# DataStructureAndAlgorithm vs Firefighter I & II Exam Prep ・

The clearest difference is price: Firefighter I & II Exam Prep ・ at Free against DataStructureAndAlgorithm's $7.99. DataStructureAndAlgorithm's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Firefighter I & II Exam Prep ・ is free to download; DataStructureAndAlgorithm costs $7.99 up front. Firefighter I & II Exam Prep ・ sells 3 in-app purchases, starting at $8.99 per 7 days. DataStructureAndAlgorithm asks for nothing beyond the download.

## The numbers

| Metric | DataStructureAndAlgorithm | Firefighter I & II Exam Prep ・ |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | — |
| Size | 12 MB | 31 MB |
| Requires iOS | 16.3 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Buydeepdiscount.com LLC](https://appshunter.io/developer/817177888) | [Avirtek LLC](https://appshunter.io/developer/1487462549) |

## What reviewers say

### DataStructureAndAlgorithm

[App page](https://appshunter.io/ios/app/datastructureandalgorithm/id6503237307)

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

**In-app purchases:** none


### Firefighter I & II Exam Prep ・

[App page](https://appshunter.io/ios/app/firefighter-i-and-ii-exam-prep/id6753870704)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $8.99 | per 7 days |
| Premium Subscription | $8.99 | per 7 days |
| Premium Subscription | $124.99 | per year |


## Frequently asked questions

### Is DataStructureAndAlgorithm free?

DataStructureAndAlgorithm costs $7.99, with no in-app purchases.

### Is Firefighter I & II Exam Prep ・ free?

Firefighter I & II Exam Prep ・ is free to download, with in-app purchases available.

### Do DataStructureAndAlgorithm or Firefighter I & II Exam Prep ・ have ads?

Firefighter I & II Exam Prep ・ shows ads; DataStructureAndAlgorithm does not.

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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.*