# TACHI vs うどんナビ

The clearest difference is in-app purchases: TACHI at none against うどんナビ's 2. TACHI also leads on device support (3 vs 1) and iOS requirement (15.0.0 vs 26.0). On price, update cadence and ads there is nothing between them.

Both are free to download. うどんナビ sells 2 in-app purchases, starting at $1.99 per month. TACHI asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TACHI | うどんナビ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Size | 51 MB | 9 MB |
| Requires iOS | **15.0.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [SHINKINGUFO-, K.K.](https://appshunter.io/developer/1490815403) | [Kosei Morikawa](https://appshunter.io/developer/1896334433) |

## What reviewers say

### TACHI

[App page](https://appshunter.io/ios/app/tachi-map/id6737535664)

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

**In-app purchases:** none


### うどんナビ

[App page](https://appshunter.io/ios/app/id6766887416)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Udon Navi Premium (Monthly) | $1.99 | per month |
| Udon Navi Premium (Yearly) | $24.99 | per year |


## Frequently asked questions

### Is TACHI free?

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

### Is うどんナビ free?

うどんナビ is free to download, with in-app purchases available.

### Do TACHI or うどんナビ have ads?

Neither TACHI nor うどんナビ shows ads.

### Which is updated more often, TACHI or うどんナビ?

TACHI ships an update every 3 days, and うどんナビ every 3 days. Most recently, TACHI was updated on October 30, 2026 and うどんナビ on October 31, 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.*