# tenki.jp 登山天気 日本気象協会公式 山の天気予報 vs rainfo

The clearest difference is in-app purchases: rainfo at none against tenki.jp 登山天気 日本気象協会公式 山の天気予報's 3. rainfo also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (14.0 vs 16.0). tenki.jp 登山天気 日本気象協会公式 山の天気予報's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. tenki.jp 登山天気 日本気象協会公式 山の天気予報 sells 3 in-app purchases, starting at $1.99 per month. rainfo asks for nothing beyond the download.

tenki.jp 登山天気 日本気象協会公式 山の天気予報 ships an update every 2 weeks, rainfo every 5 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | tenki.jp 登山天気 日本気象協会公式 山の天気予報 | rainfo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/tenkijp/id1144845642/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 35.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 74 MB | 55 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [一般財団法人 日本気象協会](https://appshunter.io/developer/433865749) | [SANGBEOM PARK](https://appshunter.io/developer/1796086696) |

## What reviewers say

### tenki.jp 登山天気 日本気象協会公式 山の天気予報

[App page](https://appshunter.io/ios/app/tenkijp/id1144845642)

Get detailed, altitude-specific weather forecasts for mountains across Japan. Plan your hikes with confidence using precise temperature, precipitation, and wind predictions. Stay safe with real-time condition updates and expert-監修 meteorological data.

**Highlights:** Altitude-specific mountain weather forecasts, 14-day weather outlook (premium), Hourly weather updates (premium), Seasonal features like snow maps, Mountain condition summaries, Recommended clothing index, Upper-air weather charts

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 定期購読 | $1.99 | per month |
| 定期購読 | $3.99 | per month |
| 定期購読 | $34.99 | per year |


### rainfo

[App page](https://appshunter.io/ios/app/rainfo/id6741888073)

**In-app purchases:** none


## Frequently asked questions

### Is tenki.jp 登山天気 日本気象協会公式 山の天気予報 free?

tenki.jp 登山天気 日本気象協会公式 山の天気予報 is free to download, with in-app purchases available.

### Is rainfo free?

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

### Do tenki.jp 登山天気 日本気象協会公式 山の天気予報 or rainfo have ads?

rainfo shows ads; tenki.jp 登山天気 日本気象協会公式 山の天気予報 does not.

### Which is updated more often, tenki.jp 登山天気 日本気象協会公式 山の天気予報 or rainfo?

tenki.jp 登山天気 日本気象協会公式 山の天気予報 ships an update every 2 weeks, and rainfo every 5 days. Most recently, tenki.jp 登山天気 日本気象協会公式 山の天気予報 was updated on October 24, 2026 and rainfo on October 8, 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.*