# Certification Prep Pro vs OCI Knowledge Test

The clearest difference is in-app purchases: Certification Prep Pro at none against OCI Knowledge Test's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OCI Knowledge Test sells 2 in-app purchases, starting at $11.99 per month. Certification Prep Pro asks for nothing beyond the download.

## The numbers

| Metric | Certification Prep Pro | OCI Knowledge Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 17 MB | 9 MB |
| Requires iOS | 17.5 | **17.2** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Coffeedevs LLC](https://appshunter.io/developer/1793357959) | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) |

## What reviewers say

### Certification Prep Pro

[App page](https://appshunter.io/ios/app/certification-prep-pro/id6741158449)

**Features:** macOS Compatibility

**In-app purchases:** none


### OCI Knowledge Test

[App page](https://appshunter.io/ios/app/oci-knowledge-test/id6741455232)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $11.99 | per month |
| Lifetime version | $24.99 | one-time |


## Frequently asked questions

### Is Certification Prep Pro free?

Certification Prep Pro is free to download, with no in-app purchases.

### Is OCI Knowledge Test free?

OCI Knowledge Test is free to download, with in-app purchases available.

### Do Certification Prep Pro or OCI Knowledge Test have ads?

Neither Certification Prep Pro nor OCI Knowledge Test 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.*