# CDL Tanker Test vs CDL Doubles Triples Prep

The clearest difference is update cadence: CDL Doubles Triples Prep at every 8 days against CDL Tanker Test's every 3 weeks. CDL Doubles Triples Prep also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. CDL Tanker Test sells 2 in-app purchases, starting at $4.99 per month and CDL Doubles Triples Prep sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

CDL Tanker Test ships an update every 3 weeks, CDL Doubles Triples Prep every 8 days. Both last shipped on September 21, 2026.

## The numbers

| Metric | CDL Tanker Test | CDL Doubles Triples Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cdl-tanker-test/id6664060295/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Subscription | — |
| Size | 9 MB | 25 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [fly sky pty ltd](https://appshunter.io/developer/1838696534) |

## What reviewers say

### CDL Tanker Test

[App page](https://appshunter.io/ios/app/cdl-tanker-test/id6664060295)

Prepare for your CDL Tanker endorsement exam with a comprehensive study tool. It offers a large question bank with detailed explanations, progress tracking, and custom practice tests to help you master the material and pass on your first attempt.

**Highlights:** Extensive question bank, Detailed explanations, Progress tracking, Custom practice tests, Study efficiently

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $4.99 | per month |
| Lifetime version | $12.99 | one-time |


### CDL Doubles Triples Prep

[App page](https://appshunter.io/ios/app/cdl-doubles-triples-prep/id6776425892)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CDL Doubles/Triples Full Acces | $4.99 | per 7 days |
| CDL Doubles/Triples Full Acces | $12.99 | per month |
| Unlock Full Question Bank | $4.99 | one-time |
| CDL Doubles/Triples Full Acces | $39.99 | one-time |


## Frequently asked questions

### Is CDL Tanker Test free?

CDL Tanker Test is free to download, with in-app purchases available.

### Is CDL Doubles Triples Prep free?

CDL Doubles Triples Prep is free to download, with in-app purchases available.

### Do CDL Tanker Test or CDL Doubles Triples Prep have ads?

Neither CDL Tanker Test nor CDL Doubles Triples Prep shows ads.

### Which is updated more often, CDL Tanker Test or CDL Doubles Triples Prep?

CDL Tanker Test ships an update every 3 weeks, and CDL Doubles Triples Prep every 8 days. Most recently, CDL Tanker Test was updated on September 21, 2026 and CDL Doubles Triples Prep on September 21, 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.*