# API 653 Highlights and Exams vs API Inspector Cert Prep

The clearest difference is in-app purchases: API 653 Highlights and Exams at none against API Inspector Cert Prep's 3. API 653 Highlights and Exams also leads on iOS requirement (9.1 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. API Inspector Cert Prep sells 3 one-off in-app purchases. API 653 Highlights and Exams asks for nothing beyond the download.

## The numbers

| Metric | API 653 Highlights and Exams | API Inspector Cert Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/api-653-highlights-and-exams/id1440414935/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | Free | — |
| Size | 16 MB | 32 MB |
| Requires iOS | **9.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Hieu](https://appshunter.io/developer/1323491316) | [Simon Shih](https://appshunter.io/developer/1870707682) |

## What reviewers say

### API 653 Highlights and Exams

[App page](https://appshunter.io/ios/app/api-653-highlights-and-exams/id1440414935)

Prepare for your API 653 Aboveground Storage Tank Inspector certification exam with this offline study and practice app. The free version offers a glimpse with 15 practice and 15 exam questions, while the full version provides over 1700 questions covering all exam sections.

**Highlights:** Offline exam preparation, Practice testing questions, Full exam version with 1700+ questions, Covers all examination sections, Free version available

**Features:** macOS Compatibility

**In-app purchases:** none


### API Inspector Cert Prep

[App page](https://appshunter.io/ios/app/api-inspector-cert-prep/id6785875538)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| API 510 – Pressure Vessel Inspector | $19.99 | one-time |
| API 570 – Piping Inspector | $19.99 | one-time |
| API 653 – Storage Tank Inspector | $19.99 | one-time |


## Frequently asked questions

### Is API 653 Highlights and Exams free?

API 653 Highlights and Exams is free to download, with no in-app purchases.

### Is API Inspector Cert Prep free?

API Inspector Cert Prep is free to download, with in-app purchases available.

### Do API 653 Highlights and Exams or API Inspector Cert Prep have ads?

Neither API 653 Highlights and Exams nor API Inspector Cert Prep 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.*