

### Do レーダー地図 or Tanka Note have ads?

Tanka Note shows ads; レーダー地図 does not.

### Which is updated more often, レーダー地図 or Tanka Note?

レーダー地図 ships an update every 30 months, and Tanka Note every 6 weeks. Most recently, レーダー地図 was updated on November 3, 2026 and Tanka Note on November 3, 2026.

---

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