# Learn SQLite Database vs API Inspector Cert Prep

The clearest difference is price: API Inspector Cert Prep at Free against Learn SQLite Database's $1.99. API Inspector Cert Prep also leads on update cadence (every 3 months vs every 20 months). Learn SQLite Database's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 15.1). On ads and device support there is nothing between them.

API Inspector Cert Prep is free to download; Learn SQLite Database costs $1.99 up front. API Inspector Cert Prep sells 3 one-off in-app purchases. Learn SQLite Database asks for nothing beyond the download.

Learn SQLite Database ships an update every 20 months, API Inspector Cert Prep every 3 months. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Learn SQLite Database | API Inspector Cert Prep |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 3 months** |
| Size | 39 MB | 32 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) | [Simon Shih](https://appshunter.io/developer/1870707682) |

## What reviewers say

### Learn SQLite Database

[App page](https://appshunter.io/ios/app/learn-sqlite-database/id6738282300)

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

**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 Learn SQLite Database free?

Learn SQLite Database costs $1.99, 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 Learn SQLite Database or API Inspector Cert Prep have ads?

Neither Learn SQLite Database nor API Inspector Cert Prep shows ads.

### Which is updated more often, Learn SQLite Database or API Inspector Cert Prep?

Learn SQLite Database ships an update every 20 months, and API Inspector Cert Prep every 3 months. Most recently, Learn SQLite Database was updated on October 4, 2026 and API Inspector Cert Prep on October 2, 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.*