# CPU Rank vs Voltage

The clearest difference is price: Voltage at Free against CPU Rank's $0.99. CPU Rank's advantage is in-app purchases (none vs 5) and device support (3 vs 1). On ads there is nothing between them.

Voltage is free to download; CPU Rank costs $0.99 up front. Voltage sells 5 one-off in-app purchases. CPU Rank asks for nothing beyond the download.

## The numbers

| Metric | CPU Rank | Voltage |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/voltage-volt-ampera-bolt-obd/id6774315064/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Monetization | — | Free |
| Size | 18 MB | 54 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [立娜 王](https://appshunter.io/developer/1761096632) | [Oleksandr Radchenko](https://appshunter.io/developer/6774315066) |

## What reviewers say

### CPU Rank

[App page](https://appshunter.io/ios/app/cpu-rank-processor-benchmark/id6772950476)

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

**In-app purchases:** none


### Voltage

[App page](https://appshunter.io/ios/app/voltage-volt-ampera-bolt-obd/id6774315064)

This app provides comprehensive diagnostic and control features for specific GM electric and hybrid vehicles. It allows users to monitor various vehicle parameters, perform deep diagnostics, and even control certain functions remotely via an OBD2 adapter.

**Highlights:** Deep DTC scanning, Live parameter monitoring, Real-time battery analysis, HV Unlock function, Remote start and climate control, Charge management and scheduling, Module reset and clearing

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ELR / Volt Design activation | $4.99 | one-time |
| ELR / Volt Design activation | $9.99 | one-time |
| Traffic Signs Activation (discount) | $9.99 | one-time |
| Traffic Signs Activation | $19.99 | one-time |
| Premium upgrade | $24.99 | one-time |


## Frequently asked questions

### Is CPU Rank free?

CPU Rank costs $0.99, with no in-app purchases.

### Is Voltage free?

Voltage is free to download, with in-app purchases available.

### Do CPU Rank or Voltage have ads?

Neither CPU Rank nor Voltage 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.*