# 月刊ホテル旅館 vs Idemitsu Smart OC

The clearest difference is in-app purchases: Idemitsu Smart OC at none against 月刊ホテル旅館's 23. Idemitsu Smart OC also leads on update cadence (every 3 weeks vs every 10 months). 月刊ホテル旅館's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.6). On price and ads there is nothing between them.

Both are free to download. 月刊ホテル旅館 sells 23 in-app purchases, starting at $79.99 per year. Idemitsu Smart OC asks for nothing beyond the download.

月刊ホテル旅館 ships an update every 10 months, Idemitsu Smart OC every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 月刊ホテル旅館 | Idemitsu Smart OC |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 41 MB | 15 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SHIBATASHOTEN](https://appshunter.io/developer/433607567) | [Idemitsu Kosan Co.,Ltd.](https://appshunter.io/developer/1434377868) |

## What reviewers say

### 月刊ホテル旅館

[App page](https://appshunter.io/ios/app/id1093784830)

**Features:** Vision Pro support

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ホテル旅館定期購読 | $79.99 | per year |
| ホテル旅館2026年6･7月号 | $11.99 | one-time |
| ホテル旅館2026年2･3月号 | $11.99 | one-time |
| ホテル旅館2026年4･5月号 | $11.99 | one-time |
| ホテル旅館2025年12月･2026年1月号 | $11.99 | one-time |
| ホテル旅館2025年10･11月号 | $11.99 | one-time |
| ホテル旅館2025年08･09月号 | $11.99 | one-time |
| ホテル旅館2025年06･07月号 | $11.99 | one-time |
| ホテル旅館2025年04･05月号 | $11.99 | one-time |
| ホテル旅館2025年02･03月号 | $11.99 | one-time |
| ホテル旅館2023年11月号 | $11.99 | one-time |
| ホテル旅館2024年01月号 | $11.99 | one-time |
| ホテル旅館2024年02月号 | $11.99 | one-time |
| ホテル旅館2024年03月号 | $11.99 | one-time |
| ホテル旅館2024年04月号 | $11.99 | one-time |
| ホテル旅館2024年06月号 | $11.99 | one-time |
| ホテル旅館2024年10･11月号 | $11.99 | one-time |
| ホテル旅館2024年12･01月号 | $11.99 | one-time |
| ホテル旅館2024年08･09月号 | $11.99 | one-time |
| ホテル旅館2023年12月号 | $12.99 | one-time |
| ホテル旅館2023年10月号 | $12.99 | one-time |
| ホテル旅館2024年05月号 | $12.99 | one-time |
| ホテル旅館2023年09月号 | $12.99 | one-time |


### Idemitsu Smart OC

[App page](https://appshunter.io/ios/app/idemitsu-smart-oc/id6736635041)

This app enables on-site lubricant analysis using a smartphone camera. It assesses lubricant degradation and contamination by analyzing photos, providing numerical data to help detect anomalies and ensure stable machinery operation.

**Highlights:** On-site lubricant diagnosis, Photo-based analysis, Degradation status assessment, Contamination level calculation, Historical data access, Early anomaly detection

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

**In-app purchases:** none


## Frequently asked questions

### Is 月刊ホテル旅館 free?

月刊ホテル旅館 is free to download, with in-app purchases available.

### Is Idemitsu Smart OC free?

Idemitsu Smart OC is free to download, with no in-app purchases.

### Do 月刊ホテル旅館 or Idemitsu Smart OC have ads?

Neither 月刊ホテル旅館 nor Idemitsu Smart OC shows ads.

### Which is updated more often, 月刊ホテル旅館 or Idemitsu Smart OC?

月刊ホテル旅館 ships an update every 10 months, and Idemitsu Smart OC every 3 weeks. Most recently, 月刊ホテル旅館 was updated on October 26, 2026 and Idemitsu Smart OC on October 24, 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.*