# CPM vs Building X Access

The clearest difference is update cadence: CPM at every 4 days against Building X Access's every 4 weeks. CPM also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CPM ships an update every 4 days, Building X Access every 4 weeks. The most recent releases landed on September 7, 2026 and July 9, 2026 respectively.

## The numbers

| Metric | CPM | Building X Access |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/cpm-app/id1076636609/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 64.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 4 weeks |
| Monetization | Free | — |
| Size | 108 MB | 22 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Car Professional Fuhrparkmanagement und](https://appshunter.io/developer/1076636608) | [Siemens AG](https://appshunter.io/developer/394503271) |

## What reviewers say

### CPM

[App page](https://appshunter.io/ios/app/cpm-app/id1076636609)

Manage your rented vehicles on the go with this app. Access vehicle data, find service partners, and handle accident procedures. Submit documents, track activities, and report expenses and mileage easily.

**Highlights:** Vehicle data overview, Service partner navigation, Accident first aid information, Document transmission, Activity timeline, Expense reimbursement, Mileage reporting

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

**In-app purchases:** none


### Building X Access

[App page](https://appshunter.io/ios/app/building-x-access/id1483078094)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is CPM free?

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

### Is Building X Access free?

Building X Access is free to download, with no in-app purchases.

### Do CPM or Building X Access have ads?

Neither CPM nor Building X Access shows ads.

### Which is updated more often, CPM or Building X Access?

CPM ships an update every 4 days, and Building X Access every 4 weeks. Most recently, CPM was updated on September 7, 2026 and Building X Access on July 9, 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.*