# Innkeeper vs Idemitsu Smart OC

The clearest difference is in-app purchases: Idemitsu Smart OC at none against Innkeeper's 3. Idemitsu Smart OC also leads on iOS requirement (18.6 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Innkeeper sells 3 in-app purchases, starting at $14.99 per month. Idemitsu Smart OC asks for nothing beyond the download.

## The numbers

| Metric | Innkeeper | Idemitsu Smart OC |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Free |
| Size | 16 MB | 15 MB |
| Requires iOS | 26.2 | **18.6** |
| Devices | **iPhone, Apple TV** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [David Reeves](https://appshunter.io/developer/1559400434) | [Idemitsu Kosan Co.,Ltd.](https://appshunter.io/developer/1434377868) |

## What reviewers say

### Innkeeper

[App page](https://appshunter.io/ios/app/innkeeper-guest-experiences/id1602111934)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Innkeeper Monthly | $14.99 | per month |
| Innkeeper Quarterly | $39.99 | per 3 months |
| Innkeeper Yearly | $139.99 | per year |


### 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 Innkeeper free?

Innkeeper 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 Innkeeper or Idemitsu Smart OC have ads?

Neither Innkeeper nor Idemitsu Smart OC shows ads.

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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.*