# CDL Prep A+ vs Boiler Fault Finding

The clearest difference is ads: CDL Prep A+ at none against Boiler Fault Finding's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. CDL Prep A+ sells 2 in-app purchases, starting at $8.99 per month and Boiler Fault Finding sells 2 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

CDL Prep A+ ships an update every 5 weeks, Boiler Fault Finding every 2 months. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CDL Prep A+ | Boiler Fault Finding |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Size | 13 MB | 9 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [Abdul Basit](https://appshunter.io/developer/1829270614) |

## What reviewers say

### CDL Prep A+

[App page](https://appshunter.io/ios/app/cdl-prep-a-plus/id6736498207)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $8.99 | per month |
| Lifetime version | $14.99 | one-time |


### Boiler Fault Finding

[App page](https://appshunter.io/ios/app/boiler-fault-finding/id6758863272)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $1.99 | per 7 days |
| Monthly Access | $6.99 | per month |


## Frequently asked questions

### Is CDL Prep A+ free?

CDL Prep A+ is free to download, with in-app purchases available.

### Is Boiler Fault Finding free?

Boiler Fault Finding is free to download, with in-app purchases available.

### Do CDL Prep A+ or Boiler Fault Finding have ads?

Boiler Fault Finding shows ads; CDL Prep A+ does not.

### Which is updated more often, CDL Prep A+ or Boiler Fault Finding?

CDL Prep A+ ships an update every 5 weeks, and Boiler Fault Finding every 2 months. Most recently, CDL Prep A+ was updated on October 25, 2026 and Boiler Fault Finding on October 31, 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.*